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

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MnStatusDetails
16029859Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
866514917478206277532632376.22021-08-19 08:50:54
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)2003-04-19Richard OtterAEF51B3786E8BA3F1485015
Verified (Factored)2006-07-25Phillip TwissAEF51B3786E8BA3F5888471
Verified (Factored)2006-08-25denzil hofflandAEF51B3786E8BA3F14401954
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-12-30PerigB27E1BE735C73A051703591353
P-1 factors
DateFactorB1B2
2021-08-198665149174782062775326319600001960000
History
DateUserTypeResult
2023-12-30LOBESCERT
PRP Certification
Proof certified good
2023-12-30PerigC-PRP
M16029859/86651491747820627753263 : B27E1BE735C73A05
PRP proof power = 8
PRP: Verified
Proof certified good
2023-11-24nordiNF-PM1
B1=500000, B2=265291950
2023-11-23nordiNF-PM1
B1=500000
2023-09-13nordiNF-PM1
B1=400000
2021-08-19Architects CubedF-PM1
Factor: 86651491747820627753263 / (P-1, B1=1960000)
2021-08-16ChuckNF
no factor from 2^72 to 2^73
2021-08-16ChuckNF
no factor from 2^71 to 2^72
2021-08-15Dylan DelgadoNF
no factor from 2^70 to 2^71
2020-08-20Dylan DelgadoNF
no factor from 2^69 to 2^70
2017-10-01ramgeisNF
no factor from 2^68 to 2^69
2016-03-16Mark RoseNF
no factor from 2^65 to 2^66
2015-11-12mikrNF
no factor from 2^67 to 2^68
2013-10-28NesowaNF
no factor from 2^66 to 2^67