PrimeGrid Fermat Number Divisor

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Congratulations to Eric Embling (Eric E (http://www.primegrid.com/show_user.php?userid=35693)) of the United States, the discoverer of PrimeGrid's third Fermat Number divisor in the Proth Prime Search project: 659*2^617815+1 Divides F(617813). It is the 3rd found Fermat Number divisor of 2009 and 273rd overall. It is the 6th largest Fermat Number divisor in Chris Caldwell's The Largest Known Primes Database. Incidentally, it is a new record for "weighted" Fermat Number divisors. For more information, please see this forum post (http://www.primegrid.com/forum_thread.php?id=1161&nowrap=true#14635).

More... (http://www.primegrid.com/forum_thread.php?id=2434)