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02-23-17, 08:13 AM
On 23 February 2017, 02:20:15 UTC, PrimeGrid’s Generalized Fermat Prime Search found the Generalized Fermat mega prime:45315256^131072+1 (http://primes.utm.edu/primes/page.php?id=123040)The prime is 1,003,520 digits long and enters Chris Caldwell's The Largest Known Primes Database (http://primes.utm.edu/primes) ranked 20th for Generalized Fermat primes and 223rd overall.The discovery was made by William Donovan (Williamd007 (https://www.primegrid.com/show_user.php?userid=76891)) of the United States using an NVIDIA GeForce GTX 1070 in an Intel(R) Core(TM) i7-6700K CPU @ 4.00GHz with 16GB RAM, running Microsoft Windows 10 Core Edition. This GPU took about 9 minutes to probable prime (PRP) test with GeneferOCL4. William is a member of The Knights Who Say Ni! (http://www.primegrid.com/team_display.php?teamid=16) team.The prime was verified on 23 February 2017, 06:00:13 UTC by Andrea Tosatto (Andrea Tosatto - Italy (https://www.primegrid.com/show_user.php?userid=400080)) of Italy using an Intel(R) Core(TM)2 Duo CPU @ 3.00GHz with 2GB RAM, running Microsoft Windows 7 Professional Edition. This computer took about 9 hours 17 minutes to complete the probable prime (PRP) test. The PRP was confirmed prime by an Intel(R) Core(TM) i7-7700K CPU @ 4.20GHz with 16GB RAM, running Windows 10 Professional Edition. This computer took about 1 hour 17 minutes to complete the primality test using LLR.For more details, please see the official announcement (http://www.primegrid.com/download/GFN-45315256_131072.pdf).
More... (http://www.primegrid.com/forum_thread.php?id=7309)
More... (http://www.primegrid.com/forum_thread.php?id=7309)