5^509+1

Open composite · C355

NFS Planning

GNFS Murphy estimate: 5.74e-24
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: 1000000000016637067
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C355
Imported: Jun 03, 2026, 04:31 PM UTC

Raw pmain126 Factorization

(1) C355

SNFS Polynomial

Polynomial

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

n: 9944454308266942324387953753950578449835295379467209192362024444275037846760157739914899853867237071148682137674448135271216970793633736880648219772789446255308347723091708503326938765688580350588595405820085219687218956347451342826708915764004296989730084932353800287116274744448688838194671483903244735795958209768665344204426522386105110247929890950521
# 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