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
1071379Factored
FactorDigitsBitsDate
4222499295386338311858.62007-09-26 06:38:15
ECM
DigitsB1Curves
2550000280 / 280
30250000100 / 640
Estimated T-Level: 25.8 ⓘ
TF below 2^81 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David Slowinski1C720
Verified (Factored)Scott FluhrerB15767415158FC720
Verified (Factored)2002-03-03S57483B15767415158FC72774373
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-28Oliver KruseDFADB81CDB38E1B41013
Verified2017-10-19kkmrkkblmbrbkDFADB81CDB38E1B4120979813
History
DateUserTypeResult
2024-03-16cramsey87NF-PM1
B1=2000000, B2=20195017920
2017-10-19kkmrkkblmbrbkC-PRP
M1071379/422249929538633831 : DFADB81CDB38E1B4
PRP: Verified
PRP without proof (not generated)
2017-09-28Oliver KruseC-PRP
M1071379/422249929538633831 : DFADB81CDB38E1B4
PRP: Verified
PRP without proof (not generated)
2007-09-26Chad DavisF-ECM
Factor: 422249929538633831