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11) Message boards : News : Euler's Number Challenge starts November 23rd (Message 152319)
Posted 16 days ago by Profile Michael GutierrezProject donor
The eighth challenge of the 2021 Series will be a 3-day challenge in Thanksgiving™ of the anniversary of the introduction of e, or Euler's Number! The challenge will be offered on the AP27 Search subproject, beginning 23 November 05:00 UTC and ending 26 November 05:00 UTC.

To participate in the Challenge, please select only the AP 27 (AP27) project in your PrimeGrid preferences section.

For more info and discussion, check out the forum thread for this challenge: https://www.primegrid.com/forum_thread.php?id=9792&nowrap=true#152286

Best of luck!
12) Message boards : Number crunching : Euler's Number Challenge (Message 152286)
Posted 20 days ago by Profile Michael GutierrezProject donor
Welcome to Euler's Number Challenge

The eighth challenge of the 2021 Series will be a 3-day challenge in Thanksgiving™ of the anniversary of the introduction of e, or Euler's Number! The challenge will be offered on the AP27 Search subproject, beginning 23 November 05:00 UTC and ending 26 November 05:00 UTC.

2.71828182845904523536028747135266249775724709369995...
Euler's Number (not to be confused with Euler's Constant) is ubiquitous throughout seemingly unrelated fields of mathematics (not the least of which is prime numbers!) In reality, though, we've only been using this number since about 1690, and it only received its characteristic abbreviation e in Leonard Euler's letter to Christian Goldbach on November 25th, 1731.

Arithmetic progressions
In mathematics, an arithmetic progression (AP) or arithmetic sequence is a sequence of numbers such that the difference between the consecutive terms is constant. For instance, the sequence 5, 7, 9, 11, 13, 15 … is an arithmetic progression with common difference of 2.

An arithmetic progression of primes is a sequence of primes with a common difference between any two successive numbers in the sequence. For example 3, 7, 11 is an arithmetic progression of 3 primes with a common difference of 4.

For an arithmetic progression (AP) of primes, AP-k is k primes of the form p + d*n for some d (the common difference between the primes) and k consecutive values of n. The above AP-3 is 3 + 4*n for n=0,1,2.

How to Participate?
To participate in the Challenge, please select only the AP 27 (AP27) project in your PrimeGrid preferences section. Application builds are available for Linux , Windows and MacIntel CPUs and GPUs. CPU apps are only available for 64 bit CPUs. High end Nvidia GPUs will have a very large advantage.

Tasks will take ~26 hours on average for CPUs and ~4 hours on average for GPUs. If your computer is highly overclocked, please consider "stress testing" it. If you haven't run the AP app before, we strongly suggest running it before the challenge while you are monitoring the temperatures. You don't want to turn your machine into a meteor!

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 at the very top, above the countdown clock.

Scoring Information

Scores will be kept for individuals and teams. Only tasks issued AFTER 23 November 05:00 UTC and received BEFORE 26 November 05:00 UTC will be considered for credit. We will be using the same scoring method as we currently use for BOINC credits. 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 tasks instead of DETACHING, RESETTING, or PAUSING.

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

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


For more information about the AP27 search, please visit these links:
- AP 27 Search
- AP 26 Search
- http://en.wikipedia.org/wiki/Arithmetic_progression
- Jens Kruse Andersen's Primes in Arithmetic Progression Records

13) Message boards : Number crunching : Martin Gardner's Birthday Challenge (Message 152077)
Posted 35 days ago by Profile Michael GutierrezProject donor
Cleanup Status:

Oct 29: 2122 tasks outstanding; 1606 affecting individual (229) scoring positions; 869 affecting team (50) scoring positions.
Oct 30: 1878 tasks outstanding; 1407 affecting individual (219) scoring positions; 748 affecting team (48) scoring positions.
Oct 31: 1433 tasks outstanding; 1054 affecting individual (198) scoring positions; 558 affecting team (40) scoring positions.
Nov 1: 866 tasks outstanding; 470 affecting individual (141) scoring positions; 219 affecting team (26) scoring positions.
Nov 2: 735 tasks outstanding; 363 affecting individual (122) scoring positions; 189 affecting team (23) scoring positions.
Nov 3: 548 tasks outstanding; 243 affecting individual (92) scoring positions; 121 affecting team (18) scoring positions.
Nov 4: 288 tasks outstanding; 135 affecting individual (60) scoring positions; 13 affecting team (9) scoring positions.
Nov 5: 166 tasks outstanding; 73 affecting individual (39) scoring positions; 7 affecting team (7) scoring positions.
Nov 6: 89 tasks outstanding; 27 affecting individual (23) scoring positions; 5 affecting team (5) scoring positions.
Nov 7: 45 tasks outstanding; 13 affecting individual (12) scoring positions; 0 affecting team (0) scoring positions.
Nov 8: 9 tasks outstanding; 3 affecting individual (3) scoring positions; 0 affecting team (0) scoring positions.
Nov 9: 5 tasks outstanding; 3 affecting individual (3) scoring positions; 0 affecting team (0) scoring positions.
Nov 10: 5 tasks outstanding; 3 affecting individual (3) scoring positions; 0 affecting team (0) scoring positions.
Nov 11: 5 tasks outstanding; 3 affecting individual (3) scoring positions; 0 affecting team (0) scoring positions.
Nov 12: 5 tasks outstanding; 3 affecting individual (3) scoring positions; 0 affecting team (0) scoring positions.
Nov 13: 5 tasks outstanding; 3 affecting individual (3) scoring positions; 0 affecting team (0) scoring positions.
Nov 14: 3 tasks outstanding; 2 affecting individual (2) scoring positions; 0 affecting team (0) scoring positions.
Nov 15: 3 tasks outstanding; 2 affecting individual (2) scoring positions; 0 affecting team (0) scoring positions.
14) Message boards : Number crunching : Martin Gardner's Birthday Challenge (Message 152021)
Posted 38 days ago by Profile Michael GutierrezProject donor
Here are the final stats for the end of the challenge - phenomenal work! Cleanup is starting now.

Challenge: Martin Gardner's Birthday
App: 30 (GCW-LLR)
Fast DC tasks are NOT included.
(As of 2021-10-28 19:50:16 UTC)

44585 tasks have been sent out. [CPU/GPU/anonymous_platform: 44585 (100%) / 0 (0%) / 0 (0%)]

Of those tasks that have been sent out:

16185 (36%) were aborted. [16185 (36%) / 0 (0%) / 0 (0%)]
435 (1%) came back with some kind of an error. [435 (1%) / 0 (0%) / 0 (0%)]
15638 (35%) have returned a successful result. [15638 (35%) / 0 (0%) / 0 (0%)]
8453 (19%) are still in progress. [8453 (19%) / 0 (0%) / 0 (0%)]

Of the tasks that have been returned successfully:

2364 (15%) are pending validation. [2364 (15%) / 0 (0%) / 0 (0%)]
13274 (85%) have been successfully validated. [13274 (85%) / 0 (0%) / 0 (0%)]
1 (0%) were invalid. [1 (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=6347216. The leading edge was at n=5844056 at the beginning of the challenge. Since the challenge started, the leading edge has advanced 8.61% as much as it had prior to the challenge!
15) Message boards : Number crunching : Martin Gardner's Birthday Challenge (Message 152000)
Posted 39 days ago by Profile Michael GutierrezProject donor
A few hours left in the challenge! Some friendly reminders... :)

At the Conclusion of the Challenge

When the challenge completes, 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.

Likewise, if you're shutting down the computer for an extended period of time, or deleting the VM (Virtual Machine), please ABORT all remaining tasks first. Also, be aware that merely shutting off a cloud server doesn't stop the billing. You have to destroy/delete the server if you don't want to continue to be charged for it.

Thank you!
16) Message boards : Number crunching : Martin Gardner's Birthday Challenge (Message 151983)
Posted 40 days ago by Profile Michael GutierrezProject donor
6 days down, one to go!

Challenge: Martin Gardner's Birthday
App: 30 (GCW-LLR)
Fast DC tasks are NOT included.
(As of 2021-10-26 23:50:23 UTC)

39462 tasks have been sent out. [CPU/GPU/anonymous_platform: 39462 (100%) / 0 (0%) / 0 (0%)]

Of those tasks that have been sent out:

9002 (23%) were aborted. [9002 (23%) / 0 (0%) / 0 (0%)]
401 (1%) came back with some kind of an error. [401 (1%) / 0 (0%) / 0 (0%)]
12356 (31%) have returned a successful result. [12356 (31%) / 0 (0%) / 0 (0%)]
17703 (45%) are still in progress. [17703 (45%) / 0 (0%) / 0 (0%)]

Of the tasks that have been returned successfully:

3089 (25%) are pending validation. [3089 (25%) / 0 (0%) / 0 (0%)]
9267 (75%) have been successfully validated. [9267 (75%) / 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=6347216. The leading edge was at n=5844056 at the beginning of the challenge. Since the challenge started, the leading edge has advanced 8.61% as much as it had prior to the challenge!
17) Message boards : Number crunching : Martin Gardner's Birthday Challenge (Message 151963)
Posted 41 days ago by Profile Michael GutierrezProject donor
Day 5 stats comin' at ya:

Challenge: Martin Gardner's Birthday
App: 30 (GCW-LLR)
Fast DC tasks are NOT included.
(As of 2021-10-26 00:20:03 UTC)

36210 tasks have been sent out. [CPU/GPU/anonymous_platform: 36210 (100%) / 0 (0%) / 0 (0%)]

Of those tasks that have been sent out:

4885 (13%) were aborted. [4885 (13%) / 0 (0%) / 0 (0%)]
378 (1%) came back with some kind of an error. [378 (1%) / 0 (0%) / 0 (0%)]
9638 (27%) have returned a successful result. [9638 (27%) / 0 (0%) / 0 (0%)]
21309 (59%) are still in progress. [21309 (59%) / 0 (0%) / 0 (0%)]

Of the tasks that have been returned successfully:

2380 (25%) are pending validation. [2380 (25%) / 0 (0%) / 0 (0%)]
7258 (75%) have been successfully validated. [7258 (75%) / 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=6329984. The leading edge was at n=5844056 at the beginning of the challenge. Since the challenge started, the leading edge has advanced 8.31% as much as it had prior to the challenge!
18) Message boards : Number crunching : Martin Gardner's Birthday Challenge (Message 151952)
Posted 42 days ago by Profile Michael GutierrezProject donor
Day 4:

Challenge: Martin Gardner's Birthday
App: 30 (GCW-LLR)
Fast DC tasks are NOT included.
(As of 2021-10-24 23:31:16 UTC)

31202 tasks have been sent out. [CPU/GPU/anonymous_platform: 31202 (100%) / 0 (0%) / 0 (0%)]

Of those tasks that have been sent out:

3319 (11%) were aborted. [3319 (11%) / 0 (0%) / 0 (0%)]
348 (1%) came back with some kind of an error. [348 (1%) / 0 (0%) / 0 (0%)]
7258 (23%) have returned a successful result. [7258 (23%) / 0 (0%) / 0 (0%)]
20277 (65%) are still in progress. [20277 (65%) / 0 (0%) / 0 (0%)]

Of the tasks that have been returned successfully:

2136 (29%) are pending validation. [2136 (29%) / 0 (0%) / 0 (0%)]
5122 (71%) have been successfully validated. [5122 (71%) / 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=6276314. The leading edge was at n=5844056 at the beginning of the challenge. Since the challenge started, the leading edge has advanced 7.40% as much as it had prior to the challenge!
19) Message boards : Number crunching : Martin Gardner's Birthday Challenge (Message 151937)
Posted 43 days ago by Profile Michael GutierrezProject donor
Day 3:
Challenge: Martin Gardner's Birthday
App: 30 (GCW-LLR)
Fast DC tasks are NOT included.
(As of 2021-10-24 00:58:38 UTC)

27293 tasks have been sent out. [CPU/GPU/anonymous_platform: 27293 (100%) / 0 (0%) / 0 (0%)]

Of those tasks that have been sent out:

3034 (11%) were aborted. [3034 (11%) / 0 (0%) / 0 (0%)]
331 (1%) came back with some kind of an error. [331 (1%) / 0 (0%) / 0 (0%)]
5193 (19%) have returned a successful result. [5193 (19%) / 0 (0%) / 0 (0%)]
18735 (69%) are still in progress. [18735 (69%) / 0 (0%) / 0 (0%)]

Of the tasks that have been returned successfully:

2058 (40%) are pending validation. [2058 (40%) / 0 (0%) / 0 (0%)]
3135 (60%) have been successfully validated. [3135 (60%) / 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=6216372. The leading edge was at n=5844056 at the beginning of the challenge. Since the challenge started, the leading edge has advanced 6.37% as much as it had prior to the challenge!
20) Message boards : Number crunching : Martin Gardner's Birthday Challenge (Message 151923)
Posted 44 days ago by Profile Michael GutierrezProject donor
Day 2 stats:
Challenge: Martin Gardner's Birthday
App: 30 (GCW-LLR)
Fast DC tasks are NOT included.
(As of 2021-10-22 23:04:59 UTC)

22264 tasks have been sent out. [CPU/GPU/anonymous_platform: 22264 (100%) / 0 (0%) / 0 (0%)]

Of those tasks that have been sent out:

2456 (11%) were aborted. [2456 (11%) / 0 (0%) / 0 (0%)]
87 (0%) came back with some kind of an error. [87 (0%) / 0 (0%) / 0 (0%)]
2715 (12%) have returned a successful result. [2715 (12%) / 0 (0%) / 0 (0%)]
17006 (76%) are still in progress. [17006 (76%) / 0 (0%) / 0 (0%)]

Of the tasks that have been returned successfully:

2015 (74%) are pending validation. [2015 (74%) / 0 (0%) / 0 (0%)]
700 (26%) have been successfully validated. [700 (26%) / 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=6147116. The leading edge was at n=5844056 at the beginning of the challenge. Since the challenge started, the leading edge has advanced 5.19% as much as it had prior to the challenge!


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