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

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MnStatusDetails
17406937Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
5876152211259281529289512479.02024-11-20 23:59:53
ECM
DigitsB1Curves
25500001 / 280
Estimated T-Level: 20.0 ⓘ
TF below 2^61 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)2004-11-22jeff471CC1D4CDCDE9BE15046183
Verified (Factored)2005-04-02Mark Ramsay471CC1D4CDCDE9BE14704272
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2024-11-27dnovaE50CF7E612848B591979054353
P-1 factors
DateFactorB1B2
2024-11-20587615221125928152928951900000578733870
History
DateUserTypeResult
2024-11-27XyzzyCERT
PRP Certification
Proof certified good
2024-11-27dnovaC-PRP
M17406937/587615221125928152928951 : E50CF7E612848B59
PRP proof power = 8
PRP: Verified
Proof certified good
2024-11-20MooMoo2F-PM1
Factor: 587615221125928152928951 / (P-1, B1=900000, B2=578733870)
2022-01-25-Anonymous-NF
no factor from 2^74 to 2^75
2022-01-20-Anonymous-NF
no factor from 2^73 to 2^74
2022-01-11TheJudgerNF
no factor from 2^72 to 2^73
2021-09-15-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-10SRBaseNF
no factor from 2^70 to 2^71
2020-04-04lycornNF
no factor from 2^69 to 2^70
2018-03-24ramgeisNF
no factor from 2^68 to 2^69
2018-03-24ramgeisNF
no factor from 2^67 to 2^68
2017-11-07ThaNF-PM1
B1=300000, B2=6000000, E=6
2017-11-07ThaNF-PM1
B1=300000, B2=6000000, E=12
2014-08-31NesowaNF
no factor from 2^66 to 2^67
2013-09-23David CampeauNF
no factor from 2^65 to 2^66