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
248903Factored
FactorDigitsBitsDate
1391647471326739795229810043593096.82015-11-26 03:41:41
ECM
DigitsB1Curves
2550000280 / 280
30250000453 / 640
Estimated T-Level: 28.5
TF below 2^90 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David Slowinski3DCF0
Verified (Factored)Unknown3DCF0
Verified (Factored)Ken Kiefer97969584CC953DCF0
Verified (Factored)Brian J. Beesley97969584CC953DCF0
Verified (Factored)Eivind Triel97969584CC953DCF36690
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-22Oliver Kruse92EB5AAAD27C6F901013
Verified2017-10-12Oliver Kruse92EB5AAAD27C6F90122092613
Verified2017-11-06kkmrkkblmbrbk92EB5AAAD27C6F9011613713
Verified2020-04-17Oliver KruseC0D56F68653C3BCB18379753
Verified2024-02-03Wentao HuangC0D56F68653C3BCB14613353
History
DateUserTypeResult
2024-02-03curtiscCERT
PRP Certification
Proof certified good
2024-02-03Wentao HuangC-PRP
M248903/139164747132673979522981004359 : C0D56F68653C3BCB
PRP proof power = 5
PRP: Verified
Proof certified good
2022-04-17Oliver KruseNF-PM1
B1=30000000, B2=10120247026890
2022-03-07LordJuliusNF
no factor from 2^57 to 2^58
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2021-08-09Oliver KruseNF-PM1
B1=30000000, B2=3000000000, E=24
2020-04-17Oliver KruseC-PRP
M248903/139164747132673979522981004359 : C0D56F68653C3BCB
PRP: Verified
PRP without proof (small exponent)
2017-11-06kkmrkkblmbrbkC-PRP
M248903/139164747132673979522981004359 : 92EB5AAAD27C6F90
PRP: Verified
PRP without proof (small exponent)
2017-10-12Oliver KruseC-PRP
M248903/139164747132673979522981004359 : 92EB5AAAD27C6F90
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M248903/139164747132673979522981004359 : 92EB5AAAD27C6F90
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M248903/139164747132673979522981004359 : 92EB5AAAD27C6F90
PRP without proof (not generated)
2015-11-26bamF-ECM
Factor: 139164747132673979522981004359 / (ECM curve 2, B1=250000, B2=25000000)
2015-08-10snme2pm1NF
no factor from 2^61 to 2^62
2014-12-24Denial140NF-PM1
B1=10000000, B2=250000000, E=12
2013-10-13David CampeauNF-PM1
B1=2570000, B2=74530000, E=12
2013-07-13lycornNF
no factor from 2^60 to 2^61
2012-02-26JossNF-PM1
B1=2520271
2011-07-24JossNF-PM1
B1=2016217
2011-02-07JossNF-PM1
B1=2000000
2009-01-24Sturle SundeNF
no factor from 2^59 to 2^60
2008-12-31Sturle SundeNF
no factor from 2^58 to 2^59