2LM

2^2974+1 L

Open composite · C376 · component L

NFS Planning

GNFS Murphy estimate: 3.47e-25
SNFS Murphy score: 7.09e-20
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 8
SNFS skew: 1.03664

Identifiers

Target expression: 2^1487+1-2^744
Target value: 4281574964652592620560008295932721923037599594766946877938940188573115704414468042438608506663204255572894336767021181323156072868831782196554081899170495708970941953775524568418799159128840691715903586955583328790448664338890170538406666730294708008278103176994923823237791400903734143414758547136741419712549436908788489913435690121892849296431423988679109722753952319461156188833677740772501139411097361066372696623913419642740459718800270426113
Target link: FactorDB page
Target ID: 1100000000004251170
Target changed: -
Parent query: 2^2974+1
Parent ID: -
Cofactor token: C376
Imported: Jun 03, 2026, 04:30 PM UTC

Raw pmain126 Factorization

11897.9378984841.10676191814411536832074834433356771402537588329778394545613.C376

SNFS Polynomial

Polynomial

Degree: 8
Murphy: 7.09e-20
Skew: 1.03664
Selected: Best

n: 3594130888354001959275231073357042403535416150775650384961446661643982897914238792224126388674477641385121732170804411126016859442978203199838544749767527906136786703931708269586702459617328937916623335820020080825175683758608062140415156668432843098277316266535960524225949897313312032790371849735173527326826672157877671828380305244046090865039271726535219800655021868639813
# 2^2974+1 Aurifeuillian L, difficulty: 447.93, skewness: 1.09
# cost: 2.31168e+24, est. time: 1100800808.64 GHz days (not accurate yet!)
# Optimized skew: 1.03664 Murphy: 7.09e-20
skew: 1.03664
c8: 1
c4: -2
c0: 2
Y1: -1
Y0: 98079714615416886934934209737619787751599303819750539264
type: snfs