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
207141937Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
1233086542108779587212166.72015-10-07 09:11:18
History
DateUserTypeResult
2015-10-07ConductorF
Factor: 123308654210877958721 / TF: 66-67
2013-09-06riccardo ubertiNF
no factor from 2^65 to 2^66
2011-05-10Charles A. MorrisNF
no factor from 2^64 to 2^65