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
258067Factored
FactorDigitsBitsDate
12387217823.6old
44871822854891342.02008-07-21 09:15:09
230777831865432308161221912684.32015-09-04 10:44:51
835264487659651185725803124250766552580940132.62022-04-29 18:13:56
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000237 / 1566
Estimated T-Level: 30.8 ⓘ
TF below 2^97 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-09-22Oliver Kruse464E1EFCFB839BA93013
Verified (Factored)2017-10-12kkmrkkblmbrbk464E1EFCFB839BA9320847613
Verified (Factored)2020-04-17Oliver Kruse2C0BA0DB4338F27735508653
Verified2022-04-29aperson12C0BA0DB4338F27747018553
P-1 factors
DateFactorB1B2
2022-04-2983526448765965118572580312425076655258093000000010035812696910
History
DateUserTypeResult
2022-04-29curtiscCERT
PRP Certification
Proof certified good
2022-04-29aperson1C-PRP
M258067/12387217/4487182285489/23077783186543230816122191/8352644876596511857258031242507665525809 : 2C0BA0DB4338F277
PRP proof power = 5
PRP: Verified
Proof certified good
2022-04-29Oliver KruseF-PM1
Factor: 8352644876596511857258031242507665525809 / (P-1, B1=30000000, B2=10035812696910)
2021-08-21Oliver KruseNF-PM1
B1=30000000, B2=3000000000, E=24
2020-04-17Oliver KruseC-PRP
M258067/12387217/4487182285489/23077783186543230816122191 : 2C0BA0DB4338F277
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M258067/12387217/4487182285489/23077783186543230816122191 : 464E1EFCFB839BA9
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M258067/known_factors : 464E1EFCFB839BA9
PRP without proof (not generated)
2015-09-04TJAOIF-ECM
Factor: 23077783186543230816122191 / (ECM curve 47, B1=50000, B2=5000000)
2008-07-21J FeitsmaF
Factor: 4487182285489