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

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MnStatusDetails
14047483Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
17453652364301563591558784172890.52020-10-08 15:25:45
ECM
DigitsB1Curves
25500007 / 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)2002-01-28Leonard Kay27BCE265DA2BC7988064900
Verified (Factored)2005-09-22Bernd Kotzbeck27BCE265DA2BC798346152
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2022-12-18LordJulius7C4D124D8441338211373101253
P-1 factors
DateFactorB1B2
2020-10-0817453652364301563591558784176000000160000000
History
DateUserTypeResult
2022-12-18Team_InspectorCERT
PRP Certification
Proof certified good
2022-12-18LordJuliusC-PRP
M14047483/1745365236430156359155878417 : 7C4D124D84413382
PRP proof power = 8
PRP: Verified
Proof certified good
2020-10-08masserF-PM1
Factor: 1745365236430156359155878417 / (P-1, B1=6000000, B2=160000000, E=12)
2020-09-26masserNF-PM1
B1=6000000
2020-07-25masserNF
no factor from 2^70 to 2^71
2020-05-13masserNF
no factor from 2^69 to 2^70
2018-03-02ramgeisNF
no factor from 2^68 to 2^69
2018-03-02ramgeisNF
no factor from 2^67 to 2^68
2015-08-20ThaNF
no factor from 2^66 to 2^67
2014-07-22NesowaNF
no factor from 2^65 to 2^66