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
320187821Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
2813533491524627745132167.92016-12-20 11:49:05
History
DateUserTypeResult
2016-12-20SarnetskyF
Factor: 281353349152462774513 / TF: 67-68*
2016-02-27Dave BellNF
no factor from 2^66 to 2^67
2014-01-28Chih-Wei HuangNF
no factor from 2^65 to 2^66
2011-11-04sasaki3NF
no factor from 2^64 to 2^65