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
208333813Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
1421763779044721388412166.92015-10-10 10:17:00
History
DateUserTypeResult
2015-10-10NickF
Factor: 142176377904472138841 / TF: 66-67
2013-08-06Dalos LeeNF
no factor from 2^65 to 2^66
2011-05-13OS1NF
no factor from 2^64 to 2^65