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
207321071Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
915285019028768389032066.32015-10-21 20:23:21
History
DateUserTypeResult
2015-10-21ConductorF
Factor: 91528501902876838903 / TF: 66-67
2013-08-03MucolNF
no factor from 2^65 to 2^66
2011-05-11huber_roberto NF
no factor from 2^64 to 2^65