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
447686611Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
6566437939090028236012169.22019-02-18 20:14:54
History
DateUserTypeResult
2019-02-18ConductorF
Factor: 656643793909002823601 / TF: 69-70
2018-02-02sasakiNF
no factor from 2^68 to 2^69
2016-02-03sasakiNF
no factor from 2^66 to 2^68
2014-09-03Schultz7676NF
no factor from 2^65 to 2^66