Marin Mersenne 2^P-1
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MnStatusDetails
7983733Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
295989009353840463532064.72013-12-22 13:48:26
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1999-08-31Michael Weber6334CA85964E1CEF34655
Verified (Factored)2002-10-07Robin Tremblay6334CA85964E1CEF1023584
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2018-07-02_p95holder_81A32D6070700C5C1165208353
Verified2019-12-21arnaud81A32D6070700C5C1416363353
History
DateUserTypeResult
2025-10-24Sid & AndyNF-PM1
B1=2300000, B2=3554036850
2019-12-21arnaudC-PRP
M7983733/29598900935384046353 : 81A32D6070700C5C
PRP: Verified
PRP without proof (not generated)
2018-07-02_p95holder_C-PRP
M7983733/29598900935384046353 : 81A32D6070700C5C
PRP: Verified
PRP without proof (not generated)
2013-12-22David CampeauF
Factor: 29598900935384046353 / TF: 64-65
2013-10-02NesowaNF
no factor from 2^63 to 2^64
2012-08-08Squeeky_SquirrelNF-PM1
B1=100000, B2=1925000, E=6