Marin Mersenne 2^P-1
Username
Password
Forgot password?
Black
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
193980461Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
5565261620415478555372168.92015-09-08 13:55:37
History
DateUserTypeResult
2015-09-08demfloroF
Factor: 556526162041547855537 / TF: 68-69
2015-09-08demfloroNF
no factor from 2^66 to 2^68
2013-06-22RichardNF
no factor from 2^65 to 2^66
2011-04-18Sergej LevinNF
no factor from 2^64 to 2^65
2010-08-05Torchwood InstituteNF
no factor from 2^63 to 2^64