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
109397
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
23636315831031.1old
1034726282195771546.62008-07-26 09:17:10
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000752 / 1566
Estimated T-Level: 32.4
TF below 2^103 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Verified
No proof (small exponent)
2017-09-22Oliver Kruse28988668CC020D942013
Verified
No proof (small exponent)
2017-10-13kkmrkkblmbrbk28988668CC020D9421582913
Verified
No proof (small exponent)
2020-04-17Oliver KruseA2C338375E36B89F27934653
Verified
Not Uploaded
2022-04-15LordJuliusA2C338375E36B89F27241453
Verified
Certified Good
2022-11-11LordJuliusA2C338375E36B89F27730453
History
DateUserTypeResult
2026-02-10Jason LynchNF-PM1B1=421789000, B2=229148886256290
2025-12-16ViliamFNF-PM1B1=100000000, B2=2947421827350
2022-11-11Yves BellefeuilleCERT
Proof certified good
2022-11-11LordJuliusC-PRPM109397/2363631583/103472628219577 : A2C338375E36B89F
Proof Not Uploaded

Proof Power: 5

2022-05-07LordJuliusNFno factor TF: 62-63
2022-05-07LordJuliusNFno factor TF: 60-61
2022-05-07LordJuliusNFno factor TF: 61-62
2022-05-07LordJuliusNFno factor TF: 59-60
2022-05-07LordJuliusNFno factor TF: 57-58
2022-05-07LordJuliusNFno factor TF: 58-59
2022-04-15LordJuliusC-PRPM109397/2363631583/103472628219577 : A2C338375E36B89F
Proof Not Uploaded

Proof Power: 5

2020-04-17Oliver KruseC-PRPM109397/2363631583/103472628219577 : A2C338375E36B89F
2017-10-13kkmrkkblmbrbkC-PRPM109397/2363631583/103472628219577 : 28988668CC020D94
2017-09-22Oliver KruseC-PRPM109397/2363631583/103472628219577 : 28988668CC020D94
2017-09-21Oliver KruseC-PRPM109397/2363631583/103472628219577 : 28988668CC020D94
2016-12-10kkmrkkblmbrbkNF-PM1B1=100000000, B2=2000000000, E=12
2008-07-26J FeitsmaF-PM1Factor: 103472628219577