12-

12^319-1

Open composite · C260

NFS Planning

GNFS Murphy estimate: 1.86e-18
SNFS Murphy score: 1.54e-16
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 5
SNFS skew: 1.52638

Identifiers

Target expression: 12^319-1
Target link: FactorDB page
Target ID: 1100000000013092037
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C260
Imported: Jun 03, 2026, 04:32 PM UTC

Raw pmain126 Factorization

(1,11,29) 611369881.15406509463646344244268006401549341. C260

SNFS Polynomial

Polynomial

Degree: 5
Murphy: 1.54e-16
Skew: 1.52638
Selected: Best

n: 14419560977006688269605953736604426925178970534329211484269648844964956972736917075777408161038132019032082561486786751670098922078797415780343508334573222122587779073540965941495972026370945466908189601775397366853184541961976713580732887298029270373253522721
# 12^319-1, difficulty: 312.96, skewness: 1.00
# cost: 7.37716e+20, est. time: 351293.52 GHz days (not accurate yet!)
# Optimized skew: 1.52638 Murphy: 1.54e-16
skew: 1.52638
c5: 1
c4: 1
c3: -4
c2: -3
c1: 3
c0: 1
Y1: -19781359483314150527412524285952
Y0: 391302183008102676318141068027642364938466415279908207464546305
type: snfs