2LM

2^2766+1 M

Open composite · C261 · component M

NFS Planning

GNFS Murphy estimate: 1.62e-18
SNFS Murphy score: 2.16e-15
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 8
SNFS skew: 0.96323

Identifiers

Target expression: 2^1383+1+2^692
Target value: 211097943899216614887176072592734406508119168065548659690407969121128959938516379527839341162936106149516277558639520979827007639869526727334416428996678748580330458383411027099488670055832299779051348520145448826017868293698127485657358239554942392507270347273824744863574146711403322069248589630682084128192536157538007940347721074406101293796233673482745311778184181463692214286688918094830583917560359833571426305
Target link: FactorDB page
Target ID: 1100000000004225363
Target changed: -
Parent query: 2^2766+1
Parent ID: -
Cofactor token: C261
Imported: Jun 03, 2026, 04:30 PM UTC

Raw pmain126 Factorization

(2,922L) 58217228233022281. C261

SNFS Polynomial

Polynomial

Degree: 8
Murphy: 2.16e-15
Skew: 0.96323
Selected: Best

n: 608982030199389479724335987535918770893857694758647893607995715203653641005590567488784316154897519925019114440294638007962332710971678576030982990948791842874415593597421517809039673734204621999083609548428986713840474473780099130352680425967471003606643164921
# 2^2766+1 Aurifeuillian M, difficulty: 277.55, skewness: 0.84
# cost: 6.37407e+19, est. time: 30352.70 GHz days (not accurate yet!)
# Optimized skew: 0.96323 Murphy: 2.16e-15
skew: 0.96323
c8: 4
c6: 4
c4: 2
c2: 2
c0: 1
Y1: -1
Y0: 41538374868278621028243970633760768
type: snfs