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
207256043Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
1394006237641849161132166.92015-10-20 12:35:32
History
DateUserTypeResult
2015-10-20ConductorF
Factor: 139400623764184916113 / TF: 66-67
2013-08-03Grant McCrackenNF
no factor from 2^65 to 2^66
2011-05-10sasaki3NF
no factor from 2^64 to 2^65