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
195206507Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
38900833203666492891592271.72016-12-19 21:26:14
History
DateUserTypeResult
2016-12-19Sergey NosovF
Factor: 3890083320366649289159 / TF: 68-72*
2016-08-12Mr-PlonkNF
no factor from 2^67 to 2^68
2015-09-11BrandonNF
no factor from 2^66 to 2^67
2013-06-23Lukin DmitryNF
no factor from 2^65 to 2^66
2011-04-20dslNF
no factor from 2^64 to 2^65
2010-08-06jonthomsonNF
no factor from 2^63 to 2^64