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06-07-17, 04:21 PM
On 4 June 2017, 04:02:39 UTC, PrimeGrid’s Generalized Fermat Prime Search found the Generalized Fermat mega prime:46413358^131072+1 (http://primes.utm.edu/primes/page.php?id=123457)The prime is 1,004,883 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 Sagi Iltus (sagiil (https://www.primegrid.com/show_user.php?userid=456643)) of Israel using an Intel(R) Xeon(R) E5-2673 v3 CPU at 2.40GHz with 8GB RAM, running Linux. This CPU took about 7 hours 4 minutes to probableprime (PRP) test with Genefer. The prime was verified on 7 June 2017, 18:18:37 UTC by Dirk Broer (Dirk Broer (https://www.primegrid.com/show_user.php?userid=72063)) of the British Virgin Islands using an AMD Athlon(TM) 5350 APU with 16GB RAM, running Microsoft Windows 10 Professional Edition. This GPU took about 4 hours 1 minute to probable prime (PRP) test with GeneferOCL2. Dirk is a member of the AMD Users (http://www.primegrid.com/team_display.php?teamid=14) team.The PRP was confirmed prime by an Intel(R) Xeon (R) E5-2670 CPU CPU @ 2.60GHz with 32GB RAM, running Linux. This computer took about 15 hours 21 minutes to complete the primality test using LLR.For more details, please see the official announcement (http://www.primegrid.com/download/GFN-46413358_131072.pdf).
More... (http://www.primegrid.com/forum_thread.php?id=7484)
More... (http://www.primegrid.com/forum_thread.php?id=7484)