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GFN-13 MEGA is over, GFN-12 MEGA will be started soon

GFN-13 MEGA is coming to the end. No new tasks will be available soon.

It will be replaced by next project in series, GFN-12 MEGA. Estimated start date for new project was changed to Monday, 26 July, 09:00 UTC.
20 Jul 2021, 19:38:55 UTC


PPS-MEGA double-check finished, PPS DC started

Verification of PPS-MEGA PrimeGrid work (currently running in "LLR2 testing" subproject) is complete! It mean that all PrimeGrid work which can produce a Mega prime (n > 3,32M) has been validated to be sure that each test have either two matching results from different users, either mathematical proof of correctness (LLR2). During verification, we found a missed prime 65·23369359+1.

On the next phase, we will validate PPS work, i.e. tests with n < 3,32M. We will start in range 3M-3,32M for applicable k's and go down - i.e. when this range will be finished, we'll test 2M-3M, then 1M-2M, and so on. As we'll go down, tasks will became shorter and shorter and will be completed faster.
27 May 2021, 18:47:43 UTC


"GFN-1x Small Primes" is restarted

The "GFN-1x Small Primes" project will be restarted Monday, 26 April 2021, at 09:00 UTC. In the second phase, we will test GFN-13 from 400M to 2000M.

See PrimeGrid forum post for full announce
23 Apr 2021, 12:19:10 UTC


GFN-14 MEGA is finished!

13 Apr 2021, last GFN-14 MEGA workunit was returned and validated, finishing cleanup of the project at bmin+600000.

The project is officially finished and closed now. Two GFN-14 MEGA primes were found. Thank you!
13 Apr 2021, 6:11:15 UTC


GFN-13 MEGA Project will be started 2021-03-27

Next project in GFN-MEGA series, GFN-13 First MEGA Prime Search, will be started March 27, 2020, at 09:00 UTC. It replaces finished GFN-14 MEGA project. Please check a thread on PrimeGrid GFN Forum for full announcement and instructions.
27 Mar 2021, 6:37:10 UTC


We're on The Science Cloud!

GFN Server is now supported on The Science Cloud (TSC). TSC is a service where you can buy preconfigured Boinc virtual machines and attach them to supported Boinc servers with just a few mouse clicks. It's useful when running your own hardware can be costly due to high electricity/cooling prices, or if you just want to spend few bucks to give yourself or your team a boost in the challenge.
26 Mar 2021, 6:01:40 UTC


Missed PPS-MEGA Prime found!

The "LLR2 Testing" project, which is currently double-checking suspicious PPS-MEGA results from PrimeGrid, has found a missed 1014280-digits prime 65·23369359+1. Congratulations to Kellen!
27 Jan 2021, 18:26:00 UTC


New project - Search for small GFN primes

New GPU project, GFN-1x Small Primes, will be started January 21 2021 at 09:00 UTC

Please see PrimeGrid forum thread for full announcement.
19 Jan 2021, 12:30:52 UTC


GFN-14 Project is finished!

10 Jan 2021, last GFN-14 task (do not confuse with GFN-14 MEGA) was returned and validated!

GFN-14 was second public project on this server, started in October 2017. In these years, we did two-pass testing of all candidates up to 400M, finding 10143 new GFN-14 primes and double-checking 161 previously known. A list of known GFN-14 primes is updated.

Thank you very much - all of you who participated in this project! 10 Jan 2021, 12:55:33 UTC


GFN-14 MEGA Project will be started 2020-12-05

Next project in GFN-MEGA series, GFN-14 First MEGA Prime Search, will be started December 05, 2020, at 09:00 UTC.

Please check a thread on PrimeGrid GFN Forum for full announcement and instructions. 3 Dec 2020, 19:35:27 UTC


GFN-15 MEGA Project is finished!

02 Dec 2020, last GFN-15 MEGA workunit was returned and validated, finishing cleanup of the project at bmin+1000000.

The project is officially finished and closed now. Thank you! 1 Dec 2020, 21:40:40 UTC


GFN-15 MEGA Project will be started 2020-06-27

GFN-15 First MEGA Prime Search will be started June 27, 2020, at 12:00 UTC.

Please check a thread on PrimeGrid GFN Forum for full announcement and instructions. 26 Jun 2020, 21:31:59 UTC


GFN-16 Project is finished!

05 May 2020, last GFN-16 workunit was returned and validated, finishing cleanup of the project at bmin+310000.

The project is officially finished and closed now. Thank you! 6 May 2020, 19:02:16 UTC


GFN-13 Project is finished!

01 May 2020, last GFN-13 task was returned and validated!

GFN-13 was first public project on this server, started in October 2016. In these years, we did two-pass testing of all candidates up to 400M, finding 21201 new GFN-13 primes and double-checking 902 previously known.

Thank you very much - all of you who participated in this project! 3 May 2020, 12:36:22 UTC


A note to new users

Although all applications on this server will run out of box, some manual tweaking via app_config.xml is recommended for advanced users to get maximum performance out of fast modern GPUs and multi-core processors.

Please consider reading following posts on PrimeGrid forum (they include registration instructions and invitation code as well):

GFN-16 MEGA Prime Search (how to setup multi-threaded LLR);
GFN-13 / GFN-14 Prime Search (run 3-4 tasks in parallel to fully utilize modern GPUs). 2 Oct 2019, 12:11:11 UTC


GFN-16 First MEGA Prime search started March, 14, 2019

Please see PrimeGrid forum for description and instructions. 14 Mar 2019, 13:00:27 UTC


GFN-13 Consecutive Primes Hunt is complete

The GFN-13 Consecutive Primes search was completed 2019-02-26 in 63 days, finding one extra pair. Currently total of 3 pairs are known for GFN-13 in 0M-400M range.

We're running traditional search for primes on all remaning candidates of GFN-13 and GFN-14 now.
28 Feb 2019, 8:09:07 UTC






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