Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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Exponent Range:





MnDetails
2262191
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 262
Factored
FactorDigitsBitsDate
18097529824.1old
ECM
DigitsB1Curves
2550000280 / 280
30250000147 / 640
Estimated T-Level: 26.1 ⓘ
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)
2017-10-11Oliver Kruse2A9A12BCD10797861013
Verified
PRP without proof (not generated)
2017-11-21storm55102A9A12BCD1079786125117513
History
DateUserTypeResult
2017-11-21storm5510C-PRPM2262191/18097529 : 2A9A12BCD1079786
2017-10-11Oliver KruseC-PRPM2262191/18097529 : 2A9A12BCD1079786
2016-04-18alpertronNF-PM1B1=500000, B2=15000000, E=12