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:





MnDetails
2268449
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 262
Factored
FactorDigitsBitsDate
1280811674391236.9old
ECM
DigitsB1Curves
2550000280 / 280
30250000158 / 640
Estimated T-Level: 26.2 ⓘ
TF below 2^82 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
PRP without proof (not generated)
2017-10-10Oliver Kruse7AF5AE0B45FB3D9F1013
Verified
PRP without proof (not generated)
2017-11-21storm55107AF5AE0B45FB3D9F127850413
History
DateUserTypeResult
2017-11-21storm5510C-PRPM2268449/128081167439 : 7AF5AE0B45FB3D9F
2017-10-10Oliver KruseC-PRPM2268449/128081167439 : 7AF5AE0B45FB3D9F
2016-04-25alpertronNF-PM1B1=500000, B2=15000000, E=12