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01-12-2018, 08:48 AM
On 10 January 2018, 12:26:12 UTC, PrimeGrid’s Generalized Fermat Prime Search found the Generalized Fermat mega prime:3853792^262144+1 (http://primes.utm.edu/primes/page.php?id=124118)The prime is 1,726,452 digits long and enters Chris Caldwell's The Largest Known Primes Database (http://primes.utm.edu/primes) ranked 6th for Generalized Fermat primes and 55th overall.The discovery was made by Rod Skinner (rjs5 (https://www.primegrid.com/show_user.php?userid=87238)) of the United States using an NVIDIA GeForce GTX 1080 in an Intel(R) Core(TM) i7-8700K CPU at 3.70GHz with 16GB RAM, running Linux. This GPU took about 18 minutes to probable prime (PRP) test with GeneferOCL3. Rod is a member of the Intel Corporation (http://www.primegrid.com/team_display.php?teamid=631) 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 6 hours 59 minutes to complete the primality test using LLR.For more details, please see the official announcement (http://www.primegrid.com/download/GFN-3853792_262144.pdf).
More... (http://www.primegrid.com/forum_thread.php?id=7797)
More... (http://www.primegrid.com/forum_thread.php?id=7797)