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
191220899Composite: 2 known prime factors
Factored
FactorDigitsBitsDate
1496919138834653090872167.02015-08-31 05:55:08
3435174705672663879132168.22025-05-09 08:18:01
History
DateUserTypeResult
2025-05-09TJAOIF
Factor: 343517470567266387913 / TF: 68-69
2015-08-31demfloroF
Factor: 149691913883465309087 / TF: 66-68
2013-06-08tscNF
no factor from 2^65 to 2^66
2011-04-12dslNF
no factor from 2^64 to 2^65
2010-08-04RichardNF
no factor from 2^63 to 2^64