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
2277941
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 262
Factored
FactorDigitsBitsDate
124556872589219991753.5old
ECM
DigitsB1Curves
2550000280 / 280
30250000122 / 640
Estimated T-Level: 26.0
TF below 2^81 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 Kruse4BE6D5A78728B5F51013
Verified
PRP without proof (not generated)
2017-11-21storm55104BE6D5A78728B5F51206944813
History
DateUserTypeResult
2017-11-21storm5510C-PRPM2277941/12455687258921999 : 4BE6D5A78728B5F5
2017-10-11Oliver KruseC-PRPM2277941/12455687258921999 : 4BE6D5A78728B5F5
2016-04-08alpertronNF-PM1B1=500000, B2=15000000, E=12