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
198685259Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
12550316332202570499672270.12015-09-23 01:55:12
History
DateUserTypeResult
2015-09-23demfloroF
Factor: 1255031633220257049967 / TF: 70-71
2015-09-23demfloroNF
no factor from 2^69 to 2^70
2015-09-23demfloroNF
no factor from 2^68 to 2^69
2015-09-23demfloroNF
no factor from 2^66 to 2^68
2013-07-06Lukin DmitryNF
no factor from 2^65 to 2^66
2011-04-26sasaki3NF
no factor from 2^64 to 2^65
2010-09-031997rj7NF
no factor from 2^63 to 2^64