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
447581327Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
9712740124309713547372169.72019-02-15 13:42:29
History
DateUserTypeResult
2019-02-15ConductorF
Factor: 971274012430971354737 / TF: 69-70
2018-01-31sasakiNF
no factor from 2^68 to 2^69
2016-01-29sasakiNF
no factor from 2^66 to 2^68
2014-09-02sasaki3NF
no factor from 2^65 to 2^66