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1) Message boards : Number crunching : Geek Pride Day Challenge (Message 155621)
Posted 35 days ago by ReggieProject donor
Last few posts are getting off topic folks... Consider this a warning before I start removing things.
2) Message boards : News : GFN 19 Found! (Message 155564)
Posted 38 days ago by ReggieProject donor
On 15 May 2022, 17:29:48 UTC, PrimeGrid's Generalized Fermat Prime Search found the Mega Prime:

4896418^524288+1

The prime is 3,507,424 digits long and enters Chris Caldwell's The Largest Known Primes Database ranked 3rd for Generalized Fermat primes and 54th overall.

The discovery was made by Tom Greer (tng) of the United States using a GeForce RTX 3060 in an Intel(R) Core(TM) i7-6700 CPU @ 3.40GHz with 24GB RAM, running Microsoft Windows 10 Core x64 Edition. This GPU took about 1 hour, 1 minute to complete the probable prime (PRP) test using GeneferOCL2. Tom Greer is a member of Antarctic Crunchers.

The prime was verified on 16 May 2022, 19:12:23 UTC by Albert Pastuszka (User B@P) of Poland using a GeForce GTX 750 in an AMD Athlon(tm) II X3 445 Processor with 6GB RAM, running Microsoft Windows 10 Professional x64 Edition. This computer took about 6 hours, 46 minutes to complete the probable prime (PRP) test using GeneferOCL2. Albert Pastuszka is a member of BOINC@Poland.

The PRP was confirmed prime by an AMD Ryzen 5 3600 6-Core Processor with 4GB RAM, running Linux Ubuntu. This computer took about 22 hours, 17 minutes to complete the primality test using LLR.

For more details, please see the official announcement.
3) Message boards : Problems and Help : High CPU usage for GPU apps (Message 155382)
Posted 50 days ago by ReggieProject donor
I've had similar problems in the past on Linux. This is the solution I used.
4) Message boards : News : Another 321 Mega Prime! (Message 155340)
Posted 53 days ago by ReggieProject donor
On 24 March 2022, 17:27:33 UTC, PrimeGrid’s 321 Prime Search found the Mega Prime:

3*2^18924988-1

The prime is 5,696,990 digits long and enters Chris Caldwell's “The Largest Known Primes Database” ranked 18th overall.

The discovery was made by Frank Matillek (boss) of Germany using an Intel CPU with 1GB RAM, running Ubuntu Linux. This computer took about 1 day, 1 hour, 39 minutes to complete the primality test using LLR2. Frank Matillek is a member of the SETI.Germany team.

For more details, please see the official announcement.
5) Message boards : News : 321 Mega Prime! (Message 155339)
Posted 53 days ago by ReggieProject donor
On 8 January 2022, 20:46:05 UTC, PrimeGrid’s 321 Prime Search found the Mega Prime:

3*2^18196595-1

The prime is 5,477,722 digits long and has entered Chris Caldwell's “The Largest Known Primes Database” ranked 20th overall.

The discovery was made by an anonymous user of Poland using an Intel(R) Core(TM) i9-9900K CPU @ 3.60GHz with 32GB RAM, running Microsoft Windows 10 Professional x64 edition. This computer took about 2 hours, 40 minutes to complete the primality test using LLR2.

For more details, please see the official announcement.
6) Message boards : Project Staging Area : PRPNet Credit may be Irregular Until Further Notice (Message 154822)
Posted 110 days ago by ReggieProject donor
I have seen it said that the ratio is 20:1

Yes, it's a bit buried in the forums, but that is the ratio.

No,

At https://www.primegrid.com/home.php, I have got 2,996,796 PSA credit, as available to the BOINC system.

At http://prpnet.primegrid.com:12006/user_stats.html, I have got 59,852,608 (59,696,348+156,260 separated)

That's 56,855,812 in credit still missing and unchanged for about two months. That's irregular reported and on topic, if any.

From that ratio, your credit is accurate. This is off topic - see the thread title - "PRPNet Credit may be Irregular Until Further Notice". I've been doing credit regularly for a while now, so I'm locking this thread. Make new threads in the future.
7) Message boards : Project Staging Area : PRPNet Credit may be Irregular Until Further Notice (Message 153185)
Posted 170 days ago by ReggieProject donor
I have got two different UserID's among the results, that are actually the same - 'Masse' and '1455014', due to some confusion when editing the related ini file. Same applies to TeamID ('Digitronics' and '8601'). In the 'BOINC world' UserID and TeamID are pure numbers.


Yes, it has been handled correctly. In the future, please keep threads on topic.
8) Message boards : Generalized Fermat Prime Search : GFN-17-LOW will finish soon (Message 152610)
Posted 199 days ago by ReggieProject donor
Is there any way we could get a weekly update here as to how many tasks are left? I just find this strangely fascinating. Even if its just a rounded approximation?

All work has now been loaded. You can now just check the front page to see how much work is left.
9) Message boards : AP26 - AP27 Search : New APs (Message 152500)
Posted 206 days ago by ReggieProject donor
New AP26!!!

A new AP26 (Arithmetic Progression of 26 primes) has been found. The finder is Jaroslav Čampulka (oldjerry SETI) of the Czech Republic. Jaroslav Čampulka is a member of the Czech National Team.

The AP26 was returned on the 26th of November 2021 0:35:43 UTC. It was found by an NVIDIA GeForce RTX 2080 Ti on an AMD Ryzen 9 3950X 16-Core Processor running Microsoft Windows 8 Professional x64 Edition. It took about 8 minutes and 37 seconds to process the task (each task tests 100 progression differences of 10 shifts each).

The AP26 task was double checked by Raymond Ottusch (RaymondFO*) of the United States and was returned on the 27th of November 2021 5:02:47 UTC. This task was run on an NVIDIA GeForce RTX 2080 on an Intel(R) Core(TM) i7-4790K CPU @ 4.00GHz Processor running Ubuntu 18.04.6 LTS. The double check took about 17 minutes and 37 seconds to complete.

The progression is written as 461497054041390487+108734395*23#*n for n=0..25. Credits are as follows:

Finder: Jaroslav Čampulka
Project: PrimeGrid
Program: AP26

The original AP26 CPU program was written by Jaroslaw Wroblewski and adapted to BOINC by Geoff Reynolds, and the GPU program was written by Bryan Little and Gerrit Slomma.
The 2016 CPU and OpenCL versions of AP26 were updated by Bryan Little, Iain Bethune, and Sebastian Jaworowicz.

All application builds by Bryan Little and Iain Bethune

The AP26 will be listed in Jens Kruse Andersen's Primes in Arithmetic Progression Records page under the section(s):


Congratulations!

Additional AP Information
How to search for 26 primes in arithmetic progression? by Jaroslaw Wroblewski
Primes in arithmetic progression - Wikipedia
Prime Arithmetic Progression - Wolfram MathWorld
Arithmetic sequence - The Prime Glossary at the Prime Pages

The 26 terms of the AP26
461497054041390487+108734395*23#*n for n=0..25

23#=2*3*5*7*11*13*17*19*23=223092870

461497054041390487+108734395*223092870*0=461497054041390487
461497054041390487+108734395*223092870*1=485754922289654137
461497054041390487+108734395*223092870*2=510012790537917787
461497054041390487+108734395*223092870*3=534270658786181437
461497054041390487+108734395*223092870*4=558528527034445087
461497054041390487+108734395*223092870*5=582786395282708737
461497054041390487+108734395*223092870*6=607044263530972387
461497054041390487+108734395*223092870*7=631302131779236037
461497054041390487+108734395*223092870*8=655560000027499687
461497054041390487+108734395*223092870*9=679817868275763337
461497054041390487+108734395*223092870*10=704075736524026987
461497054041390487+108734395*223092870*11=728333604772290637
461497054041390487+108734395*223092870*12=752591473020554287
461497054041390487+108734395*223092870*13=776849341268817937
461497054041390487+108734395*223092870*14=801107209517081587
461497054041390487+108734395*223092870*15=825365077765345237
461497054041390487+108734395*223092870*16=849622946013608887
461497054041390487+108734395*223092870*17=873880814261872537
461497054041390487+108734395*223092870*18=898138682510136187
461497054041390487+108734395*223092870*19=922396550758399837
461497054041390487+108734395*223092870*20=946654419006663487
461497054041390487+108734395*223092870*21=970912287254927137
461497054041390487+108734395*223092870*22=995170155503190787
461497054041390487+108734395*223092870*23=1019428023751454437
461497054041390487+108734395*223092870*24=1043685891999718087
461497054041390487+108734395*223092870*25=1067943760247981737

10) Message boards : AP26 - AP27 Search : New APs (Message 152499)
Posted 206 days ago by ReggieProject donor
New AP26!!!

A new AP26 (Arithmetic Progression of 26 primes) has been found. The finder is VirtualLarry of the United States. VirtualLarry is a member of the TeAm AnandTech team.

The AP26 was returned on the 23rd of November 2021 19:18:36 UTC. It was found by an NVIDIA GeForce GT 730 on an AMD Ryzen 7 3800X Processor running Microsoft Windows 10 Core x64 Edition. It took about 19 minutes and 41 seconds to process the task (each task tests 100 progression differences of 10 shifts each).

The AP26 task was double checked by Brian D. Niegocki (Penguin) of the United States and was returned on the 23rd of November 2021 19:38:19 UTC. This task was run on an AMD Ryzen 9 3950X Processor running Windows 10 Professional x64 Edition. The double check took about 41 minutes and 37 seconds to complete.

The progression is written as 167981701213740889+179101773*23#*n for n=0..25. Credits are as follows:

Finder: Anonymous
Project: PrimeGrid
Program: AP26

The original AP26 CPU program was written by Jaroslaw Wroblewski and adapted to BOINC by Geoff Reynolds, and the GPU program was written by Bryan Little and Gerrit Slomma.
The 2016 CPU and OpenCL versions of AP26 were updated by Bryan Little, Iain Bethune, and Sebastian Jaworowicz.

All application builds by Bryan Little and Iain Bethune

The AP26 will be listed in Jens Kruse Andersen's Primes in Arithmetic Progression Records page under the section(s):


Congratulations!

Additional AP Information
How to search for 26 primes in arithmetic progression? by Jaroslaw Wroblewski
Primes in arithmetic progression - Wikipedia
Prime Arithmetic Progression - Wolfram MathWorld
Arithmetic sequence - The Prime Glossary at the Prime Pages

The 26 terms of the AP26
167981701213740889+179101773*23#*n for n=0..25

23#=2*3*5*7*11*13*17*19*23=223092870

167981701213740889+179101773*223092870*0=167981701213740889
167981701213740889+179101773*223092870*1=207938029774399399
167981701213740889+179101773*223092870*2=247894358335057909
167981701213740889+179101773*223092870*3=287850686895716419
167981701213740889+179101773*223092870*4=327807015456374929
167981701213740889+179101773*223092870*5=367763344017033439
167981701213740889+179101773*223092870*6=407719672577691949
167981701213740889+179101773*223092870*7=447676001138350459
167981701213740889+179101773*223092870*8=487632329699008969
167981701213740889+179101773*223092870*9=527588658259667479
167981701213740889+179101773*223092870*10=567544986820325989
167981701213740889+179101773*223092870*11=607501315380984499
167981701213740889+179101773*223092870*12=647457643941643009
167981701213740889+179101773*223092870*13=687413972502301519
167981701213740889+179101773*223092870*14=727370301062960029
167981701213740889+179101773*223092870*15=767326629623618539
167981701213740889+179101773*223092870*16=807282958184277049
167981701213740889+179101773*223092870*17=847239286744935559
167981701213740889+179101773*223092870*18=887195615305594069
167981701213740889+179101773*223092870*19=927151943866252579
167981701213740889+179101773*223092870*20=967108272426911089
167981701213740889+179101773*223092870*21=1007064600987569599
167981701213740889+179101773*223092870*22=1047020929548228109
167981701213740889+179101773*223092870*23=1086977258108886619
167981701213740889+179101773*223092870*24=1126933586669545129
167981701213740889+179101773*223092870*25=1166889915230203639



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