6^517-1

Open composite · C230

NFS Planning

GNFS Murphy estimate: 1.02e-16
SNFS Murphy score: 1.81e-18
Preferred method: GNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 1.64419

Identifiers

Target expression: 6^517-1
Target link: FactorDB page
Target ID: 1100000000024699745
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C230
Imported: Jun 03, 2026, 04:31 PM UTC

Raw pmain126 Factorization

(1,11,47) 12409.86857.237821.14413401469391.2114014763980219.4165945205562276242792733913031.3288382204247204652947883195193882653957079766049791521.C230

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 1.81e-18
Skew: 1.64419
Selected: Best

n: 69347654833986071492248587592431999405838487513498862718868399573255958455782672307348636733632804690491671447250281939661111379437292927418644654986784338488401375684063685587442426343383782761519448330863803212772479536893156653
# 6^517-1, difficulty: 403.08, skewness: 1.29
# cost: 1.91851e+23, est. time: 91357395.56 GHz days (not accurate yet!)
# Optimized skew: 1.64419 Murphy: 1.81e-18
skew: 1.64419
c7: 1
c0: -6
Y1: -1
Y0: 3829944921253794893077685127088430174646042802674934480896
type: snfs