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03-30-16, 01:16 AM
On 5 March 2016, 18:56:52 UTC, PrimeGrid’s Generalized Fermat Prime Search found the Generalized Fermat mega prime:1488256^262144+1 (https://primes.utm.edu/primes/page.php?id=121375)The prime is 1,618,131 digits long and enters Chris Caldwell's The Largest Known Primes Database (http://primes.utm.edu/primes) ranked 5th for Generalized Fermat primes and 43rd overall.The discovery was made by Stefan Larsson (288larsson (http://www.primegrid.com/show_user.php?userid=58815)) of Sweden using an AMD Hawaii in an Intel(R) Core(TM) i5-4670K CPU @ 3.40GHz with 8GB RAM, running Linux. This GPU took about 27 minutes to probable prime (PRP) test with GeneferOCL4. Stefan is a member of the Sicituradastra. (http://www.primegrid.com/team_display.php?teamid=1596) team.The prime was verified on 5 March 2016, 19:25:40 UTC by Dirk Kraemer (DoctorNow (http://www.primegrid.com/show_user.php?userid=2121)) of Germany using an NVIDIA GeForce GTX 760 in an AMD Phenom(tm) II X6 1045T Processor with 12GB RAM, running Windows Vista Home Premium. This GPU took about 1 hour and 5 minutes to probable prime (PRP) test with GeneferOCL3. Dirk is a member of the BOINC Confederation (http://www.primegrid.com/team_display.php?teamid=13) team.For more details, please see the official announcement (http://www.primegrid.com/download/GFN-1488256_262144.pdf).
More... (http://www.primegrid.com/forum_thread.php?id=6736)
More... (http://www.primegrid.com/forum_thread.php?id=6736)