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03-09-11, 04:42 PM
On 08 Mar 2011 10:35:34 UTC, PrimeGrid’s PRPNet found a Generalized Fermat mega prime: 40734^262144+1 (http://primes.utm.edu/primes/page.php?id=99092) The prime is 1,208,473 digits long and enters Chris Caldwell's The Largest Known Primes Database (http://primes.utm.edu/primes) ranked 2nd for Generalized Fermat Primes (http://primes.utm.edu/top20/page.php?id=12) and 26th overall. The discovery was made by Senji Yamashita of Japan using an Intel Core 2 Quad Q9450 @ 2.66GHz with 2GB RAM, running Windows 7 Professional 64bit. This computer took 4 hours and 29 minutes to complete the primality test using pfgw64. Senji is a member of the PrimeSearchTeam (http://www.primegrid.com/team_display.php?teamid=696). For more details, please see the official announcement (http://www.primegrid.com/download/gfn-40734_262144.pdf).
More... (http://www.primegrid.com/forum_thread.php?id=3198)
More... (http://www.primegrid.com/forum_thread.php?id=3198)