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

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MnStatusDetails
210037Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
356222753928.4old
565350119559671445.72008-07-21 09:13:57
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000527 / 1566
Estimated T-Level: 31.7
TF below 2^100 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-22Oliver Kruse6813996214C015072013
Verified2017-10-12kkmrkkblmbrbk6813996214C01507219325613
Verified2020-04-17Oliver Kruse2B01912A440B7972212612953
Verified2023-08-03USAFSS2B01912A440B797225175753
History
DateUserTypeResult
2023-08-03Chad Steenerson CERT
PRP Certification
Proof certified good
2023-08-03USAFSSC-PRP
M210037/356222753/56535011955967 : 2B01912A440B7972
PRP proof power = 5
PRP: Verified
Proof certified good
2022-02-17Oliver KruseNF-PM1
B1=30000000, B2=10070832992220
2021-11-28fbaurNF-PP1
Start=6/5, B1=150000000, B2=14250000000
2021-11-27fbaurNF-PP1
Start=2/7, B1=150000000, B2=14400000000
2021-05-16Oliver KruseNF-PM1
B1=30000000, B2=3000000000
2020-04-17Oliver KruseC-PRP
M210037/356222753/56535011955967 : 2B01912A440B7972
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M210037/356222753/56535011955967 : 6813996214C01507
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M210037/356222753/56535011955967 : 6813996214C01507
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M210037/356222753/56535011955967 : 6813996214C01507
PRP without proof (not generated)
2008-07-21J FeitsmaF
Factor: 56535011955967