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

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MnStatusDetails
487349Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
446785804234001111755.3old
77560541169786055131962.82015-05-22 10:23:19
ECM
DigitsB1Curves
2550000280 / 280
30250000200 / 640
Estimated T-Level: 26.6
TF below 2^83 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-26Oliver Kruse9AF85E0C99822BB52013
Verified2017-09-27Oliver Kruse9AF85E0C99822BB52013
Verified2017-11-09kkmrkkblmbrbk9AF85E0C99822BB5210930413
Verified2020-04-18Oliver Kruse5394488B83EC200921933253
Verified2024-11-27kkmrkkblmbrbk5394488B83EC2009232797453
History
DateUserTypeResult
2024-11-27XyzzyCERT
PRP Certification
Proof certified good
2024-11-27kkmrkkblmbrbkC-PRP
M487349/44678580423400111/7756054116978605513 : 5394488B83EC2009
PRP proof power = 6
PRP: Verified
Proof certified good
2020-04-18Oliver KruseC-PRP
M487349/44678580423400111/7756054116978605513 : 5394488B83EC2009
PRP: Verified
PRP without proof (small exponent)
2017-11-09kkmrkkblmbrbkC-PRP
M487349/44678580423400111/7756054116978605513 : 9AF85E0C99822BB5
PRP: Verified
PRP without proof (small exponent)
2017-09-27Oliver KruseC-PRP
M487349/44678580423400111/7756054116978605513 : 9AF85E0C99822BB5
PRP: Verified
PRP without proof (not generated)
2017-09-26Oliver KruseC-PRP
M487349/44678580423400111/7756054116978605513 : 9AF85E0C99822BB5
PRP: Verified
PRP without proof (not generated)
2015-05-22TJAOIF-ECM
Factor: 7756054116978605513 / (ECM curve 42, B1=50000, B2=5000000)