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
248792549Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
2647258848260235024172167.82016-10-20 21:42:15
History
DateUserTypeResult
2016-10-20Mikhail E. GolosovF
Factor: 264725884826023502417 / TF: 67-68
2015-12-14el groccoNF
no factor from 2^66 to 2^67
2014-04-28tscNF
no factor from 2^65 to 2^66
2011-07-23Damian SilvestreNF
no factor from 2^64 to 2^65