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
619856521Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
6344242440340873902012169.12016-09-22 04:10:36
History
DateUserTypeResult
2016-09-22NipalF
Factor: 634424244034087390201 / TF: 67-70
2014-03-13sasakiNF
no factor from 2^65 to 2^67