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
221229649Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
1237334855619829090492166.72015-10-30 14:23:38
History
DateUserTypeResult
2015-10-30ConductorF
Factor: 123733485561982909049 / TF: 66-67
2013-08-30RichardNF
no factor from 2^65 to 2^66
2011-06-06sasaki3NF
no factor from 2^64 to 2^65