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
278624387Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
1732598710642280374972167.22016-11-08 01:45:20
History
DateUserTypeResult
2016-11-08Mikhail E. GolosovF
Factor: 173259871064228037497 / TF: 67-68
2016-01-15KayJongsmaNF
no factor from 2^66 to 2^67
2013-12-09Mr-PlonkNF
no factor from 2^65 to 2^66
2011-09-11ALSNF
no factor from 2^64 to 2^65
2010-04-07RichardNF
no factor from 2^63 to 2^64
2010-04-07RichardNF
no factor from 2^62 to 2^63