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
287003993Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
1966855548972828940872167.42016-11-02 13:09:27
History
DateUserTypeResult
2016-11-02ConductorF
Factor: 196685554897282894087 / TF: 67-68
2016-01-29tscNF
no factor from 2^66 to 2^67
2013-12-17tscNF
no factor from 2^65 to 2^66
2011-09-24tscNF
no factor from 2^64 to 2^65
2010-04-12oodairaNF
no factor from 2^63 to 2^64
2010-04-12oodairaNF
no factor from 2^62 to 2^63