Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
277871689Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
15611886275124548755372270.42019-10-21 17:46:41
History
DateUserTypeResult
2019-10-21ConductorF
Factor: 1561188627512454875537 / TF: 70-71
2019-09-15proxy2222NF
no factor from 2^69 to 2^70
2018-07-09Chabot PrimeNF
no factor from 2^68 to 2^69
2016-11-07el groccoNF
no factor from 2^67 to 2^68
2016-01-14mikeblasNF
no factor from 2^66 to 2^67
2013-12-08Mr-PlonkNF
no factor from 2^65 to 2^66
2011-09-09oodairaNF
no factor from 2^64 to 2^65
2010-04-07Lars FrickeNF
no factor from 2^63 to 2^64
2010-04-04Lars FrickeNF
no factor from 2^62 to 2^63