Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
15143287Factored
FactorDigitsBitsDate
290187542519211915204487706464967878337121.12022-11-02 20:06:07
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)2002-10-19Gary Cunningham A55A0706E29B09318292026
Verified (Factored)2006-10-24Shane SnyderA55A0706E29B09313363622
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2022-11-09Naegi MakotoF6B1677943CFB08F1618311553
History
DateUserTypeResult
2023-11-04nordiNF-PM1
B1=480000, B2=454342350
2023-10-22nordiNF-PM1
B1=480000
2022-11-09curtiscCERT
PRP Certification
Proof certified good
2022-11-09Naegi MakotoC-PRP
M15143287/2901875425192119152044877064649678783 : F6B1677943CFB08F
PRP proof power = 8
PRP: Verified
Proof certified good
2022-11-02ATHF-PP1
Start=2/7, B1=1000000, Factor: 2901875425192119152044877064649678783
2021-12-01Dylan DelgadoNF
no factor from 2^72 to 2^73
2021-09-16Dylan DelgadoNF
no factor from 2^71 to 2^72
2021-08-25ChuckNF
no factor from 2^70 to 2^71
2021-06-30lycornNF
no factor from 2^69 to 2^70
2017-12-24ramgeisNF
no factor from 2^68 to 2^69
2017-12-24ramgeisNF
no factor from 2^67 to 2^68
2016-03-16Mark RoseNF
no factor from 2^65 to 2^66
2014-05-14NesowaNF
no factor from 2^66 to 2^67