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
247267087Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
1668747144154923347532167.22016-10-17 23:32:00
History
DateUserTypeResult
2016-10-17Mikhail E. GolosovF
Factor: 166874714415492334753 / TF: 67-68
2015-12-12MurraySNF
no factor from 2^66 to 2^67
2013-10-29MucolNF
no factor from 2^65 to 2^66
2011-07-23alan145NF
no factor from 2^64 to 2^65