12-

12^373-1

Open composite · C382

NFS Planning

GNFS Murphy estimate: 1.56e-25
SNFS Murphy score: 1.67e-18
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 0.79927

Identifiers

Target expression: 12^373-1
Target link: FactorDB page
Target ID: 1100000000013092188
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C382
Imported: Jun 03, 2026, 04:32 PM UTC

Raw pmain126 Factorization

(1) 243977809.366166869023. C382

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 1.67e-18
Skew: 0.79927
Selected: Best

n: 3484838989903822662855514326305815609463597576230953273512476532051597263803122961636371630332694676180795418867949344197039932415345368657805383093003776636756010544900584803653958581695444620298837795969205476569264429579770550296632249383807830417639545643787816196617803965694264294331744932083316413884274620643156148226272687913309480541425864897772330534054283932041721595923
# 12^373-1, difficulty: 403.44, skewness: 1.02
# cost: 1.95797e+23, est. time: 93236465.56 GHz days (not accurate yet!)
# Optimized skew: 0.79927 Murphy: 1.67e-18
skew: 0.79927
c7: 8
c0: -9
Y1: -3145111424640742961662013471158390921894823939685476204544
Y0: 1
type: snfs