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
197450509Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
2915748267407008860232168.02015-09-17 16:55:06
History
DateUserTypeResult
2015-09-17demfloroF
Factor: 291574826740700886023 / TF: 66-68
2013-07-03Luigi R.NF
no factor from 2^65 to 2^66
2011-04-24dslNF
no factor from 2^64 to 2^65
2010-08-08sasaki3NF
no factor from 2^63 to 2^64