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
538206191Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
957528399296073658312066.42015-11-08 13:28:59
History
DateUserTypeResult
2015-11-08Alexander DubrovinF
Factor: 95752839929607365831 / TF: 66-67
2014-11-06sasakiNF
no factor from 2^65 to 2^66