2LM

2^2374+1 L

Open composite · C309 · component L

NFS Planning

GNFS Murphy estimate: 2.67e-21
SNFS Murphy score: 2.03e-17
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 6
SNFS skew: 1.55682

Identifiers

Target expression: 2^1187+1-2^594
Target value: 2101865168015838698494552941412675229929190032403404531461576759814543541411345900805356999174322042637496450077143748509348746007179768191527296128262782878986755794879881699326678315249907025977511898951721686719240245623841984532067032425273140017684854923461947201715008459730689947669799105403112951076456787781599346058772086041671763081674574941650945
Target link: FactorDB page
Target ID: 1100000000002031485
Target changed: -
Parent query: 2^2374+1
Parent ID: -
Cofactor token: C309
Imported: Jun 03, 2026, 04:30 PM UTC

Raw pmain126 Factorization

(2) 9497.151937.19078157209.18049600319059487020771408069. C309

SNFS Polynomial

Polynomial

Degree: 6
Murphy: 2.03e-17
Skew: 1.55682
Selected: Best

n: 846020430823831385743374741631583123342077572444506510324652266575058544749578904112407286439278081912584080062015217462709701826665717663289440857158059362725571646759085376811127660979831361577931660632118064589741427675506152722381387774100665155175807113136107736308294434560311593274686580399402733039481
# 2^2374+1 Aurifeuillian L, difficulty: 357.62, skewness: 1.12
# cost: 1.29005e+22, est. time: 6143114.11 GHz days (not accurate yet!)
# Optimized skew: 1.55682 Murphy: 2.03e-17
skew: 1.55682
c6: 1
c3: -2
c0: 2
Y1: -1
Y0: 401734511064747568885490523085290650630550748445698208825344
type: snfs