12-

12^359-1

Open composite · C379

NFS Planning

GNFS Murphy estimate: 2.33e-25
SNFS Murphy score: 5.34e-18
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 0.80168

Identifiers

Target expression: 12^359-1
Target link: FactorDB page
Target ID: 1100000000013092147
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C379
Imported: Jun 03, 2026, 04:32 PM UTC

Raw pmain126 Factorization

(1) 719.90469. C379

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 5.34e-18
Skew: 0.80168
Selected: Best

n: 3727743020032158602674073562705942058035689224630816048166062733896832792692354937528473493664274821296597406152195056201225131064416289279599414511501741418175666801664307210273388628711028539167955869066801510400152457699736338224980697367419188325665555412945663431092254489854164337211394515522475999370002010066998048101150974393102224745511609698828391189348769693132848407
# 12^359-1, difficulty: 388.33, skewness: 1.02
# cost: 8.15896e+22, est. time: 38852186.31 GHz days (not accurate yet!)
# Optimized skew: 0.80168 Murphy: 5.34e-18
skew: 0.80168
c7: 8
c0: -9
Y1: -21841051560005159455986204660822159179825166247815806976
Y0: 1
type: snfs