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

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Exponent Range:










MnStatusDetails
233293Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
120535999369473232064225212683.32008-01-05 07:50:19
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000215 / 1566
Estimated T-Level: 30.7
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 Kruse41FB1039AC3A11E31013
Verified2017-10-12kkmrkkblmbrbk41FB1039AC3A11E3111718613
Verified2020-04-17Oliver Kruse170CEE28582E7C581444453
Verified2024-02-03Wentao Huang170CEE28582E7C58121368953
History
DateUserTypeResult
2024-02-03Naegi MakotoCERT
PRP Certification
Proof certified good
2024-02-03Wentao HuangC-PRP
M233293/12053599936947323206422521 : 170CEE28582E7C58
PRP proof power = 5
PRP: Verified
Proof certified good
2022-03-28Oliver KruseNF-PM1
B1=30000000, B2=10070832992220
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2021-07-01Oliver KruseNF-PM1
B1=30000000, B2=3000000000, E=24
2020-04-17Oliver KruseC-PRP
M233293/12053599936947323206422521 : 170CEE28582E7C58
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M233293/12053599936947323206422521 : 41FB1039AC3A11E3
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M233293/12053599936947323206422521 : 41FB1039AC3A11E3
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M233293/12053599936947323206422521 : 41FB1039AC3A11E3
PRP without proof (not generated)
2008-01-05Steve ScottF-ECM
Factor: 12053599936947323206422521