Marin Mersenne 2^P-1
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MnStatusDetails
311137Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
20473882913780471650.9old
390538260719586069089817432685.02015-10-30 13:19:41
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000207 / 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 Kruse2D972AE86B8AAF662013
Verified2017-10-12Oliver Kruse2D972AE86B8AAF662163813
Verified2017-12-11ATH2D972AE86B8AAF6623789213
Verified2020-04-18Oliver Kruse4588EABC901893AF218924853
Verified2024-08-27kkmrkkblmbrbk4588EABC901893AF215460953
History
DateUserTypeResult
2024-09-19yuriy_5-1NF-PM1
B1=12000002, B2=1704299857260
2024-08-27Luke DurantCERT
PRP Certification
Proof certified good
2024-08-27kkmrkkblmbrbkC-PRP
M311137/2047388291378047/39053826071958606908981743 : 4588EABC901893AF
PRP proof power = 5
PRP: Verified
Proof certified good
2023-03-18Denial140NF-PM1
B1=1000000, B2=65871826020
2022-02-06Lisander ViaeneNF-PM1
B1=50000
2020-04-18Oliver KruseC-PRP
M311137/2047388291378047/39053826071958606908981743 : 4588EABC901893AF
PRP: Verified
PRP without proof (small exponent)
2017-12-11ATHC-PRP
M311137/2047388291378047/39053826071958606908981743 : 2D972AE86B8AAF66
PRP: Verified
PRP without proof (small exponent)
2017-10-12Oliver KruseC-PRP
M311137/2047388291378047/39053826071958606908981743 : 2D972AE86B8AAF66
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M311137/known_factors : 2D972AE86B8AAF66
PRP without proof (not generated)
2015-10-30TJAOIF-ECM
Factor: 39053826071958606908981743 / (ECM curve 77, B1=50000, B2=5000000)