PrimeGrid GFN-131072 Mega Prime!

[Newshound]

On 29 May 2017, 07:16:40 UTC, PrimeGrid’s Generalized Fermat Prime Search found the Generalized Fermat mega prime:

46371508^131072+1

The prime is 1,004,831 digits long and enters Chris Caldwell's The Largest Known Primes Database ranked 23rd for Generalized Fermat primes and 235th overall.

The discovery was made by Mike Kinney (Mektacular) of the United States using an NVIDIA GeForce GTX 950 in an Intel(R) Xeon(R) E5-2670 CPU at 2.60GHz with 64GB RAM, running Microsoft Windows 10 Professional Edition. This GPU took about 21 minutes to probable prime (PRP) test with GeneferOCL2. Mike is a member of the Crunching@EVGA team.

The prime was verified on 29 May 2017, 14:11:46 UTC by Matt Jurach (mattozan) of the United States using an NVIDIA GeForce GTX 460 in an Intel(R) Core(TM)2 Duo CPU E8400 @ 3.00GHz with 8GB RAM, running Microsoft Windows 7 Ultimate Edition. This GPU took about 36 minutes to probable prime (PRP) test with GeneferOCL2. Matt is a member of the Aggie The Pew team.

The PRP was confirmed prime by an Intel(R) Core(TM) i7-7700K CPU @ 4.20GHz with 16GB RAM, running Microsoft Windows 10 Professional. This computer took about 2 hours 41 minutes to complete the primality test using LLR.

For more details, please see the official announcement.


http://www.primegrid.com/forum_thread.php?id=7469