Marin Mersenne 2^P-1
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MnStatusDetails
275999Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
234047153927.8old
309602651047211444.82008-07-21 09:15:42
464070061259845963382734732447331101.92016-11-01 14:41:38
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000223 / 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 KruseB7501CB826F759533013
Verified2017-10-12Oliver KruseB7501CB826F75953318843713
Verified2017-11-06kkmrkkblmbrbkB7501CB826F75953316197513
Verified2020-04-17Oliver KruseCA19103621680E3631682653
Verified2024-08-05kkmrkkblmbrbkCA19103621680E36321368053
P-1 factors
DateFactorB1B2
2016-11-01464070061259845963382734732447350000000
History
DateUserTypeResult
2024-10-30yuriy_5-1NF-PM1
B1=25391908, B2=6224556508170
2024-08-05Luke DurantCERT
PRP Certification
Proof certified good
2024-08-05kkmrkkblmbrbkC-PRP
M275999/234047153/30960265104721/4640700612598459633827347324473 : CA19103621680E36
PRP proof power = 5
PRP: Verified
Proof certified good
2023-03-19Naegi MakotoNF-PM1
B1=6500000, B2=266201085150
2020-04-17Oliver KruseC-PRP
M275999/234047153/30960265104721/4640700612598459633827347324473 : CA19103621680E36
PRP: Verified
PRP without proof (small exponent)
2017-11-06kkmrkkblmbrbkC-PRP
M275999/234047153/30960265104721/4640700612598459633827347324473 : B7501CB826F75953
PRP: Verified
PRP without proof (small exponent)
2017-10-12Oliver KruseC-PRP
M275999/234047153/30960265104721/4640700612598459633827347324473 : B7501CB826F75953
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M275999/known_factors : B7501CB826F75953
PRP without proof (not generated)
2016-11-01kkmrkkblmbrbkF-PM1
Factor: 4640700612598459633827347324473 / (P-1, B1=5000000)
2008-07-21J FeitsmaF
Factor: 30960265104721