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
2971603Factored
FactorDigitsBitsDate
4535372721904033519043735592788.62021-11-11 07:29:33
ECM
DigitsB1Curves
255000098 / 280
Estimated T-Level: 21.8 ⓘ
TF below 2^67 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)John Fray50DAC4B5769843E80
Verified (Factored)1999-08-07Kevin Marvel50DAC4B5769843E8461926
Verified (Factored)2018-10-18kkmrkkblmbrbk50DAC4B5769843E81528450
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2021-11-11SRJ2877712ECEF63DDEF5191162445153
History
DateUserTypeResult
2021-11-11rushynCERT
PRP Certification
Proof certified good
2021-11-11SRJ2877C-PRP
M2971603/453537272190403351904373559 : 712ECEF63DDEF519
PRP proof power = 7
PRP: Verified
Proof certified good
2021-11-11daveward2005F-ECM
Factor: 453537272190403351904373559 / (ECM curve 2, B1=50000, B2=5000000, Sigma=8471969618475200)
2021-05-17TJAOINF
no factor from 2^68 to 2^69
2018-12-25chuenkitNF
no factor from 2^67 to 2^68
2018-10-18kkmrkkblmbrbkC-LL
50DAC4B5769843E8
2017-12-03Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-28ramgeisNF
no factor from 2^65 to 2^66
2015-05-08VictordeHollanderNF-PM1
B1=1000000, B2=20000000, E=12
2015-04-29VictordeHollanderNF
no factor from 2^64 to 2^65
2015-04-29VictordeHollanderNF
no factor from 2^63 to 2^64
2013-01-07dbaughNF
no factor from 2^62 to 2^63
2011-11-29Sebastian HornbostelNF
no factor from 2^61 to 2^62
2010-10-27markrNF-PM1
B1=95000, B2=1995000, E=6
2009-02-12Sturle SundeNF
no factor from 2^60 to 2^61