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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Exponent Range:










MnStatusDetails
336857Factored
FactorDigitsBitsDate
632995234247756036496337992685.72010-06-14 22:55:37
ECM
DigitsB1Curves
2550000280 / 280
30250000238 / 640
Estimated T-Level: 26.9
TF below 2^84 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David Slowinski251E0
Verified (Factored)Unknown251E0
Verified (Factored)Guillermo Ballester ValorD3DCED843C02251E0
Verified (Factored)Eivind TrielD3DCED843C02251E174811
Verified (Factored)2002-01-15Dennis PopeD3DCED843C02251E104212
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-23Oliver KruseBACADB4737C07E601013
Verified2017-10-13Oliver KruseBACADB4737C07E60132106313
Verified2017-12-12ATHBACADB4737C07E6016763313
Unverified (Reliable)2020-04-18Oliver Kruse757D8297FB6CB1__120313553
History
DateUserTypeResult
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2021-06-10George WoltmanNF-PP1
Start=2/7, B1=10000000, B2=830000000
2021-06-10George WoltmanNF-PM1
B1=20000000, B2=1820000000
2020-04-18Oliver KruseC-PRP
M336857/63299523424775603649633799 : 757D8297FB6CB1__
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-12-12ATHC-PRP
M336857/63299523424775603649633799 : BACADB4737C07E60
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-10-13Oliver KruseC-PRP
M336857/63299523424775603649633799 : BACADB4737C07E60
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-09-23Oliver KruseC-PRP
M336857/63299523424775603649633799 : BACADB4737C07E60
PRP: Unverified (Reliable)
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M336857/63299523424775603649633799 : BACADB4737C07E60
PRP without proof (not generated)
2010-06-14Dmitry B. KhachaturovF-ECM
Factor: 63299523424775603649633799
2009-01-29Sturle SundeNF
no factor from 2^59 to 2^60
2008-12-29Sturle SundeNF
no factor from 2^58 to 2^59