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
539261Factored
FactorDigitsBitsDate
133878908534881121032063.52009-07-27 09:29:35
ECM
DigitsB1Curves
2550000280 / 280
30250000200 / 640
Estimated T-Level: 26.6 ⓘ
TF below 2^83 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David Slowinski10500
Verified (Factored)Charles F. Kerchner III7ACA45EF1E8AD0500
Verified (Factored)Klaus Kastens7ACA45EF1E8AD050495629
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-27Oliver KruseDE26F16DA54FBF4C1013
Verified2017-11-03kkmrkkblmbrbkDE26F16DA54FBF4C134184213
Unverified (Reliable)2020-04-19Oliver Kruse9136BFAFE5FC01__122370553
History
DateUserTypeResult
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2021-08-11ViliamFNF-PM1
B1=15000000, B2=1665000000
2020-04-19Oliver KruseC-PRP
M539261/13387890853488112103 : 9136BFAFE5FC01__
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-11-03kkmrkkblmbrbkC-PRP
M539261/13387890853488112103 : DE26F16DA54FBF4C
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-09-27Oliver KruseC-PRP
M539261/13387890853488112103 : DE26F16DA54FBF4C
PRP: Unverified (Reliable)
PRP without proof (not generated)
2016-03-16alpertronNF-PM1
B1=1500000, B2=50000000, E=12
2009-07-27JimBaF-ECM
Factor: 13387890853488112103