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

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MnStatusDetails
17741627Factored
FactorDigitsBitsDate
1232179432191557857138235916833312936938123.22022-01-14 14:36:32
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)2003-05-26Sponk4E889B3D42C3154012816528
Verified (Factored)2006-09-11George Tolley4E889B3D42C3154016659548
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2022-11-17Naegi Makoto3D00C73B39D8112811212823553
P-1 factors
DateFactorB1B2
2022-01-14123217943219155785713823591683331293691250000152521950
History
DateUserTypeResult
2022-11-17KIM YANGEONCERT
PRP Certification
Proof certified good
2022-11-17Naegi MakotoC-PRP
M17741627/12321794321915578571382359168333129369 : 3D00C73B39D81128
PRP proof power = 8
PRP: Verified
Proof certified good
2022-01-14masserF-PM1
Factor: 12321794321915578571382359168333129369 / (P-1, B1=1250000, B2=152521950)
2021-09-19-Anonymous-NF
no factor from 2^71 to 2^72
2021-08-30ChuckNF
no factor from 2^70 to 2^71
2020-04-12lycornNF
no factor from 2^69 to 2^70
2018-03-11ramgeisNF
no factor from 2^68 to 2^69
2018-03-11ramgeisNF
no factor from 2^67 to 2^68
2014-08-23NesowaNF
no factor from 2^66 to 2^67
2013-09-25David CampeauNF
no factor from 2^65 to 2^66