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

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Exponent Range:










MnStatusDetails
2819329Factored
FactorDigitsBitsDate
3075063250820430798792168.12013-03-30 10:01:50
ECM
DigitsB1Curves
25500008 / 280
Estimated T-Level: 20.1
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Zach Pierce511228B782C0DD270
Verified (Factored)1999-07-27Daniel Cejka511228B782C0DD272434487
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-22Oliver Kruse51CB921461A5D2B91172441553
Verified2017-12-06kkmrkkblmbrbk51CB921461A5D2B9151859953
History
DateUserTypeResult
2023-01-29USAFSSNF-PM1
B1=360000, B2=287380170
2017-12-06kkmrkkblmbrbkC-PRP
M2819329/307506325082043079879 : 51CB921461A5D2B9
PRP: Verified
PRP without proof (not generated)
2017-10-22Oliver KruseC-PRP
M2819329/307506325082043079879 : 51CB921461A5D2B9
PRP: Verified
PRP without proof (not generated)
2013-03-30KAMCOBILLF-ECM
Factor: 307506325082043079879
2013-01-10dbaughNF
no factor from 2^62 to 2^63
2012-02-23Grant McCrackenNF
no factor from 2^61 to 2^62
2009-02-13Sturle SundeNF
no factor from 2^60 to 2^61