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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
16808681Factored
FactorDigitsBitsDate
42998630488822375489110566394500284413739128.32022-05-12 10:14:15
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)2002-11-24Brian SmithDE037A782E1C9027186178
Verified (Factored)2006-04-14Eric BravickDE037A782E1C90272046976
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2022-11-17Naegi Makoto534404611F06F03F11337128853
P-1 factors
DateFactorB1B2
2022-05-124299863048882237548911056639450028441371000000503963130
History
DateUserTypeResult
2022-11-17drewCERT
PRP Certification
Proof certified good
2022-11-17Naegi MakotoC-PRP
M16808681/429986304888223754891105663945002844137 : 534404611F06F03F
PRP proof power = 8
PRP: Verified
Proof certified good
2022-05-12alpertronF-PM1
Factor: 429986304888223754891105663945002844137 / (P-1, B1=1000000, B2=503963130)
2021-11-26-Anonymous-NF
no factor from 2^72 to 2^73
2021-09-19-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-01lycornNF
no factor from 2^70 to 2^71
2020-05-24lycornNF
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
2016-03-16Mark RoseNF
no factor from 2^65 to 2^66
2014-09-15NesowaNF
no factor from 2^66 to 2^67