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
163381021Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
1205133055524543869272166.72015-05-15 10:05:15
History
DateUserTypeResult
2015-05-15Alex_soldierF
Factor: 120513305552454386927 / TF: 66-67
2013-03-05GrunwalderGIMPNF
no factor from 2^65 to 2^66
2011-02-07runeskNF
no factor from 2^64 to 2^65
2010-07-02Torchwood InstituteNF
no factor from 2^63 to 2^64