5^509-1

Open composite · C271

NFS Planning

GNFS Murphy estimate: 4.27e-19
SNFS Murphy score: 5.35e-17
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 1.99590

Identifiers

Target expression: 5^509-1
Target link: FactorDB page
Target ID: 1000000000018437067
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C271
Imported: Jun 03, 2026, 04:30 PM UTC

Raw pmain126 Factorization

(1) 1019.219889.3600024661.1258198860123384481.4756095391999990292067628948735218974443737998939.C271

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 5.35e-17
Skew: 1.99590
Selected: Best

n: 3090218639062915344503419301203215742963632790464415737081799260019520585904957405667033585269011437269191260498215642047645159240136553531894845560011982341578680670965469313817023519369249350237499549888142019714298749384097782514105071089764120898313798455628312043609
# 5^509-1, difficulty: 357.17, skewness: 1.58
# cost: 1.25478e+22, est. time: 5975142.62 GHz days (not accurate yet!)
# Optimized skew: 1.99590 Murphy: 5.35e-17
skew: 1.99590
c7: 1
c0: -25
Y1: -1
Y0: 1058791184067875423835403125849552452564239501953125
type: snfs