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
667508503Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
4919569637523202375432168.72018-03-10 18:42:49
History
DateUserTypeResult
2018-03-10ConductorF
Factor: 491956963752320237543 / TF: 68-69
2017-02-14sasakiNF
no factor from 2^67 to 2^68
2014-05-14sasakiNF
no factor from 2^66 to 2^67
2013-04-16ramgeisNF
no factor from 2^65 to 2^66
2011-10-24laleraNF
no factor from 2^64 to 2^65
2010-06-05Architects CubedNF
no factor from 2^63 to 2^64