2LM

2^2434+1 L

Open composite · C323 · component L

NFS Planning

GNFS Murphy estimate: 4.12e-22
SNFS Murphy score: 1.46e-17
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 8
SNFS skew: 0.98593

Identifiers

Target expression: 2^1217+1-2^609
Target value: 2256860539307393105011327329377011038103787896235450685421418815999277883882438081825667093264603044024991209099357269234625403589861921393867700290549018439799210439036894036739316761272124693933600056309181750796320432341106356979351346630885575554580170564444748133808068183740711559826537997544186200827484939802250322438930129937714152977618972390705028724162561
Target link: FactorDB page
Target ID: 1100000000000191763
Target changed: -
Parent query: 2^2434+1
Parent ID: -
Cofactor token: C323
Imported: Jun 03, 2026, 04:30 PM UTC

Raw pmain126 Factorization

116833.321289.408913.118470422761.16285092936791741. C323

SNFS Polynomial

Polynomial

Degree: 8
Murphy: 1.46e-17
Skew: 0.98593
Selected: Best

n: 76210048924907056577471532120435454975186249206892104965933762783225536968357917828300550062179221455669241121071397819293269233554617580267730013543650365322199210807445528629813712103513980992426861352704588084069737040245905480263028628513420629687137133134631895486290487098271473779953016946994618773734949785094467381
# 2^2434+1 Aurifeuillian L, difficulty: 366.35, skewness: 0.92
# cost: 2.20001e+22, est. time: 10476239.21 GHz days (not accurate yet!)
# Optimized skew: 0.98593 Murphy: 1.46e-17
skew: 0.98593
c8: 2
c4: -2
c0: 1
Y1: -1
Y0: 5708990770823839524233143877797980545530986496
type: snfs