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
247139173Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
5515718755536489701692168.92018-06-03 06:42:34
History
DateUserTypeResult
2018-06-03YxinityF
Factor: 551571875553648970169 / TF: 68-69
2016-10-17rubikvn2100NF
no factor from 2^67 to 2^68
2015-12-11Math_is_pureNF
no factor from 2^66 to 2^67
2013-10-29Lukin DmitryNF
no factor from 2^65 to 2^66
2011-07-21ALSNF
no factor from 2^64 to 2^65