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
5972959Factored
FactorDigitsBitsDate
281470572924309361132064.62011-07-02 23:06:59
ECM
DigitsB1Curves
25500003 / 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)1998-10-25Guy HedleyCE66B8F429650A3B0
Verified (Factored)2000-12-21Michel ClaesCE66B8F429650A3B1301591
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-12-12trebor1F97A0DB9AEF81FD1194219653
Verified2018-04-26kkmrkkblmbrbk1F97A0DB9AEF81FD1340304353
History
DateUserTypeResult
2018-04-26kkmrkkblmbrbkC-PRP
M5972959/28147057292430936113 : 1F97A0DB9AEF81FD
PRP: Verified
PRP without proof (not generated)
2017-12-12treborC-PRP
M5972959/28147057292430936113 : 1F97A0DB9AEF81FD
PRP: Verified
PRP without proof (not generated)
2011-07-02JimBaF-ECM
Factor: 28147057292430936113
2010-12-09Squeeky_SquirrelNF-PM1
B1=70000, B2=1155000, E=6