Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
398225543Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
405314008893133851532065.12014-06-04 11:02:48
History
DateUserTypeResult
2014-06-04NickF
Factor: 40531400889313385153
2010-05-09Architects CubedNF
no factor from 2^64 to 2^65