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
919770191Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
818709662568035895592066.12015-10-17 08:24:56
History
DateUserTypeResult
2015-10-17ConductorF
Factor: 81870966256803589559 / TF: 66-67
2013-06-02ramgeisNF
no factor from 2^65 to 2^66
2011-01-14oerwinNF
no factor from 2^64 to 2^65
2010-06-21lindedNF
no factor from 2^63 to 2^64