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
220742927Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
1267670787151277550492166.82015-10-26 23:55:32
History
DateUserTypeResult
2015-10-26demfloroF
Factor: 126767078715127755049 / TF: 66-68
2013-08-30RichardNF
no factor from 2^65 to 2^66
2011-06-05Charles A. MorrisNF
no factor from 2^64 to 2^65