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

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MnStatusDetails
2479691Factored
FactorDigitsBitsDate
7752982714944437828538249112789.32014-10-29 04:05:27
ECM
DigitsB1Curves
255000067 / 280
Estimated T-Level: 21.2
TF below 2^65 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Tan Loe Joo6D420D211871B96F0
Verified (Factored)1999-05-23Mike McCarthy6D420D211871B96F1475281
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-14Oliver Kruse3EA13A43ADE06679122911653
Verified2017-11-29kkmrkkblmbrbk3EA13A43ADE06679199593353
P-1 factors
DateFactorB1B2
2014-10-29775298271494443782853824911238250085770100
History
DateUserTypeResult
2022-03-10LordJuliusNF
no factor from 2^1 to 2^60
2019-07-04alpertronNF-PM1
B1=2000000, B2=60000000, E=12
2017-11-29kkmrkkblmbrbkC-PRP
M2479691/775298271494443782853824911 : 3EA13A43ADE06679
PRP: Verified
PRP without proof (not generated)
2017-10-14Oliver KruseC-PRP
M2479691/775298271494443782853824911 : 3EA13A43ADE06679
PRP: Verified
PRP without proof (not generated)
2014-10-29mikrF-PM1
Factor: 775298271494443782853824911 / (P-1, B1=2382500, B2=85770100, E=12)
2014-09-02JossNF-PM1
B1=120884
2013-01-23dbaughNF
no factor from 2^62 to 2^63
2012-06-09Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-01-20Oscar ÖstlinNF-PM1
B1=95000, B2=1947500, E=6
2010-11-20JossNF-PM1
B1=20000
2009-01-14Sturle SundeNF
no factor from 2^60 to 2^61