From April 7th 12:00:00 UTC until April 22nd 12:00:00 UTC we will be having a 15 day challenge running the Prime Sierpinski Problem (LLR) Project.

More information coming soon!

Until then, here's the link to the completed January 2017 challenge:

Isaac Newton's Birthday Challenge
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Are you ready to resume challenges yet? It doesn't look like the TRP sieve stuff will be over by then.
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Are you ready to resume challenges yet? It doesn't look like the TRP sieve stuff will be over by then.

What about ppl who are trying to get their next TRP-sieve badge and want to run the challenge also? I thought you guys said you would never run 2 or more challenges/big events (the run down to the suspension of TRP seems like a big thing) at the same time. I'm cutting it close already and if I don' make by the April 7th and TRP is still running what are we (crunchers) suppose to do? Choose?

I thinking this is a BAD decision. We should hold off challenges until TRP-sieve is finished like was said weeks ago



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Largest Primes to Date:
As Double Checker: SR5 109208*5^1816285+1 Dgts-1,269,534
As Initial Finder: SR5 243944*5^1258576-1 Dgts-879,713

What about ppl who are trying to get their next TRP-sieve badge and want to run the challenge also? I thought you guys said you would never run 2 or more challenges/big events (the run down to the suspension of TRP seems like a big thing) at the same time. I'm cutting it close already and if I don' make by the April 7th and TRP is still running what are we (crunchers) suppose to do? Choose?

I thinking this is a BAD decision. We should hold off challenges until TRP-sieve is finished like was said weeks ago

Welcome to Mathematics Awareness Month Challenge

The second Challenge of the 2017 Challenge series is a 15 day challenge to celebrate Mathematics and Statistics Awareness Month. The challenge is being offered on the Prime Sierpinski Problem (LLR) application. Come join us and also help in the PSP Double Check effort, at last count 40% complete. Currently work on this project is automatically part of the DC effort.

Each April 55,000 mathematicians and scientists celebrate Mathematics and Statistics Awareness Month to increase public understanding and appreciation for mathematics and statistics. The month's theme is to celebrate mathematics and statistics and the diverse researchers and students in these fields who are contributing so much to furthering discoveries, solving problems, and finding beauty in our world. The event was renamed from Mathematics Awareness Month by the Joint Policy Board for Mathematics (JPBM) in 2017.

College, University and high school departments, institutional public information offices, math clubs, student groups, related associations and interest groups are urged to organize and host activities in April for Mathematics and Statistics Awareness Month. Past activities have included workshops, competitions, exhibits, festivals, lectures, symposia, department open houses, math art exhibits, and math poetry readings. Some years, elected officials have issued proclamations, frequently in connection with special meetings and events arranged to observe the month.

To participate in the Challenge, please select only the Prime Sierpinski Problem (LLR) project in your PrimeGrid preferences section. The challenge will begin 7th April 2017 12:00 UTC and end 22nd April 2017 12:00 UTC.
Application builds are available for the following:

• Microsoft Windows (98 or later) running on an Intel x86-compatible CPU 8.00
  
• Microsoft Windows running on an AMD x86_64 or Intel EM64T CPU 8.00
  
• Linux running on an Intel x86-compatible CPU 8.00
  
• Linux running on an AMD x86_64 or Intel EM64T CPU 8.00
  
• Mac OS 10.5+ running on an Intel 64-bit CPU 8.00
  

Intel CPU's with AVX capabilities will be significantly faster than the ones without (including all AMD CPUs), as this instruction set allows for more computing power.

ATTENTION: The primality program LLR is CPU intensive; so, it is vital to have a stable system with good cooling. It does not tolerate "even the slightest of errors." Please see this post for more details on how you can "stress test" your computer. WU's may take around 12 hours on the fastest/newest computers and several days on slower/older computers. Multithreading can be used to speed up the execution time, at the expense of running fewer tasks simultaneously. See this thread for more information about multithreading. If your computer is highly overclocked, please consider "stress testing" it. Sieving is an excellent alternative for computers that are not able to LLR. :)

Highly overclocked Skylake and Kabylake (i.e., Intel Core i7, i5, and i3 -6xxx or better) computers running the application will see fastest times. It's faster than the previous LLR app and draws more power and produces more heat. If you have a Skylake or Kabylake CPU, especially if it's overclocked or has overclocked memory, and haven't run the new FMA3 LLR before, we strongly suggest running it before the challenge while you are monitoring the temperatures.

Please, please, please make sure your machines are up to the task.

Time zone converter:

The World Clock - Time Zone Converter

NOTE: The countdown clock on the front page uses the host computer time. Therefore, if your computer time is off, so will the countdown clock. For precise timing, use the UTC Time in the data section to the left of the countdown clock.

Scoring Information

Scores will be kept for individuals and teams. Only work units issued AFTER 7th April 2017 12:00 UTC and received BEFORE 22nd April 2017 12:00 UTC will be considered for credit. We will use the same scoring method as for BOINC credit.

Therefore, each completed WU will earn a unique score based on its n value. The higher the n, the higher the score. A quorum of 2 is NOT needed to award Challenge score - i.e. no double checker. Therefore, each returned result will earn a Challenge score. Please note that if the result is eventually declared invalid, the score will be removed.

At the Conclusion of the Challenge

We kindly ask users "moving on" to ABORT their WU's instead of DETACHING, RESETTING, or PAUSING.

ABORTING WU's allows them to be recycled immediately; thus a much faster "clean up" to the end of an LLR Challenge. DETACHING, RESETTING, and PAUSING WU's causes them to remain in limbo until they EXPIRE. Therefore, we must wait until WU's expire to send them out to be completed.

Please consider either completing what's in the queue or ABORTING them. Thank you. :)

About the Prime Sierpinski Problem

Wacław Franciszek Sierpiński (14 March 1882 — 21 October 1969), a Polish mathematician, was known for outstanding contributions to set theory, number theory, theory of functions and topology. It is in number theory where we find the Sierpinski problem.

Basically, the Sierpinski problem is "What is the smallest Sierpinski number" and the prime Sierpinski problem is "What is the smallest 'prime' Sierpinski number?"

First we look at Proth numbers (named after the French mathematician François Proth). A Proth number is a number of the form k*2^n+1 where k is odd, n is a positive integer, and 2^n>k.

A Sierpinski number is an odd k such that the Proth number k*2^n+1 is not prime for all n. For example, 3 is not a Sierpinski number because n=2 produces a prime number (3*2^2+1=13). In 1962, John Selfridge proved that 78,557 is a Sierpinski number...meaning he showed that for all n, 78557*2^n+1 was not prime.

Most number theorists believe that 78,557 is the smallest Sierpinski number, but it hasn't yet been proven. In order to prove that it is the smallest Sierpinski number, it has to be shown that every single k less than 78,557 is not a Sierpinski number, and to do that, some n must be found that makes k*2^n+1 prime.

The smallest proven 'prime' Sierpinski number is 271,129. In order to prove that it is the smallest prime Sierpinski number, it has to be shown that every single 'prime' k less than 271,129 is not a Sierpinski number, and to do that, some n must be found that makes k*2^n+1 prime.

Previously, PrimeGrid was working in cooperation with Seventeen or Bust on the Sierpinski problem and working with the Prime Sierpinski Project on the 'prime' Sierpinski problem. Although both Seventeen or Bust and the Prime Sierpinski Project have ceased operations, PrimeGrid continues the search independently to solve both conjectures.

The following k's remain for each project:

• Prime Sierpinski Project
  

For more information about Sierpinski, Sierpinski number, and the Sierpinsk problem, please see these resources:

• Wacław Franciszek Sierpiński (WIKI)
  
• Sierpinski number / The Sierpinski problem (WIKI)
  
• The Sierpinski problem (Prothsearch)
  

Most recently discovered primes:

258317*2^5450519+1 is prime! (found by Sloth@PSP on 28/7/2008)
90527*2^9162167+1 is prime! (found by Bold_Seeker@PSP on 19/6/2010)
10223*2^31172165+1 discovered as part of our Seventeen or Bust subproject, eliminating 10223 from both the Sierpinski Problem and the Prime Sierpinski Problem, by Szabolcs Péter (SyP). (official announcement)
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Some extra advice for anyone running the SoB double check right now (this challenge is on the PSP double check, NOT the SoB double check):

Be aware that there's still well over 1000 full length SoB tasks out being crunched, and if any of those error out or time out, the server will resend them. This close to the start of the challenge, unexpectedly getting one of those very long tasks could cause you to miss the start of the challenge. (Since the SoB DC started, I've received a long full size SoB task twice.)

Unless you're keeping a close eye on how much time remains before the challenge and are aware of how long it takes your computer to process one of those massive tasks, you might want to consider not running any more SoB tasks until after the challenge.
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My lucky number is 75898⁵²⁴²⁸⁸+1

One other caution: this challenge starts as 12:00 UTC, 6 hours earlier than "normal".
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My lucky number is 75898⁵²⁴²⁸⁸+1

and here we go: happy racing!
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Sysadm@Nbg
my current lucky number: 113856050^65536 + 1
PSA-PRPNet-Stats-URL: http://u-g-f.de/PRPNet/

The challenge has begun!

Statistics are being generated, but I don't expect any results to come in for a few hours. With the new LLR that optionally supports multi-threading, it's hard to predict how long it will take for the first result.

Good luck everyone!
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My lucky number is 75898⁵²⁴²⁸⁸+1

The first result is in. The task took slightly less than three and a half hours. It ran on all six full cores of a Haswell-E hex-core i7.

Congrats to Van Zimmerman!

What I find interesting is that this wasn't a brand new Kabylake CPU. Two or three generations of Intel CPUs have come out since this one was new.
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My lucky number is 75898⁵²⁴²⁸⁸+1

Status after 1 half of 1 day:

Challenge: Mathematics Awareness Month
App: 8 (PSP-LLR)
(As of 2017-04-08 00:55:36 UTC)

7719 tasks have been sent out. [CPU/GPU/anonymous_platform: 7680 (99%) / 0 (0%) / 39 (1%)]

Of those tasks that have been sent out:

245 (3%) came back with some kind of an error. [245 (3%) / 0 (0%) / 0 (0%)]
158 (2%) have returned a successful result. [145 (2%) / 0 (0%) / 13 (0%)]
7316 (95%) are still in progress. [7290 (94%) / 0 (0%) / 26 (0%)]

Of the tasks that have been returned successfully:

153 (97%) are pending validation. [140 (89%) / 0 (0%) / 13 (8%)]
5 (3%) have been successfully validated. [5 (3%) / 0 (0%) / 0 (0%)]
0 (0%) were invalid. [0 (0%) / 0 (0%) / 0 (0%)]
0 (0%) are inconclusive. [0 (0%) / 0 (0%) / 0 (0%)]

The current leading edge (i.e., latest work unit for which work has actually been sent out to a host) is n=15055871. The leading edge was at n=13361366 at the beginning of the challenge. Since the challenge started, the leading edge has advanced 12.68% as much as it had prior to the challenge!


Normal PSP traffic is about 100 tasks per day.
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My lucky number is 75898⁵²⁴²⁸⁸+1

The first result is in. The task took slightly less than three and a half hours. It ran on all six full cores of a Haswell-E hex-core i7.

Congrats to Van Zimmerman!

What I find interesting is that this wasn't a brand new Kabylake CPU. Two or three generations of Intel CPUs have come out since this one was new.

Challenge status after 1 day:

Challenge: Mathematics Awareness Month
App: 8 (PSP-LLR)
(As of 2017-04-08 12:00:21 UTC)

8722 tasks have been sent out. [CPU/GPU/anonymous_platform: 8664 (99%) / 0 (0%) / 58 (1%)]

Of those tasks that have been sent out:

401 (5%) came back with some kind of an error. [397 (5%) / 0 (0%) / 4 (0%)]
449 (5%) have returned a successful result. [422 (5%) / 0 (0%) / 27 (0%)]
7872 (90%) are still in progress. [7845 (90%) / 0 (0%) / 27 (0%)]

Of the tasks that have been returned successfully:

413 (92%) are pending validation. [386 (86%) / 0 (0%) / 27 (6%)]
34 (8%) have been successfully validated. [34 (8%) / 0 (0%) / 0 (0%)]
0 (0%) were invalid. [0 (0%) / 0 (0%) / 0 (0%)]
2 (0%) are inconclusive. [2 (0%) / 0 (0%) / 0 (0%)]

The current leading edge (i.e., latest work unit for which work has actually been sent out to a host) is n=15083530. The leading edge was at n=13361366 at the beginning of the challenge. Since the challenge started, the leading edge has advanced 12.89% as much as it had prior to the challenge!


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My lucky number is 75898⁵²⁴²⁸⁸+1

Day 2 Status:

Challenge: Mathematics Awareness Month
App: 8 (PSP-LLR)
(As of 2017-04-09 12:41:42 UTC)

11868 tasks have been sent out. [CPU/GPU/anonymous_platform: 11772 (99%) / 0 (0%) / 96 (1%)]

Of those tasks that have been sent out:

997 (8%) came back with some kind of an error. [992 (8%) / 0 (0%) / 5 (0%)]
2027 (17%) have returned a successful result. [1970 (17%) / 0 (0%) / 57 (0%)]
8844 (75%) are still in progress. [8810 (74%) / 0 (0%) / 34 (0%)]

Of the tasks that have been returned successfully:

1562 (77%) are pending validation. [1513 (75%) / 0 (0%) / 49 (2%)]
447 (22%) have been successfully validated. [439 (22%) / 0 (0%) / 8 (0%)]
0 (0%) were invalid. [0 (0%) / 0 (0%) / 0 (0%)]
18 (1%) are inconclusive. [18 (1%) / 0 (0%) / 0 (0%)]

The current leading edge (i.e., latest work unit for which work has actually been sent out to a host) is n=15159741. The leading edge was at n=13361366 at the beginning of the challenge. Since the challenge started, the leading edge has advanced 13.46% as much as it had prior to the challenge!


The PSP double check is 44% complete.
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My lucky number is 75898⁵²⁴²⁸⁸+1

Status after 3 days:


Challenge: Mathematics Awareness Month
App: 8 (PSP-LLR)
(As of 2017-04-10 12:12:00 UTC)

15146 tasks have been sent out. [CPU/GPU/anonymous_platform: 15018 (99%) / 0 (0%) / 128 (1%)]

Of those tasks that have been sent out:

1743 (12%) came back with some kind of an error. [1737 (11%) / 0 (0%) / 6 (0%)]
3890 (26%) have returned a successful result. [3802 (25%) / 0 (0%) / 88 (1%)]
9513 (63%) are still in progress. [9479 (63%) / 0 (0%) / 34 (0%)]

Of the tasks that have been returned successfully:

2475 (64%) are pending validation. [2409 (62%) / 0 (0%) / 66 (2%)]
1349 (35%) have been successfully validated. [1327 (34%) / 0 (0%) / 22 (1%)]
1 (0%) were invalid. [1 (0%) / 0 (0%) / 0 (0%)]
65 (2%) are inconclusive. [65 (2%) / 0 (0%) / 0 (0%)]

The current leading edge (i.e., latest work unit for which work has actually been sent out to a host) is n=15238256. The leading edge was at n=13361366 at the beginning of the challenge. Since the challenge started, the leading edge has advanced 14.05% as much as it had prior to the challenge!


The double check is currently 45% complete.

Almost 4000 tasks completed in 3 days is pretty impressive. Keep up the great work! It looks like we will complete a substantial portion of the double check during the challenge.
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My lucky number is 75898⁵²⁴²⁸⁸+1

Would it be correct to say the massive jump in leading edge at the start of the challenge was due to a lot of people downloading a lot of units? The increase rate after that seems to be more moderate.

Yes, with all the considerations and risks associated, I'm thinking of using real work data to do some performance comparisons between my systems at some point later on.

Good spot, I hadn't considered a "low density" area and will take that into consideration somehow.

You're both correct. It's a combination of the massive surge of tasks that got downloaded at the start of the challenge and the gap in the work that needs to be double checked.

I'm quite pleased with the progress of this challenge, especially when you consider that the rate of valid tasks being returned should only increase as slower computers, computers using hyperthreading, and the vast majority of computers that weren't set up to use multi-threading start completing their tasks. Alas, my basement space heater is going to take about 20 days to complete its one and only challenge task, so it's not going to count. But it will finish the task... eventually.

I think right now we're on a pace to do 25% of the double check during the challenge, although that may increase somewhat due to the reasons I just mentioned. My "if-everything-goes-great" hope was that we'd do 40% during the challenge, and that's still a possibility.

We've even made certain there's leading edge work available, just in case we get that far. :)

(The number of tasks downloaded always exceeds the number that are completed, so we need more work available than we expect to be completed.)
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My lucky number is 75898⁵²⁴²⁸⁸+1

Anybody got a app_info file to run this on two Nvidia gpus?
And maybe the files needed (names) to be downloaded so that it will run. Thanks

After 4 days...


Challenge: Mathematics Awareness Month
App: 8 (PSP-LLR)
(As of 2017-04-11 13:32:22 UTC)

19635 tasks have been sent out. [CPU/GPU/anonymous_platform: 19448 (99%) / 0 (0%) / 187 (1%)]

Of those tasks that have been sent out:

2823 (14%) came back with some kind of an error. [2808 (14%) / 0 (0%) / 15 (0%)]
6179 (31%) have returned a successful result. [6049 (31%) / 0 (0%) / 130 (1%)]
10633 (54%) are still in progress. [10591 (54%) / 0 (0%) / 42 (0%)]

Of the tasks that have been returned successfully:

3297 (53%) are pending validation. [3207 (52%) / 0 (0%) / 90 (1%)]
2760 (45%) have been successfully validated. [2720 (44%) / 0 (0%) / 40 (1%)]
7 (0%) were invalid. [7 (0%) / 0 (0%) / 0 (0%)]
115 (2%) are inconclusive. [115 (2%) / 0 (0%) / 0 (0%)]

The current leading edge (i.e., latest work unit for which work has actually been sent out to a host) is n=15443373. The leading edge was at n=13361366 at the beginning of the challenge. Since the challenge started, the leading edge has advanced 15.58% as much as it had prior to the challenge!


The double check is now 48% complete.
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My lucky number is 75898⁵²⁴²⁸⁸+1

We are one-third of the way through the challenge!

Today's status:

Challenge: Mathematics Awareness Month
App: 8 (PSP-LLR)
(As of 2017-04-12 11:43:07 UTC)

22575 tasks have been sent out. [CPU/GPU/anonymous_platform: 22353 (99%) / 0 (0%) / 222 (1%)]

Of those tasks that have been sent out:

3538 (16%) came back with some kind of an error. [3522 (16%) / 0 (0%) / 16 (0%)]
8165 (36%) have returned a successful result. [8002 (35%) / 0 (0%) / 163 (1%)]
10872 (48%) are still in progress. [10829 (48%) / 0 (0%) / 43 (0%)]

Of the tasks that have been returned successfully:

3941 (48%) are pending validation. [3835 (47%) / 0 (0%) / 106 (1%)]
4048 (50%) have been successfully validated. [3992 (49%) / 0 (0%) / 56 (1%)]
27 (0%) were invalid. [27 (0%) / 0 (0%) / 0 (0%)]
149 (2%) are inconclusive. [148 (2%) / 0 (0%) / 1 (0%)]

The current leading edge (i.e., latest work unit for which work has actually been sent out to a host) is n=15514119. The leading edge was at n=13361366 at the beginning of the challenge. Since the challenge started, the leading edge has advanced 16.11% as much as it had prior to the challenge!


If we're 1/3 of the way through the challenge and 8000 tasks have been completed, if the rate stays the same one would expect another 16000 tasks to be completed by the end of the challenge. About 26000 more tasks need to be completed to finish the entire PSP double check.

The double check is currently 50% completed.
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My lucky number is 75898⁵²⁴²⁸⁸+1

A heads up on the tasks: we're making excellent progress on working through the PSP double check, and, as you've likely noticed, the tasks are getting larger. The most recent tasks have n greater than 16 million, and as per plan, I've increased the deadline from 14 days back to the original 21 days.

So far during the challenge, 10474 double check tasks have been returned and 23238 more are needed to complete the double check. 11315 tasks are currently in progress, and 10200 tasks have yet to be generated.
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My lucky number is 75898⁵²⁴²⁸⁸+1

Six days are in the books...

Challenge: Mathematics Awareness Month
App: 8 (PSP-LLR)
(As of 2017-04-13 12:00:10 UTC)

26485 tasks have been sent out. [CPU/GPU/anonymous_platform: 26215 (99%) / 0 (0%) / 270 (1%)]

Of those tasks that have been sent out:

4551 (17%) came back with some kind of an error. [4533 (17%) / 0 (0%) / 18 (0%)]
10580 (40%) have returned a successful result. [10380 (39%) / 0 (0%) / 200 (1%)]
11354 (43%) are still in progress. [11302 (43%) / 0 (0%) / 52 (0%)]

Of the tasks that have been returned successfully:

4544 (43%) are pending validation. [4429 (42%) / 0 (0%) / 115 (1%)]
5832 (55%) have been successfully validated. [5749 (54%) / 0 (0%) / 83 (1%)]
58 (1%) were invalid. [58 (1%) / 0 (0%) / 0 (0%)]
146 (1%) are inconclusive. [144 (1%) / 0 (0%) / 2 (0%)]

The current leading edge (i.e., latest work unit for which work has actually been sent out to a host) is n=16102341. The leading edge was at n=13361366 at the beginning of the challenge. Since the challenge started, the leading edge has advanced 20.51% as much as it had prior to the challenge!


The double check is just under 53% completed, n just passed 16 million, and the numbers being checked are 4.8 million digits in length.
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My lucky number is 75898⁵²⁴²⁸⁸+1

Started trying multithreading on BOINC today with PSP LLR. Was easy enough.
Going for 2 threads per task on Intel laptop (not using hyperthreading) and AMD CPU. Should keep the wing-people at bay, even give a little boost.

I did a test of my AMD X6 1100 CPU on PRPNet 121, threads vs throughput, while reserving the 6th core for AP27 GPU:
2 threads: 121% throughput vs single threaded. Small n=50k LLR on the 3 other CPU threads.
3 threads: 110% throughput vs single threaded. Small n=50k LLR on the 2 other CPU threads.
4 threads: 101% throughput vs single threaded. Small n=50k LLR on the 1 other CPU thread.
5 threads: 92% throughput vs single threaded

Total Challenge rate of effort has been increasing noticeably, keep it up everyone!

Status after 7 days:


Challenge: Mathematics Awareness Month
App: 8 (PSP-LLR)
(As of 2017-04-14 15:35:58 UTC)

30084 tasks have been sent out. [CPU/GPU/anonymous_platform: 29770 (99%) / 0 (0%) / 314 (1%)]

Of those tasks that have been sent out:

5598 (19%) came back with some kind of an error. [5580 (19%) / 0 (0%) / 18 (0%)]
13164 (44%) have returned a successful result. [12920 (43%) / 0 (0%) / 244 (1%)]
11322 (38%) are still in progress. [11270 (37%) / 0 (0%) / 52 (0%)]

Of the tasks that have been returned successfully:

4993 (38%) are pending validation. [4865 (37%) / 0 (0%) / 128 (1%)]
7924 (60%) have been successfully validated. [7809 (59%) / 0 (0%) / 115 (1%)]
79 (1%) were invalid. [79 (1%) / 0 (0%) / 0 (0%)]
168 (1%) are inconclusive. [167 (1%) / 0 (0%) / 1 (0%)]

The current leading edge (i.e., latest work unit for which work has actually been sent out to a host) is n=16183293. The leading edge was at n=13361366 at the beginning of the challenge. Since the challenge started, the leading edge has advanced 21.12% as much as it had prior to the challenge!


The double check is now 56% complete.
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My lucky number is 75898⁵²⁴²⁸⁸+1

That error rate keeps going up. Can you separate out how many of those are aborts as opposed to other errors?
____________

That error rate keeps going up. Can you separate out how many of those are aborts as opposed to other errors?

We've passed the halfway mark! Status after 8 days:


Challenge: Mathematics Awareness Month
App: 8 (PSP-LLR)
(As of 2017-04-15 12:01:59 UTC)

32599 tasks have been sent out. [CPU/GPU/anonymous_platform: 32250 (99%) / 0 (0%) / 349 (1%)]

Of those tasks that have been sent out:

6006 (18%) came back with some kind of an error. [5988 (18%) / 0 (0%) / 18 (0%)]
15264 (47%) have returned a successful result. [14986 (46%) / 0 (0%) / 278 (1%)]
11329 (35%) are still in progress. [11276 (35%) / 0 (0%) / 53 (0%)]

Of the tasks that have been returned successfully:

5324 (35%) are pending validation. [5196 (34%) / 0 (0%) / 128 (1%)]
9659 (63%) have been successfully validated. [9510 (62%) / 0 (0%) / 149 (1%)]
94 (1%) were invalid. [94 (1%) / 0 (0%) / 0 (0%)]
187 (1%) are inconclusive. [186 (1%) / 0 (0%) / 1 (0%)]

The current leading edge (i.e., latest work unit for which work has actually been sent out to a host) is n=16247192. The leading edge was at n=13361366 at the beginning of the challenge. Since the challenge started, the leading edge has advanced 21.60% as much as it had prior to the challenge!


The PSP Double Check is now 59% completed.
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My lucky number is 75898⁵²⁴²⁸⁸+1

After 9 days:

Challenge: Mathematics Awareness Month
App: 8 (PSP-LLR)
(As of 2017-04-16 12:17:19 UTC)

34873 tasks have been sent out. [CPU/GPU/anonymous_platform: 34487 (99%) / 0 (0%) / 386 (1%)]

Of those tasks that have been sent out:

6211 (18%) came back with some kind of an error. [6193 (18%) / 0 (0%) / 18 (0%)]
17272 (50%) have returned a successful result. [16955 (49%) / 0 (0%) / 317 (1%)]
11390 (33%) are still in progress. [11339 (33%) / 0 (0%) / 51 (0%)]

Of the tasks that have been returned successfully:

5639 (33%) are pending validation. [5504 (32%) / 0 (0%) / 135 (1%)]
11302 (65%) have been successfully validated. [11123 (64%) / 0 (0%) / 179 (1%)]
120 (1%) were invalid. [120 (1%) / 0 (0%) / 0 (0%)]
211 (1%) are inconclusive. [208 (1%) / 0 (0%) / 3 (0%)]

The current leading edge (i.e., latest work unit for which work has actually been sent out to a host) is n=16312151. The leading edge was at n=13361366 at the beginning of the challenge. Since the challenge started, the leading edge has advanced 22.08% as much as it had prior to the challenge!


The double check is 62% complete.
____________
My lucky number is 75898⁵²⁴²⁸⁸+1

The challenge is now two-thirds complete. Status so far...


Challenge: Mathematics Awareness Month
App: 8 (PSP-LLR)
(As of 2017-04-17 12:13:50 UTC)

37614 tasks have been sent out. [CPU/GPU/anonymous_platform: 37183 (99%) / 0 (0%) / 431 (1%)]

Of those tasks that have been sent out:

6574 (17%) came back with some kind of an error. [6554 (17%) / 0 (0%) / 20 (0%)]
19649 (52%) have returned a successful result. [19295 (51%) / 0 (0%) / 354 (1%)]
11391 (30%) are still in progress. [11334 (30%) / 0 (0%) / 57 (0%)]

Of the tasks that have been returned successfully:

5867 (30%) are pending validation. [5725 (29%) / 0 (0%) / 142 (1%)]
13397 (68%) have been successfully validated. [13187 (67%) / 0 (0%) / 210 (1%)]
149 (1%) were invalid. [149 (1%) / 0 (0%) / 0 (0%)]
236 (1%) are inconclusive. [234 (1%) / 0 (0%) / 2 (0%)]

The current leading edge (i.e., latest work unit for which work has actually been sent out to a host) is n=16385436. The leading edge was at n=13361366 at the beginning of the challenge. Since the challenge started, the leading edge has advanced 22.63% as much as it had prior to the challenge!


Participation has been off the charts. I consider a good challenge to be when we get five times the normal daily participation, and a great challenge to be ten times normal. We normally do about 110 PSP tasks each day. We're doing about TWENTY times that, with over two thousand tasks a day completed.

The PSP double check was about 40% done at the beginning of the challenge. The double check started five months ago. After the first 10 days of the challenge, we have now exceeded the 65% completed mark.
____________
My lucky number is 75898⁵²⁴²⁸⁸+1

We're approaching a milestone of sorts.

If you've been paying attention, you've noticed that as the challenge has progressed the tasks have been getting longer (and the credit per task has been increasing proportionally.) The tasks at the beginning of the challenge were about 10,000 credits each, while recent tasks have been above 16,000.

Current tasks are in the n=16M range. There's about 2000 of those left as well as a very small number of n=17M tasks, and then that's it for the double check. The server will then start sending out new leading edge tasks with n near the top of the 18M range (about 700 tasks), and then will continue with tasks in the n=19M range.

So far four FFT sizes have been used during the challenge. Each increase in the FFT size incurs a noticeable increase in task length (and credit). There will be another FFT size increase as we get closer to the last of the double check tasks, and then a further increase in FFT size as we switch to the leading edge tasks. Tasks sizes will therefore increase twice in the next day or two.
____________
My lucky number is 75898⁵²⁴²⁸⁸+1

The first 11 days of the challenge are in the books. 4 days remain.

Challenge: Mathematics Awareness Month
App: 8 (PSP-LLR)
(As of 2017-04-18 12:00:50 UTC)

40493 tasks have been sent out. [CPU/GPU/anonymous_platform: 40028 (99%) / 0 (0%) / 465 (1%)]

Of those tasks that have been sent out:

7573 (19%) came back with some kind of an error. [7553 (19%) / 0 (0%) / 20 (0%)]
21860 (54%) have returned a successful result. [21472 (53%) / 0 (0%) / 388 (1%)]
11060 (27%) are still in progress. [11003 (27%) / 0 (0%) / 57 (0%)]

Of the tasks that have been returned successfully:

6110 (28%) are pending validation. [5976 (27%) / 0 (0%) / 134 (1%)]
15326 (70%) have been successfully validated. [15074 (69%) / 0 (0%) / 252 (1%)]
178 (1%) were invalid. [178 (1%) / 0 (0%) / 0 (0%)]
246 (1%) are inconclusive. [244 (1%) / 0 (0%) / 2 (0%)]

The current leading edge (i.e., latest work unit for which work has actually been sent out to a host) is n=16442192. The leading edge was at n=13361366 at the beginning of the challenge. Since the challenge started, the leading edge has advanced 23.06% as much as it had prior to the challenge!


The PSP double check is now 69 percent complete. There's still a couple hundred of the double check tasks waiting to be sent out.
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My lucky number is 75898⁵²⁴²⁸⁸+1

With new, leading edge tasks now being sent out, it's entirely possible that the next task might be prime!
____________
My lucky number is 75898⁵²⁴²⁸⁸+1

The leading edge tasks should be about 40% larger than most of the largest double check tasks (which were about 50% larger than the double check tasks at the beginning of the challenge.)

This is, quite literally, progress. Lots of it!

At the beginning of the challenge, tasks were about 10,000 credits. The largest of the double check tasks were about 16,000 credits. The leading edge tasks should be about 23,000 credits.
____________
My lucky number is 75898⁵²⁴²⁸⁸+1

With new, leading edge tasks now being sent out, it's entirely possible that the next task might be prime!

Three days to go! At the end of day 12:


Challenge: Mathematics Awareness Month
App: 8 (PSP-LLR)
(As of 2017-04-19 12:00:34 UTC)

43638 tasks have been sent out. [CPU/GPU/anonymous_platform: 43134 (99%) / 0 (0%) / 504 (1%)]

Of those tasks that have been sent out:

8545 (20%) came back with some kind of an error. [8523 (20%) / 0 (0%) / 22 (0%)]
24288 (56%) have returned a successful result. [23869 (55%) / 0 (0%) / 419 (1%)]
10805 (25%) are still in progress. [10742 (25%) / 0 (0%) / 63 (0%)]

Of the tasks that have been returned successfully:

6009 (25%) are pending validation. [5876 (24%) / 0 (0%) / 133 (1%)]
17796 (73%) have been successfully validated. [17512 (72%) / 0 (0%) / 284 (1%)]
205 (1%) were invalid. [205 (1%) / 0 (0%) / 0 (0%)]
278 (1%) are inconclusive. [276 (1%) / 0 (0%) / 2 (0%)]

The current leading edge (i.e., latest work unit for which work has actually been sent out to a host) is n=19035648. The leading edge was at n=13361366 at the beginning of the challenge. Since the challenge started, the leading edge has advanced 42.47% as much as it had prior to the challenge!


The double check is now 73% completed, with all of the remainder out being crunched. As you can tell from the leading edge being in the n=19 million range, we're once again sending out new, leading edge PSP tasks.


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My lucky number is 75898⁵²⁴²⁸⁸+1

Bit of a shame that there were no hidden gems in the double check.

Two days to go!

Challenge: Mathematics Awareness Month
App: 8 (PSP-LLR)
(As of 2017-04-20 11:50:40 UTC)

46068 tasks have been sent out. [CPU/GPU/anonymous_platform: 45525 (99%) / 0 (0%) / 543 (1%)]

Of those tasks that have been sent out:

9799 (21%) came back with some kind of an error. [9768 (21%) / 0 (0%) / 31 (0%)]
26299 (57%) have returned a successful result. [25852 (56%) / 0 (0%) / 447 (1%)]
9970 (22%) are still in progress. [9905 (22%) / 0 (0%) / 65 (0%)]

Of the tasks that have been returned successfully:

5840 (22%) are pending validation. [5707 (22%) / 0 (0%) / 133 (1%)]
19929 (76%) have been successfully validated. [19617 (75%) / 0 (0%) / 312 (1%)]
242 (1%) were invalid. [242 (1%) / 0 (0%) / 0 (0%)]
288 (1%) are inconclusive. [286 (1%) / 0 (0%) / 2 (0%)]

The current leading edge (i.e., latest work unit for which work has actually been sent out to a host) is n=19076951. The leading edge was at n=13361366 at the beginning of the challenge. Since the challenge started, the leading edge has advanced 42.78% as much as it had prior to the challenge!


The double check is over 76% completed right now. "Completed" refers to workunits, not results. Most of the remaining ~7000 workunits have one result already and are waiting for the wingman's result for validation.
____________
My lucky number is 75898⁵²⁴²⁸⁸+1

One day left!

Challenge: Mathematics Awareness Month
App: 8 (PSP-LLR)
(As of 2017-04-21 12:24:54 UTC)

47745 tasks have been sent out. [CPU/GPU/anonymous_platform: 47159 (99%) / 0 (0%) / 586 (1%)]

Of those tasks that have been sent out:

10758 (23%) came back with some kind of an error. [10711 (22%) / 0 (0%) / 47 (0%)]
28172 (59%) have returned a successful result. [27694 (58%) / 0 (0%) / 478 (1%)]
8815 (18%) are still in progress. [8754 (18%) / 0 (0%) / 61 (0%)]

Of the tasks that have been returned successfully:

5604 (20%) are pending validation. [5479 (19%) / 0 (0%) / 125 (0%)]
21986 (78%) have been successfully validated. [21636 (77%) / 0 (0%) / 350 (1%)]
278 (1%) were invalid. [277 (1%) / 0 (0%) / 1 (0%)]
304 (1%) are inconclusive. [302 (1%) / 0 (0%) / 2 (0%)]

The current leading edge (i.e., latest work unit for which work has actually been sent out to a host) is n=19089333. The leading edge was at n=13361366 at the beginning of the challenge. Since the challenge started, the leading edge has advanced 42.87% as much as it had prior to the challenge!


We've now surpassed the 80% completed mark in the double check. That was my "best-case" goal for this challenge, and we're not even done yet. That 80% statistic is counting completed (i.e., validated) workunits. If you count tasks instead, the number would be closer to 90%. There's 5958 workunits remaining in the double check, of which 5308 already have one result that's been returned. The DC is waiting for 6608 tasks to complete. Over 150 thousand tasks have been completed since we started the double check.
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My lucky number is 75898⁵²⁴²⁸⁸+1

With one day to go, it's time for our public service announcement about helping at the end of the challenge...

At the Conclusion of the Challenge

We would prefer users "moving on" to finish those tasks they have downloaded, if not then please ABORT the WU's (and then UPDATE the PrimeGrid project) instead of DETACHING, RESETTING, or PAUSING.

ABORTING WU's allows them to be recycled immediately; thus a much faster "clean up" to the end of a Challenge. DETACHING, RESETTING, and PAUSING WU's causes them to remain in limbo until they EXPIRE. Therefore, we must wait until WU's expire to send them out to be completed. Since these tasks have a 21 day deadline, this causes up to a three week delay in determining the final challenge standings. Your help is greatly appreciated. Thank you!
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My lucky number is 75898⁵²⁴²⁸⁸+1

WE ARE DONE!

Final statistics:

Challenge: Mathematics Awareness Month
App: 8 (PSP-LLR)
(As of 2017-04-22 12:02:39 UTC)

49229 tasks have been sent out. [CPU/GPU/anonymous_platform: 48607 (99%) / 0 (0%) / 622 (1%)]

Of those tasks that have been sent out:

11599 (24%) came back with some kind of an error. [11538 (23%) / 0 (0%) / 61 (0%)]
30362 (62%) have returned a successful result. [29854 (61%) / 0 (0%) / 508 (1%)]
7264 (15%) are still in progress. [7211 (15%) / 0 (0%) / 53 (0%)]

Of the tasks that have been returned successfully:

5027 (17%) are pending validation. [4911 (16%) / 0 (0%) / 116 (0%)]
24711 (81%) have been successfully validated. [24321 (80%) / 0 (0%) / 390 (1%)]
338 (1%) were invalid. [337 (1%) / 0 (0%) / 1 (0%)]
286 (1%) are inconclusive. [285 (1%) / 0 (0%) / 1 (0%)]

The current leading edge (i.e., latest work unit for which work has actually been sent out to a host) is n=19108319. The leading edge was at n=13361366 at the beginning of the challenge. Since the challenge started, the leading edge has advanced 43.01% as much as it had prior to the challenge!


To say I'm pleased with this challenge would be a gross understatement. Although the explicit purpose for this challenge was to assist with the PSP double check, never did I imagine that we'd actually finish the double check during the challenge. But that's exactly what we did. We went all the way from n=13 million to n=17 million, completing the double check (or at least sending all the DC tasks out), and are now above n=19.1 million and back to checking regular PSP candidates. Wow! We're still waiting for a bunch of those double check tasks to complete, but like the challenge cleanup, they'll trickle in over time. The bulk of the work is done.

And speaking of cleanups, we now begin the cleanup phase of the challenge. With the long task deadlines, I expect the cleanup to take between 2 and 4 months.
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My lucky number is 75898⁵²⁴²⁸⁸+1

Cleanup Status:
Apr-22: Mathematics Awareness Month: 5309 tasks outstanding; 4447 affecting individual (292) scoring positions; 2065 affecting team (69) scoring positions.
Apr-23: Mathematics Awareness Month: 4581 tasks outstanding; 3813 affecting individual (288) scoring positions; 1581 affecting team (65) scoring positions
Apr-24: Mathematics Awareness Month: 3882 tasks outstanding; 3029 affecting individual (274) scoring positions; 1313 affecting team (61) scoring positions.
Apr-25: Mathematics Awareness Month: 3395 tasks outstanding; 2652 affecting individual (270) scoring positions; 1136 affecting team (55) scoring positions.
Apr-26: Mathematics Awareness Month: 3042 tasks outstanding; 2329 affecting individual (260) scoring positions; 890 affecting team (49) scoring positions.
Apr-27: Mathematics Awareness Month: 2742 tasks outstanding; 2085 affecting individual (257) scoring positions; 738 affecting team (47) scoring positions.
Apr-28: Mathematics Awareness Month: 2368 tasks outstanding; 1745 affecting individual (244) scoring positions; 614 affecting team (42) scoring positions.
Apr-29: Mathematics Awareness Month: 2068 tasks outstanding; 1508 affecting individual (236) scoring positions; 536 affecting team (41) scoring positions.
Apr-30: Mathematics Awareness Month: 1827 tasks outstanding; 1130 affecting individual (220) scoring positions; 452 affecting team (35) scoring positions.
____________
My lucky number is 75898⁵²⁴²⁸⁸+1

Cleanup Status:

Apr 22: Mathematics Awareness Month: 5309 tasks outstanding; 4447 affecting individual (292) scoring positions; 2065 affecting team (69) scoring positions.
Apr 30: Mathematics Awareness Month: 1827 tasks outstanding; 1130 affecting individual (220) scoring positions; 452 affecting team (35) scoring positions.
May 1: Mathematics Awareness Month: 1640 tasks outstanding; 955 affecting individual (209) scoring positions; 403 affecting team (32) scoring positions.
May 2: Mathematics Awareness Month: 1511 tasks outstanding; 863 affecting individual (201) scoring positions; 380 affecting team (31) scoring positions.
May 3: Mathematics Awareness Month: 1362 tasks outstanding; 771 affecting individual (189) scoring positions; 335 affecting team (29) scoring positions.
May 4: Mathematics Awareness Month: 1260 tasks outstanding; 721 affecting individual (183) scoring positions; 293 affecting team (27) scoring positions.
May 5: Mathematics Awareness Month: 1187 tasks outstanding; 669 affecting individual (178) scoring positions; 244 affecting team (23) scoring positions.
May 6: Mathematics Awareness Month: 1085 tasks outstanding; 608 affecting individual (174) scoring positions; 225 affecting team (21) scoring positions
May 7: Mathematics Awareness Month: 1026 tasks outstanding; 581 affecting individual (170) scoring positions; 215 affecting team (20) scoring positions.
May 8: Mathematics Awareness Month: 941 tasks outstanding; 510 affecting individual (158) scoring positions; 199 affecting team (18) scoring positions.
May 9: Mathematics Awareness Month: 876 tasks outstanding; 481 affecting individual (151) scoring positions; 187 affecting team (17) scoring positions.
May 10: Mathematics Awareness Month: 797 tasks outstanding; 430 affecting individual (142) scoring positions; 147 affecting team (15) scoring positions.
May 11: Mathematics Awareness Month: 655 tasks outstanding; 350 affecting individual (125) scoring positions; 42 affecting team (13) scoring positions.
May 12: Mathematics Awareness Month: 626 tasks outstanding; 330 affecting individual (117) scoring positions; 40 affecting team (13) scoring positions.
May 13: Mathematics Awareness Month: 589 tasks outstanding; 310 affecting individual (112) scoring positions; 25 affecting team (12) scoring positions.
May 14: Mathematics Awareness Month: 539 tasks outstanding; 275 affecting individual (99) scoring positions; 23 affecting team (10) scoring positions.
May 15: Mathematics Awareness Month: 487 tasks outstanding; 226 affecting individual (92) scoring positions; 21 affecting team (10) scoring positions.
May 16: Mathematics Awareness Month: 437 tasks outstanding; 196 affecting individual (83) scoring positions; 20 affecting team (10) scoring positions.
May 17: Mathematics Awareness Month: 400 tasks outstanding; 165 affecting individual (75) scoring positions; 18 affecting team (10) scoring positions.
May 18: Mathematics Awareness Month: 362 tasks outstanding; 134 affecting individual (70) scoring positions; 16 affecting team (9) scoring positions.
May 19: Mathematics Awareness Month: 327 tasks outstanding; 120 affecting individual (67) scoring positions; 16 affecting team (9) scoring positions.
May 20: Mathematics Awareness Month: 296 tasks outstanding; 103 affecting individual (63) scoring positions; 14 affecting team (8) scoring positions.
May 21: Mathematics Awareness Month: 274 tasks outstanding; 96 affecting individual (58) scoring positions; 14 affecting team (8) scoring positions.
May 22: Mathematics Awareness Month: 245 tasks outstanding; 86 affecting individual (51) scoring positions; 8 affecting team (5) scoring positions.
May 23: Mathematics Awareness Month: 232 tasks outstanding; 80 affecting individual (49) scoring positions; 7 affecting team (4) scoring positions.
May 24: Mathematics Awareness Month: 215 tasks outstanding; 73 affecting individual (44) scoring positions; 7 affecting team (4) scoring positions.
May 25: Mathematics Awareness Month: 197 tasks outstanding; 67 affecting individual (40) scoring positions; 4 affecting team (2) scoring positions.
May 26: Mathematics Awareness Month: 182 tasks outstanding; 58 affecting individual (37) scoring positions; 3 affecting team (2) scoring positions.
May 27: Mathematics Awareness Month: 168 tasks outstanding; 57 affecting individual (36) scoring positions; 3 affecting team (2) scoring positions.
May 28: Mathematics Awareness Month: 157 tasks outstanding; 49 affecting individual (32) scoring positions; 2 affecting team (1) scoring positions.
May 29: Mathematics Awareness Month: 147 tasks outstanding; 44 affecting individual (28) scoring positions; 2 affecting team (1) scoring positions.
May 30: Mathematics Awareness Month: 137 tasks outstanding; 43 affecting individual (28) scoring positions; 2 affecting team (1) scoring positions.
May 31: Mathematics Awareness Month: 127 tasks outstanding; 40 affecting individual (26) scoring positions; 2 affecting team (1) scoring positions.
____________
My lucky number is 75898⁵²⁴²⁸⁸+1

Cleanup Status:

Apr 22: Mathematics Awareness Month: 5309 tasks outstanding; 4447 affecting individual (292) scoring positions; 2065 affecting team (69) scoring positions.
Apr 30: Mathematics Awareness Month: 1827 tasks outstanding; 1130 affecting individual (220) scoring positions; 452 affecting team (35) scoring positions.
May 31: Mathematics Awareness Month: 127 tasks outstanding; 40 affecting individual (26) scoring positions; 2 affecting team (1) scoring positions.
Jun 1: Mathematics Awareness Month: 118 tasks outstanding; 34 affecting individual (24) scoring positions; 2 affecting team (1) scoring positions.
Jun 2: Mathematics Awareness Month: 112 tasks outstanding; 30 affecting individual (21) scoring positions; 2 affecting team (1) scoring positions.
Jun 3: Mathematics Awareness Month: 105 tasks outstanding; 27 affecting individual (19) scoring positions; 2 affecting team (1) scoring positions.
Jun 4: Mathematics Awareness Month: 101 tasks outstanding; 27 affecting individual (19) scoring positions; 2 affecting team (1) scoring positions.
Jun 5: Mathematics Awareness Month: 93 tasks outstanding; 25 affecting individual (18) scoring positions; 2 affecting team (1) scoring positions.
Jun 6: Mathematics Awareness Month: 86 tasks outstanding; 24 affecting individual (17) scoring positions; 2 affecting team (1) scoring positions.
Jun 7: Mathematics Awareness Month: 82 tasks outstanding; 23 affecting individual (16) scoring positions; 2 affecting team (1) scoring positions.
Jun 8: Mathematics Awareness Month: 76 tasks outstanding; 21 affecting individual (14) scoring positions; 2 affecting team (1) scoring positions.
Jun 9: Mathematics Awareness Month: 72 tasks outstanding; 19 affecting individual (13) scoring positions; 1 affecting team (1) scoring positions.
Jun 10: Mathematics Awareness Month: 63 tasks outstanding; 18 affecting individual (12) scoring positions; 1 affecting team (1) scoring positions.
Jun 11: Mathematics Awareness Month: 57 tasks outstanding; 16 affecting individual (11) scoring positions; 0 affecting team (0) scoring positions.
Jun 12: Mathematics Awareness Month: 51 tasks outstanding; 12 affecting individual (8) scoring positions; 0 affecting team (0) scoring positions
Jun 13: Mathematics Awareness Month: 44 tasks outstanding; 11 affecting individual (8) scoring positions; 0 affecting team (0) scoring positions.
Jun 14: Mathematics Awareness Month: 40 tasks outstanding; 11 affecting individual (8) scoring positions; 0 affecting team (0) scoring positions.
Jun 15: Mathematics Awareness Month: 40 tasks outstanding; 11 affecting individual (8) scoring positions; 0 affecting team (0) scoring positions.
Jun 16: Mathematics Awareness Month: 37 tasks outstanding; 11 affecting individual (8) scoring positions; 0 affecting team (0) scoring positions.
Jun 17: Mathematics Awareness Month: 36 tasks outstanding; 11 affecting individual (8) scoring positions; 0 affecting team (0) scoring positions.
Jun 18: Mathematics Awareness Month: 31 tasks outstanding; 8 affecting individual (7) scoring positions; 0 affecting team (0) scoring positions.
Jun 19: Mathematics Awareness Month: 26 tasks outstanding; 4 affecting individual (3) scoring positions; 0 affecting team (0) scoring positions.
Jun 20: Mathematics Awareness Month: 22 tasks outstanding; 3 affecting individual (2) scoring positions; 0 affecting team (0) scoring positions.
Jun 21: Mathematics Awareness Month: 21 tasks outstanding; 1 affecting individual (1) scoring positions; 0 affecting team (0) scoring positions.
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My lucky number is 75898⁵²⁴²⁸⁸+1

The results are final!

Top 3 individuals:

1: zunewantan
2: 1998golfer
3: Scott Brown

Top 3 teams:

1: Aggie The Pew
2: SETI.Germany
3: Czech National Team

Congratulations to the winners, and well done to everyone who participated.
See you at the GCW-LLR challenge!
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