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
2288687Factored
FactorDigitsBitsDate
58112856704214805931962.32010-01-05 18:17:42
ECM
DigitsB1Curves
255000080 / 280
Estimated T-Level: 21.4
TF below 2^66 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
BadGabriel OthmezouriE46911135F0DF79C0
Verified (Factored)1999-05-23arnaud6D24B13FBA078F34918325
Verified (Factored)1999-09-07Damon Michaels6D24B13FBA078F341300798
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-12kkmrkkblmbrbk9D1C2FE0203EB2CD1227138253
Verified2017-10-30Oliver Kruse9D1C2FE0203EB2CD173579353
History
DateUserTypeResult
2017-10-30Oliver KruseC-PRP
M2288687/5811285670421480593 : 9D1C2FE0203EB2CD
PRP: Verified
PRP without proof (not generated)
2017-10-12kkmrkkblmbrbkC-PRP
M2288687/5811285670421480593 : 9D1C2FE0203EB2CD
PRP: Verified
PRP without proof (not generated)
2016-04-19alpertronNF-PM1
B1=500000, B2=15000000, E=12
2010-01-05SubPrimeF-ECM
Factor: 5811285670421480593
2009-01-11Sturle SundeNF
no factor from 2^60 to 2^61