Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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Exponent Range:










MnStatusDetails
211373Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
141704459211133.7old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000181 / 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 KruseA734A647E951A8811013
Verified2017-10-12kkmrkkblmbrbkA734A647E951A881115633613
Verified2020-04-17Oliver KruseE125A3F4B72E8FD9121002353
Verified2023-08-03USAFSSE125A3F4B72E8FD911054453
History
DateUserTypeResult
2023-08-03curtiscCERT
PRP Certification
Proof certified good
2023-08-03USAFSSC-PRP
M211373/14170445921 : E125A3F4B72E8FD9
PRP proof power = 5
PRP: Verified
Proof certified good
2022-02-19Oliver KruseNF-PM1
B1=30000000, B2=10070832992220
2021-05-18Oliver KruseNF-PM1
B1=30000000, B2=3000000000
2020-04-17Oliver KruseC-PRP
M211373/14170445921 : E125A3F4B72E8FD9
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M211373/14170445921 : A734A647E951A881
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M211373/14170445921 : A734A647E951A881
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M211373/14170445921 : A734A647E951A881
PRP without proof (not generated)