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
447273521Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
8217122750223947040492169.52019-02-02 12:46:50
History
DateUserTypeResult
2019-02-02ConductorF
Factor: 821712275022394704049 / TF: 69-70
2018-01-27sasakiNF
no factor from 2^68 to 2^69
2016-02-03sasakiNF
no factor from 2^66 to 2^68
2014-09-02firereddNF
no factor from 2^65 to 2^66
2011-11-25lindedNF
no factor from 2^64 to 2^65
2010-03-21Architects CubedNF
no factor from 2^63 to 2^64