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06-01-17, 07:41 AM
On 31 May 2017, 09:22:45 UTC, PrimeGrid’s Generalized Fermat Prime Search found the Generalized Fermat mega prime:46385310^131072+1 (http://primes.utm.edu/primes/page.php?id=123439)The prime is 1,004,848 digits long and enters Chris Caldwell's The Largest Known Primes Database (http://primes.utm.edu/primes) ranked 23rd for Generalized Fermat primes and 235th overall.The discovery was made by Matt Jurach (mattozan (http://www.primegrid.com/show_user.php?userid=90031)) of the United States using an AMD Pitcairn GPU in an Intel(R) Core(TM) i7-5820K CPU at 3.30GHz with 16GB RAM, running Microsoft Windows 7 Enterprise Edition. This GPU took about 42 minutes to probable prime (PRP) test with GeneferOCL2. Matt is a member of the Aggie The Pew (http://www.primegrid.com/team_display.php?teamid=2280) team.The prime was verified on 31 May 2017, 22:53:40 UTC by Krzysztof Ostaszewski (Krzysiak_PL_GDA (https://www.primegrid.com/show_user.php?userid=67376)) of Poland using an AMD R9 Fury Series GPU in an Intel(R) Xeon(R) E5-2683 v3 CPU at 2.00GHz with 32GB RAM, running Microsoft Windows 10 Professional Edition. This GPU took about 11 minutes to probable prime (PRP) test with GeneferOCL2. Krzysztof is a member of the BOINC@Poland (http://www.primegrid.com/team_display.php?teamid=2) 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 52 minutes to complete the primality test using LLR.For more details, please see the official announcement (http://www.primegrid.com/download/GFN-46385310_131072.pdf).
More... (http://www.primegrid.com/forum_thread.php?id=7472)
More... (http://www.primegrid.com/forum_thread.php?id=7472)