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12-04-17, 05:33 PM
On 3 December 2017, 06:30:24 UTC, PrimeGrid’s Generalized Fermat Prime Search found the Generalized Fermat mega prime:3673932^262144+1 (http://primes.utm.edu/primes/page.php?id=124044)The prime is 1,721,010 digits long and enters Chris Caldwell's The Largest Known Primes Database (http://primes.utm.edu/primes) ranked 6th for Generalized Fermat primes and 53rd overall.The discovery was made by Sean Humphries (No.15 (https://www.primegrid.com/show_user.php?userid=449361)) of the United States using an AMD Radeon RX Vega in an AMD Ryzen 7 1800X CPU with 32GB RAM, running Microsoft Windows 10 Professional Edition. This GPU took about 24 minutes to probable prime (PRP) test with GeneferOCL5. Sean is a member of the Overclock.net (http://www.primegrid.com/team_display.php?teamid=2353) team.The prime was verified on 3 December 2017, 07:29:36 UTC by Wolfgang Schwieger (DeleteNull (https://www.primegrid.com/show_user.php?userid=2663)) of Germany using an NVidia GeForce GTX Titan Black GPU in an Intel(R) Core(TM) i7-6700K CPU at 4.00GHz with 32GB RAM, running Linux. This GPU took about 27 minutes to probable prime (PRP) test with GeneferOCL5. Wolfgang is a member of the SETI.Germany (http://www.primegrid.com/team_display.php?teamid=11) 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 Edition. This computer took about 5 hours 45 minutes to complete the primality test using multithreaded LLR.For more details, please see the official announcement (http://www.primegrid.com/download/GFN-3673932_262144.pdf).
More... (http://www.primegrid.com/forum_thread.php?id=7737)
More... (http://www.primegrid.com/forum_thread.php?id=7737)