6^520+1

Open composite · C242

NFS Planning

GNFS Murphy estimate: 2.05e-17
SNFS Murphy score: 1.90e-16
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 8
SNFS skew: 1.10263

Identifiers

Target expression: 6^520+1
Target link: FactorDB page
Target ID: 1100000000011094402
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C242
Imported: Jun 03, 2026, 04:31 PM UTC

Raw pmain126 Factorization

(8,40,104) 17158720801.2137085510580627884161.49667910772813837907594881.C242

SNFS Polynomial

Polynomial

Degree: 8
Murphy: 1.90e-16
Skew: 1.10263
Selected: Best

n: 35456650473260146773890607474090581892103710608494714250576808985818818746770531228631595972517369840217953610234134584547206218650020621475457020991216641952761286691614494542535316185745119825296792914936336734274576198431220688383766020321
# 6^520+1, difficulty: 323.71, skewness: 1.00
# cost: 1.50051e+21, est. time: 714529.09 GHz days (not accurate yet!)
# Optimized skew: 1.10263 Murphy: 1.90e-16
skew: 1.10263
c8: 1
c6: -1
c4: 1
c2: -1
c0: 1
Y1: -1
Y0: 29098125988731506183153025616435306561536
type: snfs