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
256656353Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
1354855393463348351692166.92015-12-21 20:50:17
History
DateUserTypeResult
2015-12-21Alex_soldierF
Factor: 135485539346334835169 / TF: 66-67
2013-11-18Gordon SpenceNF
no factor from 2^65 to 2^66
2011-08-04OS1NF
no factor from 2^64 to 2^65
2010-03-09Architects CubedNF
no factor from 2^63 to 2^64
2010-03-09Architects CubedNF
no factor from 2^62 to 2^63