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
9643Composite, with 4 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
12362327823.6old
617478923959643797454143728492995.6old
4573357364721366690723123959513098.5old
142378923051741138889497676864062178337120.1old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
50440000006809 / 16550
Estimated T-Level: 47.1
TF below 2^151 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver Kruse5F934A16195DF4144013
Verified2017-10-02kkmrkkblmbrbk5F934A16195DF4144013
Verified2017-12-07ATH5F934A16195DF4144565713
Verified2020-04-17Oliver KruseCD4927545AD45EC34832453
Verified2024-07-01kkmrkkblmbrbkCD4927545AD45EC34685453
History
DateUserTypeResult
2024-07-01kkmrkkblmbrbkC-PRP
M9643/12362327/1423789230517411388894976768640621783/457335736472136669072312395951/61747892395964379745414372849 : CD4927545AD45EC3
PRP: Verified
PRP without proof (small exponent)
2023-06-20JacobZNF-PM1
B1=60000000000, B2=244568457101868900
2022-02-03-Anonymous-NF-PM1
B1=50000, B2=15277839797220
2020-04-17Oliver KruseC-PRP
M9643/12362327/61747892395964379745414372849/457335736472136669072312395951/1423789230517411388894976768640621783 : CD4927545AD45EC3
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M9643/12362327/61747892395964379745414372849/457335736472136669072312395951/1423789230517411388894976768640621783 : 5F934A16195DF414
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M9643/12362327/61747892395964379745414372849/457335736472136669072312395951/1423789230517411388894976768640621783 : 5F934A16195DF414
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M9643/known_factors : 5F934A16195DF414
PRP without proof (not generated)