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Index :: News :: 2011-03-09: PrimeGrid - Generalized Fermat Mega Prime (3988)


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2011-03-10 03:00:23

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On 08 Mar 2011 10:35:34 UTC, PrimeGrid's PRPNet found a Generalized Fermat mega prime: <b><a href="http://primes.utm.edu/primes/page.php?id=99092" rel="nofollow">40734^262144+1</a></b>

The prime is 1,208,473 digits long and enters Chris Caldwell's <b><a href="http://primes.utm.edu/primes" rel="nofollow">The Largest Known Primes Database</a></b> ranked 2nd for <b><a href="http://primes.utm.edu/top20/page.php?id=12" rel="nofollow">Generalized Fermat Primes</a></b> and 26th overall.

The discovery was made by <b>Senji Yamashita</b> 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 <b><a href="http://www.primegrid.com/team_display.php?teamid=696" rel="nofollow">PrimeSearchTeam</a></b>.

For more details, please see the <b><a href="http://www.primegrid.com/download/gfn-40734_262144.pdf" rel="nofollow">official announcement</a></b>.
http://www.primegrid.com/forum_thread.php?id=3198
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