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

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MnStatusDetails
2901559Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
4089464448841446971858.5old
6462645317658117799932169.12018-05-26 09:55:43
ECM
DigitsB1Curves
255000081 / 280
Estimated T-Level: 21.4
TF below 2^66 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-10-24Oliver Kruse9BC17D7346CBF7F91228045753
Verified (Factored)2017-12-08kkmrkkblmbrbk9BC17D7346CBF7F9117341353
Verified2018-05-28ANONYMOUS9BC17D7346CBF7F92224776353
Verified2018-05-28King9BC17D7346CBF7F9244467853
History
DateUserTypeResult
2022-09-10USAFSSNF-PM1
B1=280000, B2=212023350
2018-05-28KingC-PRP
M2901559/408946444884144697/646264531765811779993 : 9BC17D7346CBF7F9
PRP: Verified
PRP without proof (not generated)
2018-05-28ANONYMOUSC-PRP
M2901559/408946444884144697/646264531765811779993 : 9BC17D7346CBF7F9
PRP: Verified
PRP without proof (not generated)
2018-05-26Martin RussellF-ECM
Factor: 646264531765811779993 / (ECM curve 2, B1=50000, B2=5000000)
2017-12-08kkmrkkblmbrbkC-PRP
M2901559/408946444884144697 : 9BC17D7346CBF7F9
PRP: Verified
PRP without proof (not generated)
2017-10-24Oliver KruseC-PRP
M2901559/408946444884144697 : 9BC17D7346CBF7F9
PRP: Verified
PRP without proof (not generated)