Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
2241539Factored
FactorDigitsBitsDate
2585109148863012471857.8old
616963703152510050044849992685.72022-06-21 20:54:46
ECM
DigitsB1Curves
255000090 / 280
Estimated T-Level: 21.6
TF below 2^67 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)The Grebelius Family6C91A38E3733F71D0
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-10-10Oliver Kruse0D9420CCDA0156A21013
Verified (Factored)2017-11-20kkmrkkblmbrbk0D9420CCDA0156A2138590613
Verified2022-06-27mrh991DA7EF132B26E6277838353
Verified2022-07-25 some-students991DA7EF132B26E6255864753
History
DateUserTypeResult
2022-07-25Chad Steenerson CERT
PRP Certification
Proof certified good
2022-07-25 some-studentsC-PRP
M2241539/258510914886301247/61696370315251005004484999 : 991DA7EF132B26E6
PRP proof power = 7
PRP: Verified
Proof certified good
2022-06-27IC_9CERT
PRP Certification
Proof certified good
2022-06-27mrhC-PRP
M2241539/258510914886301247/61696370315251005004484999 : 991DA7EF132B26E6
PRP proof power = 7
PRP: Verified
Proof certified good
2022-06-21debrouxlF-ECM
Factor: 61696370315251005004484999 / (ECM curve 1, B1=50000, B2=6500000, Sigma=260557089610131)
2017-11-20kkmrkkblmbrbkC-PRP
M2241539/258510914886301247 : 0D9420CCDA0156A2
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-10Oliver KruseC-PRP
M2241539/258510914886301247 : 0D9420CCDA0156A2
PRP: Verified (Factored)
PRP without proof (not generated)
2016-04-24alpertronNF-PM1
B1=500000, B2=15000000, E=12