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
447475993Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
6531521927226694730392169.12019-02-09 17:32:48
History
DateUserTypeResult
2019-02-09ConductorF
Factor: 653152192722669473039 / TF: 69-70
2018-01-28sasakiNF
no factor from 2^68 to 2^69
2016-02-10sasakiNF
no factor from 2^66 to 2^68
2014-09-02burnst2_souNF
no factor from 2^65 to 2^66