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

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Exponent Range:










MnStatusDetails
464143Factored
FactorDigitsBitsDate
64752505971525552942892272.52009-10-27 09:19:00
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.
LL
StatusDateUserResidueShift
Verified (Factored)Alex and Nick Myrman32DF0
Verified (Factored)Jean-Charles Meyrignac55B63F1CBD9632DF0
Verified (Factored)Cornelius Caesar55B63F1CBD9632DF0
Verified (Factored)Eivind Triel55B63F1CBD9632DF328534
Verified (Factored)1997-11-11Jon Grantham55B63F1CBD9632DF0
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-25Oliver KruseD781B43F81360BBE1013
Verified2017-09-27Oliver KruseD781B43F81360BBE1013
Verified2017-11-07kkmrkkblmbrbkD781B43F81360BBE141492413
Unverified (Reliable)2020-04-18Oliver Kruse48AEF1D572C8E2__119466053
History
DateUserTypeResult
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2020-04-18Oliver KruseC-PRP
M464143/6475250597152555294289 : 48AEF1D572C8E2__
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-11-07kkmrkkblmbrbkC-PRP
M464143/6475250597152555294289 : D781B43F81360BBE
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-09-27Oliver KruseC-PRP
M464143/6475250597152555294289 : D781B43F81360BBE
PRP: Unverified (Reliable)
PRP without proof (not generated)
2017-09-25Oliver KruseC-PRP
M464143/6475250597152555294289 : D781B43F81360BBE
PRP: Unverified (Reliable)
PRP without proof (not generated)
2009-10-27JimBaF-ECM
Factor: 6475250597152555294289
2009-08-26Carsten KossendeyNF-PM1
B1=464143