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
209358923Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
1791699624960611806392167.32016-09-05 01:31:44
History
DateUserTypeResult
2016-09-05demfloroF
Factor: 179169962496061180639 / TF: 67-68
2015-10-12subgeniusNF
no factor from 2^66 to 2^67
2013-08-10David CampeauNF
no factor from 2^65 to 2^66
2011-05-16Charles A. MorrisNF
no factor from 2^64 to 2^65