Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
7131983Factored
FactorDigitsBitsDate
2799328307253483380472167.92018-07-25 09:08:03
ECM
DigitsB1Curves
25500006 / 280
Estimated T-Level: 20.1
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1999-07-26Giovambattista CicioniB45BB1533EFA295A3370680
Verified (Factored)2002-02-17Dave WintripB45BB1533EFA295A2717047
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2018-07-27_p95holder_B2ABB51A34BF055D1360619653
Verified2019-03-23kkmrkkblmbrbkB2ABB51A34BF055D1436480353
History
DateUserTypeResult
2019-03-23kkmrkkblmbrbkC-PRP
M7131983/279932830725348338047 : B2ABB51A34BF055D
PRP: Verified
PRP without proof (not generated)
2018-07-27_p95holder_C-PRP
M7131983/279932830725348338047 : B2ABB51A34BF055D
PRP: Verified
PRP without proof (not generated)
2018-07-25ramgeisF
Factor: 279932830725348338047 / TF: 67-68*
2016-10-22Gordon SpenceNF
no factor from 2^66 to 2^67
2015-06-21VictordeHollanderNF
no factor from 2^65 to 2^66
2014-02-07lycornNF
no factor from 2^64 to 2^65
2014-02-02NesowaNF
no factor from 2^63 to 2^64
2011-12-21James HeinrichNF-PM1
B1=135000, B2=2902500, E=6