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
326693Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
4573703722.1old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000172 / 1566
Estimated T-Level: 30.5
TF below 2^96 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-22Oliver Kruse0C597E60857408CE1013
Verified2017-10-13Oliver Kruse0C597E60857408CE19338213
Verified2017-12-12ATH0C597E60857408CE125420913
Verified2020-04-18Oliver Kruse6ED15F3C7C57754E124016353
Verified2024-09-05kkmrkkblmbrbk6ED15F3C7C57754E17795353
History
DateUserTypeResult
2024-10-11yuriy_5-1NF-PM1
B1=12000002, B2=2107215910800
2024-09-05Jon PaceCERT
PRP Certification
Proof certified good
2024-09-05kkmrkkblmbrbkC-PRP
M326693/4573703 : 6ED15F3C7C57754E
PRP proof power = 5
PRP: Verified
Proof certified good
2023-03-20Denial140NF-PM1
B1=1000000, B2=20563492950
2022-02-06Lisander ViaeneNF-PM1
B1=50000
2020-04-18Oliver KruseC-PRP
M326693/4573703 : 6ED15F3C7C57754E
PRP: Verified
PRP without proof (small exponent)
2017-12-12ATHC-PRP
M326693/4573703 : 0C597E60857408CE
PRP: Verified
PRP without proof (small exponent)
2017-10-13Oliver KruseC-PRP
M326693/4573703 : 0C597E60857408CE
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M326693/4573703 : 0C597E60857408CE
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M326693/4573703 : 0C597E60857408CE
PRP without proof (not generated)