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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MnDetails
5016197
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 270
TF target 265
Factored
FactorDigitsBitsDate
150485911927.2old
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)
2017-11-21storm55105DDA3089C55B0517123276753
Verified
PRP without proof (not generated)
2018-01-13kkmrkkblmbrbk5DDA3089C55B05171255065053
History
DateUserTypeResult
2025-01-11Sid & AndyNF-PM1B1=5600000, B2=8313020562
2025-01-01Sid & AndyNFno factor TF: 68-70
2023-12-09USAFSSNF-PM1B1=234000, B2=100109940
2023-05-11This -Anonymous-NF-PM1B1=50000, B2=1000000
2018-01-13kkmrkkblmbrbkC-PRPM5016197/150485911 : 5DDA3089C55B0517
2017-11-21storm5510C-PRPM5016197/150485911 : 5DDA3089C55B0517