Free-DC
05-09-2016, 12:33 PM
On 4 May 2016, 10:57:07 UTC, PrimeGrid’s Generalized Fermat Prime Search found the Generalized Fermat mega prime: 1615588^262144+1 (https://primes.utm.edu/primes/page.php?id=121619) The prime is 1,627,477 digits long and enters Chris Caldwell's The Largest Known Primes Database (http://primes.utm.edu/primes) ranked 5th for Generalized Fermat primes and 44th overall. The discovery was made by Brook Harste (brinktastee (http://www.primegrid.com/show_user.php?userid=32401)) of the United States using an NVIDIA GeForce GTX 980 Ti in an Intel(R) Core(TM) i7-3820 CPU @ 3.60GHz with 16GB RAM, running Microsoft Windows 10 Professional. This GPU took about 17 minutes to probable prime (PRP) test with GeneferOCL4. Brook is a member of the Aggie The Pew (http://www.primegrid.com/team_display.php?teamid=2280) team. The prime was verified on 8 May 2016, 15:28:12 UTC by Róbert Borbély (SosRud (http://www.primegrid.com/show_user.php?userid=137849)) of Hungary using an AMD Cypress in an Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz with 16GB RAM, running Microsoft Windows 10 Professional. This GPU took about 1 hour and 36 minutes to probable prime (PRP) test with GeneferOCL4. For more details, please see the official announcement (http://www.primegrid.com/download/GFN-1615588_262144.pdf).
More... (http://www.primegrid.com/forum_thread.php?id=6803)
More... (http://www.primegrid.com/forum_thread.php?id=6803)