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
235181Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
12530443691030.2old
136985632481771443.62008-07-21 09:14:34
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000191 / 1566
Estimated T-Level: 30.6
TF below 2^97 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-22Oliver KruseD4C3D59EDF8EBD0E2013
Verified2017-10-12kkmrkkblmbrbkD4C3D59EDF8EBD0E219564113
Verified2020-04-17Oliver KruseCC5A59C115A96512219070253
Verified2024-02-03Wentao HuangCC5A59C115A9651223741453
History
DateUserTypeResult
2024-02-03Naegi MakotoCERT
PRP Certification
Proof certified good
2024-02-03Wentao HuangC-PRP
M235181/1253044369/13698563248177 : CC5A59C115A96512
PRP proof power = 5
PRP: Verified
Proof certified good
2022-03-30Oliver KruseNF-PM1
B1=30000000, B2=10120247026890
2021-07-07Oliver KruseNF-PM1
B1=30000000, B2=3000000000, E=24
2020-04-17Oliver KruseC-PRP
M235181/1253044369/13698563248177 : CC5A59C115A96512
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M235181/1253044369/13698563248177 : D4C3D59EDF8EBD0E
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M235181/1253044369/13698563248177 : D4C3D59EDF8EBD0E
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M235181/1253044369/13698563248177 : D4C3D59EDF8EBD0E
PRP without proof (not generated)
2008-07-21J FeitsmaF
Factor: 13698563248177