12-

12^331-1

Open composite · C290

NFS Planning

GNFS Murphy estimate: 3.38e-20
SNFS Murphy score: 5.26e-17
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 0.80677

Identifiers

Target expression: 12^331-1
Target link: FactorDB page
Target ID: 1100000000013092068
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C290
Imported: Jun 03, 2026, 04:32 PM UTC

Raw pmain126 Factorization

(1) 329677.23036939.25107013.3974393645579167915081.3980083576443946028213641.C290

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 5.26e-17
Skew: 0.80677
Selected: Best

n: 48767244322280220819332379090155417638224425916861217759089300327826299153000827032561783712206616743596075508690912991348126126486175786517257050623269021828152237836942971482150968191761437464141777243667133726667867279624932647900922477091461635794305647210446867493820796516599753383943
# 12^331-1, difficulty: 358.11, skewness: 1.02
# cost: 1.32944e+22, est. time: 6330651.05 GHz days (not accurate yet!)
# Optimized skew: 0.80677 Murphy: 5.26e-17
skew: 0.80677
c7: 8
c0: -9
Y1: -1053291452546545112653655703164648880199901921673216
Y0: 1
type: snfs