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
2271637
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 262
Factored
FactorDigitsBitsDate
490673593928.9old
ECM
DigitsB1Curves
2550000280 / 280
30250000270 / 640
Estimated T-Level: 27.1 ⓘ
TF below 2^85 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
PRP without proof (not generated)
2017-10-11Oliver KruseB7F736FEA6F0613A1013
Verified
PRP without proof (not generated)
2017-11-21storm5510B7F736FEA6F0613A1185610513
History
DateUserTypeResult
2017-11-21storm5510C-PRP
M2271637/490673593 : B7F736FEA6F0613A
2017-10-11Oliver KruseC-PRPM2271637/490673593 : B7F736FEA6F0613A
2016-04-28alpertronNF-PM1B1=500000, B2=15000000, E=12