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Message boards : News : Fermat Number Divisor

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Rytis
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Message 23595 - Posted: 7 Mar 2009 | 3:40:00 UTC

Congratulations to Senji Yamashita (s-yama) of Japan, the discoverer of PrimeGrid's second Fermat Number divisor in the Proth Prime Search project: 519*2^567235+1 Divides Fermat F(567233). It is only the 2nd found Fermat Number divisor of 2009 and 272nd overall. It is the 7th 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.

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Message boards : News : Fermat Number Divisor

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