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11-01-17, 10:42 AM
On 30 October 2017, 01:31:18 UTC, PrimeGrid’s Generalized Fermat Prime Search found the Generalized Fermat mega prime: 3547726^262144+1 (http://primes.utm.edu/primes/page.php?id=123974) The prime is 1,717,031 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 Scott Brown (Scott Brown (https://www.primegrid.com/show_user.php?userid=1178)) of the United States using a Nvidia GeForce GTX 1080 Ti in an Intel(R) Xeon(R) E5-1650 v3 CPU at 3.50GHz with 32GB RAM, running Microsoft Windows 7 Enterprise Edition. This GPU took about 17 minutes to probable prime (PRP) test with GeneferOCL3. Scott is a member of the Aggie The Pew (http://www.primegrid.com/team_display.php?teamid=2280) team. The prime was verified on 30 October 2017, 11:31:11 UTC by Alexander Falk (Alexander Falk (https://www.primegrid.com/show_user.php?userid=444490)) of the United States using an NVidia GeForce GTX 1080 GPU in an Intel(R) Core(TM) i7-7700K CPU at 4.20GHz with 64GB RAM, running Microsoft Windows 10 Professional Edition. This GPU took about 18 minutes to probable prime (PRP) test with GeneferOCL3. Alexander is a member of The Knights Who Say Ni! (http://www.primegrid.com/team_display.php?teamid=16) team. The PRP was confirmed prime by an Intel(R) Core(TM) i5-4670K CPU @ 3.40GHz with 24GB RAM, running Microsoft Windows 7 Professional Edition. This computer took about 12 hours 30 minutes to complete the primality test using multithreaded LLR. For more details, please see the official announcement (http://www.primegrid.com/download/GFN-3547726_262144.pdf).
More... (http://www.primegrid.com/forum_thread.php?id=7679)
More... (http://www.primegrid.com/forum_thread.php?id=7679)