Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
9161Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
86901247826.4old
121878493671133.5old
9931549805985144215637645446023930107528744273747156.12024-10-23 19:35:29
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
50440000006315 / 16550
Estimated T-Level: 46.9
TF below 2^151 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-21Oliver Kruse406775237858987B2013
Verified (Factored)2017-10-12kkmrkkblmbrbk406775237858987B2367813
Verified (Factored)2020-04-17Oliver Kruse2E86579D0003BB202304153
Verified (Factored)2024-07-01kkmrkkblmbrbk2E86579D0003BB202839053
Verified2024-10-23nordi2E86579D0003BB203394953
History
DateUserTypeResult
2024-10-23nordiC-PRP
M9161/86901247/12187849367/99315498059851442156376454460239301075287442737 : 2E86579D0003BB20
PRP: Verified
PRP without proof (small exponent)
2024-10-23nordiF-ECM
Factor: 99315498059851442156376454460239301075287442737 / (ECM curve 1837, B1=44000000, B2=1117403522235, Edwards Sigma=3709909251253533)
2024-07-01kkmrkkblmbrbkC-PRP
M9161/12187849367/86901247 : 2E86579D0003BB20
PRP: Verified
PRP without proof (small exponent)
2023-07-13JacobZNF-PM1
B1=63000000000, B2=255469764292442700
2021-12-16Lisander ViaeneNF-PM1
B1=100000000
2020-04-17Oliver KruseC-PRP
M9161/86901247/12187849367 : 2E86579D0003BB20
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M9161/86901247/12187849367 : 406775237858987B
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M9161/86901247/12187849367 : 406775237858987B
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M9161/86901247/12187849367 : 406775237858987B
PRP without proof (not generated)