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

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Exponent Range:










MnStatusDetails
419141Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
499425237102711445.5old
274311970087078605192064.62014-11-28 10:27:38
ECM
DigitsB1Curves
2550000280 / 280
30250000275 / 640
Estimated T-Level: 27.1
TF below 2^85 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-23Oliver KruseEB64A76475A6D3982013
Verified2017-09-24Oliver KruseEB64A76475A6D3982013
Verified2017-11-07kkmrkkblmbrbkEB64A76475A6D398240589013
Verified2020-04-18Oliver Kruse87EFA5B0A0AEB078232928553
Verified2024-10-26kkmrkkblmbrbk87EFA5B0A0AEB078219244653
History
DateUserTypeResult
2024-10-26ky0urakuCERT
PRP Certification
Proof certified good
2024-10-26kkmrkkblmbrbkC-PRP
M419141/49942523710271/27431197008707860519 : 87EFA5B0A0AEB078
PRP proof power = 5
PRP: Verified
Proof certified good
2024-03-16USAFSSNF-PM1
B1=380000, B2=1341673410
2020-04-18Oliver KruseC-PRP
M419141/49942523710271/27431197008707860519 : 87EFA5B0A0AEB078
PRP: Verified
PRP without proof (small exponent)
2017-11-07kkmrkkblmbrbkC-PRP
M419141/49942523710271/27431197008707860519 : EB64A76475A6D398
PRP: Verified
PRP without proof (small exponent)
2017-09-24Oliver KruseC-PRP
M419141/49942523710271/27431197008707860519 : EB64A76475A6D398
PRP: Verified
PRP without proof (not generated)
2017-09-23Oliver KruseC-PRP
M419141/49942523710271/27431197008707860519 : EB64A76475A6D398
PRP: Verified
PRP without proof (not generated)
2014-11-28TJAOIF-ECM
Factor: 27431197008707860519