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

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MnStatusDetails
306739Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
608076014060110012870639310460405734112.22024-12-30 14:47:06
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000712 / 1566
Estimated T-Level: 32.3 ⓘ
TF below 2^102 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David Slowinski646A0
Verified (Factored)Unknown646A0
Verified (Factored)Klaus Kastens59ED43EE40FE646A0
Verified (Factored)Eivind Triel59ED43EE40FE646A153994
Verified (Factored)2001-12-08Dennis Pope59ED43EE40FE646A237417
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2025-01-07Jason Lynch90F79BDD9BAD280319644953
History
DateUserTypeResult
2025-01-07Taremimi7710CERT
PRP Certification
Proof certified good
2025-01-07Jason LynchC-PRP
M306739/6080760140601100128706393104604057 : 90F79BDD9BAD2803
PRP proof power = 5
PRP: Verified
Proof certified good
2024-12-30axnF-ECM
Factor: 6080760140601100128706393104604057 / (ECM curve 6, B1=2000000, B2=4060028115, Edwards Sigma=1595612862052993)
2022-12-30masserNF-PP1
Start=6/5, B1=20000000, B2=620000000
2022-12-25masserNF-PP1
Start=159/41, B1=20000000, B2=620000000
2022-12-23masserNF-PP1
Start=2/7, B1=20000000, B2=620000000
2022-09-23Oliver KruseNF-PM1
B1=1000000000, B2=36087207726570
2022-06-09Gordon SpenceNF
no factor from 2^67 to 2^68
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2021-01-20YxinityNF
no factor from 2^66 to 2^67
2019-11-22Gordon SpenceNF
no factor from 2^65 to 2^66
2018-01-19BloodERazorNF
no factor from 2^64 to 2^65
2015-12-20Gordon SpenceNF
no factor from 2^63 to 2^64
2015-12-20Gordon SpenceNF
no factor from 2^62 to 2^63
2015-07-19NRNF
no factor from 2^61 to 2^62
2012-10-20alpertronNF-PM1
B1=100000000, B2=2000000000, E=12
2012-08-20alpertronNF-PM1
B1=10000000, B2=200000000, E=12
2012-04-24David CampeauNF
no factor from 2^60 to 2^61
2009-01-28Sturle SundeNF
no factor from 2^59 to 2^60
2009-01-01Sturle SundeNF
no factor from 2^58 to 2^59
2008-11-16GrunwalderGIMPNF-PM1
B1=2000000, B2=200000000, E=12