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
197455537Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
2225976371696996356012167.62015-09-19 08:55:08
History
DateUserTypeResult
2015-09-19demfloroF
Factor: 222597637169699635601 / TF: 66-68
2013-07-01gucsNF
no factor from 2^65 to 2^66
2011-04-24sasaki3NF
no factor from 2^64 to 2^65
2010-08-08Mr-PlonkNF
no factor from 2^63 to 2^64