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

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Exponent Range:










MnStatusDetails
7126841Factored
FactorDigitsBitsDate
2022991993430626166572167.52018-07-24 09:46:42
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)MIT dept. of Univ. of Jyvaskyla4AAFC28E9ED4B8A50
Verified (Factored)1999-05-02Joe Decker4AAFC28E9ED4B8A52902247
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2018-07-26_p95holder_B1369F767D9347EC1112539553
Verified2019-03-22Chang Chia-TcheB1369F767D9347EC1529492153
History
DateUserTypeResult
2019-03-22Chang Chia-TcheC-PRP
M7126841/202299199343062616657 : B1369F767D9347EC
PRP: Verified
PRP without proof (not generated)
2018-07-26_p95holder_C-PRP
M7126841/202299199343062616657 : B1369F767D9347EC
PRP: Verified
PRP without proof (not generated)
2018-07-24ramgeisF
Factor: 202299199343062616657 / 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
2014-02-08lycornNF
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