Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

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MnStatusDetails
628000147Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
728174673416313384378972375.92019-11-24 18:40:40
History
DateUserTypeResult
2019-11-24mikrF
Factor: 72817467341631338437897 / TF: 75-76*
2019-11-24mikrNF
no factor from 2^74 to 2^75
2019-11-24mikrNF
no factor from 2^73 to 2^74
2019-11-24mikrNF
no factor from 2^72 to 2^73
2019-11-24mikrNF
no factor from 2^71 to 2^72
2017-04-22Smok_bmv NF
no factor from 2^69 to 2^71
2017-03-29sasakiNF
no factor from 2^68 to 2^69
2016-11-27ConductorNF
no factor from 2^67 to 2^68
2014-05-11sasakiNF
no factor from 2^65 to 2^67