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
262873393Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
2497216806628336278172167.82015-12-17 09:21:34
History
DateUserTypeResult
2015-12-17ConductorF
Factor: 249721680662833627817 / TF: 67-68
2014-03-04riccardo ubertiNF
no factor from 2^66 to 2^67
2013-11-20subgeniusNF
no factor from 2^65 to 2^66
2011-08-15tscNF
no factor from 2^64 to 2^65
2010-03-17smokyNF
no factor from 2^63 to 2^64
2010-03-17smokyNF
no factor from 2^62 to 2^63