Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
195557147Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
9821772221805268125432169.72015-09-14 01:55:13
History
DateUserTypeResult
2015-09-14demfloroF
Factor: 982177222180526812543 / TF: 69-70
2015-09-14demfloroNF
no factor from 2^68 to 2^69
2015-09-14demfloroNF
no factor from 2^66 to 2^68
2013-06-28RichardNF
no factor from 2^65 to 2^66
2011-04-22EPFNF
no factor from 2^64 to 2^65
2010-08-07Cedric VonckNF
no factor from 2^63 to 2^64