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
538216543Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
744612589674455819532066.02015-11-26 09:44:58
History
DateUserTypeResult
2015-11-26Alexander DubrovinF
Factor: 74461258967445581953 / TF: 66-67
2014-11-06sasakiNF
no factor from 2^65 to 2^66