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:










MnStatusDetails
1896173Factored
FactorDigitsBitsDate
1327727298180071546.9old
22748559845863584194712270.92020-08-02 09:08:38
ECM
DigitsB1Curves
2550000280 / 280
30250000107 / 640
Estimated T-Level: 25.8
TF below 2^81 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-10-04Oliver Kruse2596563B0135F5491013
Verified (Factored)2017-11-09kkmrkkblmbrbk2596563B0135F5491114462713
Verified2020-08-03LOBESB3513EAA3D01EAE52166856653
Verified2020-08-03ATHB3513EAA3D01EAE52123903153
History
DateUserTypeResult
2022-08-30USAFSSNF-PM1
B1=651000, B2=730452492
2022-04-12Lisander ViaeneNF-PM1
B1=500100
2020-08-03ATHC-PRP
M1896173/132772729818007/2274855984586358419471 : B3513EAA3D01EAE5
PRP: Verified
PRP without proof (not generated)
2020-08-03LOBESC-PRP
M1896173/132772729818007/2274855984586358419471 : B3513EAA3D01EAE5
PRP: Verified
PRP without proof (not generated)
2020-08-02_p95holder_F-ECM
Factor: 2274855984586358419471 / (ECM curve 3, B1=50000, B2=5000000)
2017-11-09kkmrkkblmbrbkC-PRP
M1896173/132772729818007 : 2596563B0135F549
PRP: Verified
PRP without proof (not generated)
2017-10-04Oliver KruseC-PRP
M1896173/132772729818007 : 2596563B0135F549
PRP: Verified
PRP without proof (not generated)