3^809-1

Open composite · C289

NFS Planning

GNFS Murphy estimate: 3.86e-20
SNFS Murphy score: 5.26e-18
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 2.03057

Identifiers

Target expression: 3^809-1
Target link: FactorDB page
Target ID: 1000000000018246867
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C289
Imported: Jun 03, 2026, 04:30 PM UTC

Raw pmain126 Factorization

(1) 1619.1513137421.73238445222097.157695593446805927.326515135597401725879.2133031659325752941414443037439757.C289

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 5.26e-18
Skew: 2.03057
Selected: Best

n: 2485882281085579925406645160302025481005968002491145948805797590170765078541573526347051441744342929194383093853466764432410006293896360950439999326110222023103342726747968618212986076451895901830025456602644759079162188289781314154077243418412187272833423329089956809353745544581657231587
# 3^809-1, difficulty: 387.42, skewness: 1.60
# cost: 7.7364e+22, est. time: 36839986.72 GHz days (not accurate yet!)
# Optimized skew: 2.03057 Murphy: 5.26e-18
skew: 2.03057
c7: 1
c0: -27
Y1: -1
Y0: 22185312344622607535965183080365494317672538611578408721
type: snfs