Marin Mersenne 2^P-1
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MnStatusDetails
485977Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
144743389691133.8old
6402027524929671549.22008-09-30 13:18:12
21791766610515991032558948792890.82020-06-29 11:32:06
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
Verified (Factored)2017-09-26Oliver KruseEB8E64A9C927B04C2013
Verified (Factored)2017-09-27Oliver KruseEB8E64A9C927B04C2013
Verified (Factored)2017-11-09kkmrkkblmbrbkEB8E64A9C927B04C222999713
Verified (Factored)2020-04-18Oliver Kruse81EA9A33B0FED88E240613253
Verified2020-06-29M Miller81EA9A33B0FED88E320533653
History
DateUserTypeResult
2024-08-22cramsey87NF-PM1
B1=7000000, B2=42834594660
2020-06-29M MillerC-PRP
M485977/14474338969/640202752492967/2179176661051599103255894879 : 81EA9A33B0FED88E
PRP: Verified
PRP without proof (small exponent)
2020-06-29TJAOIF-ECM
Factor: 2179176661051599103255894879 / (ECM curve 1, B1=250000, B2=25000000)
2020-04-18Oliver KruseC-PRP
M485977/14474338969/640202752492967 : 81EA9A33B0FED88E
PRP: Verified
PRP without proof (small exponent)
2017-11-09kkmrkkblmbrbkC-PRP
M485977/14474338969/640202752492967 : EB8E64A9C927B04C
PRP: Verified
PRP without proof (small exponent)
2017-09-27Oliver KruseC-PRP
M485977/14474338969/640202752492967 : EB8E64A9C927B04C
PRP: Verified
PRP without proof (not generated)
2017-09-26Oliver KruseC-PRP
M485977/14474338969/640202752492967 : EB8E64A9C927B04C
PRP: Verified
PRP without proof (not generated)
2008-09-30markrF
Factor: 640202752492967