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
193985273Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
837198972887774303112066.22015-09-09 13:55:25
History
DateUserTypeResult
2015-09-09demfloroF
Factor: 83719897288777430311 / TF: 66-68
2013-06-19Grant McCrackenNF
no factor from 2^65 to 2^66
2011-04-18megavinkNF
no factor from 2^64 to 2^65
2010-08-08RichardNF
no factor from 2^63 to 2^64