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
320712671Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
1628481313019388980632167.12016-12-26 13:31:33
History
DateUserTypeResult
2016-12-26NickF
Factor: 162848131301938898063 / TF: 67-68
2016-02-29ANONYMOUSNF
no factor from 2^66 to 2^67
2014-01-29ANONYMOUSNF
no factor from 2^65 to 2^66
2011-11-05sasaki3NF
no factor from 2^64 to 2^65