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
647846581Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
5032618852517221153612168.82016-09-10 07:57:58
History
DateUserTypeResult
2016-09-10NipalF
Factor: 503261885251722115361 / TF: 67-70
2014-06-15sasakiNF
no factor from 2^66 to 2^67
2014-03-19america64NF
no factor from 2^65 to 2^66