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

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MnStatusDetails
191222639Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
4209522169238996278492168.52015-08-31 12:55:22
History
DateUserTypeResult
2015-08-31demfloroF
Factor: 420952216923899627849 / TF: 68-69
2015-08-31demfloroNF
no factor from 2^66 to 2^68
2013-06-08sasaki3NF
no factor from 2^65 to 2^66
2011-04-13RichardNF
no factor from 2^64 to 2^65
2010-08-03Mr-PlonkNF
no factor from 2^63 to 2^64