Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
208561007Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
2152059226514980362012167.52015-10-17 00:55:14
History
DateUserTypeResult
2015-10-17demfloroF
Factor: 215205922651498036201 / TF: 66-68
2013-08-09RichardNF
no factor from 2^65 to 2^66
2011-05-13PiepenNF
no factor from 2^64 to 2^65