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
5091761
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 270
TF target 265
Factored
FactorDigitsBitsDate
926700503929.8old
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1
TF below 2^62 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Verified
PRP without proof (not generated)
2017-09-20kkmrkkblmbrbk7CBE05B09E8A2C1F1013
Verified
PRP without proof (not generated)
2018-05-06storm55107CBE05B09E8A2C1F1261549713
History
DateUserTypeResult
2025-01-29Sid & AndyNF-PM1B1=3600000, B2=9117768660
2025-01-23Sid & AndyNFno factor TF: 68-70
2023-05-11This -Anonymous-NF-PM1B1=50000, B2=1000000
2018-05-06storm5510C-PRPM5091761/926700503 : 7CBE05B09E8A2C1F
2017-09-20kkmrkkblmbrbkC-PRPM5091761/926700503 : 7CBE05B09E8A2C1F