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
195553223Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
5664255391127877077832168.92015-09-12 13:55:19
History
DateUserTypeResult
2015-09-12demfloroF
Factor: 566425539112787707783 / TF: 68-69
2015-09-12demfloroNF
no factor from 2^66 to 2^68
2013-06-24sasaki3NF
no factor from 2^65 to 2^66
2011-04-21dslNF
no factor from 2^64 to 2^65
2010-08-12KikamonjuNF
no factor from 2^63 to 2^64