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
2260273
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 262
Factored
FactorDigitsBitsDate
784224320091136.2old
ECM
DigitsB1Curves
2550000280 / 280
30250000163 / 640
Estimated T-Level: 26.3
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 Kruse6B64682EC1678AF11013
Verified
PRP without proof (not generated)
2017-11-21storm55106B64682EC1678AF11161263013
History
DateUserTypeResult
2017-11-21storm5510C-PRPM2260273/78422432009 : 6B64682EC1678AF1
2017-10-10Oliver KruseC-PRPM2260273/78422432009 : 6B64682EC1678AF1
2016-04-16alpertronNF-PM1B1=500000, B2=15000000, E=12