Marin Mersenne 2^P-1
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MnStatusDetails
266051Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
119976953160690840771672373.32008-07-08 14:05:04
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000187 / 1566
Estimated T-Level: 30.6
TF below 2^97 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David Slowinski40360
Verified (Factored)Unknown40360
Verified (Factored)Brian J. BeesleyE7A940E2CBBBC0360
Verified (Factored)Eivind TrielE7A940E2CBBBC03621335
Verified (Factored)2001-10-27Brian J. BeesleyE7A940E2CBBBC036196222
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-22Oliver KruseCFFF743A5ACFF84E1013
Verified2017-10-12kkmrkkblmbrbkCFFF743A5ACFF84E115707213
Verified2020-04-17Oliver Kruse1A832D9C39B1BDC6126164453
Verified2024-08-01kkmrkkblmbrbk1A832D9C39B1BDC613717653
History
DateUserTypeResult
2024-08-01SchwaCERT
PRP Certification
Proof certified good
2024-08-01kkmrkkblmbrbkC-PRP
M266051/11997695316069084077167 : 1A832D9C39B1BDC6
PRP proof power = 5
PRP: Verified
Proof certified good
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2021-06-28George WoltmanNF-PP1
Start=2/7, B1=10000000, B2=830000000
2021-06-28George WoltmanNF-PM1
B1=20000000, B2=1820000000
2020-04-17Oliver KruseC-PRP
M266051/11997695316069084077167 : 1A832D9C39B1BDC6
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M266051/11997695316069084077167 : CFFF743A5ACFF84E
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M266051/11997695316069084077167 : CFFF743A5ACFF84E
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M266051/11997695316069084077167 : CFFF743A5ACFF84E
PRP without proof (not generated)
2008-07-08CorbyguyF-ECM
Factor: 11997695316069084077167