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
5016731
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 270
TF target 265
Factored
FactorDigitsBitsDate
401338481928.6old
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)
2017-11-21storm5510F07F1359EACF0A3E1115191453
Verified
PRP without proof (not generated)
2018-01-12kkmrkkblmbrbkF07F1359EACF0A3E1131387453
History
DateUserTypeResult
2025-01-12Sid & AndyNF-PM1B1=5600000, B2=8313020562
2025-01-01Sid & AndyNFno factor TF: 68-70
2024-08-30cramsey87NF-PM1B1=1000000, B2=2020317390
2023-05-11This -Anonymous-NF-PM1B1=50000, B2=1000000
2018-01-12kkmrkkblmbrbkC-PRPM5016731/401338481 : F07F1359EACF0A3E
2017-11-21storm5510C-PRPM5016731/401338481 : F07F1359EACF0A3E