7^475+1

Open composite · C220

NFS Planning

GNFS Murphy estimate: 3.88e-16
SNFS Murphy score: 1.38e-16
Preferred method: Similar
SNFS possible: Yes
SNFS degree: 8
SNFS skew: 0.40418

Identifiers

Target expression: 7^475+1
Target link: FactorDB page
Target ID: 1000000000016828863
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C220
Imported: Jun 03, 2026, 04:31 PM UTC

Raw pmain126 Factorization

(1,5,19,25,95) 1901.1259701.120223214550912251.54684647976753757010722762034774338101223801251886437644101.C220

SNFS Polynomial

Polynomial

Degree: 8
Murphy: 1.38e-16
Skew: 0.40418
Selected: Best

n: 1091985563058891089584113687311287021946596365333070686609872598432754974511527787106305975044680384489440528823262009077514374263047841155078640770514516439758675275810324695952556215785696468335671598147257070355012551
# 7^475+1, difficulty: 321.14, skewness: 0.38
# cost: 1.26757e+21, est. time: 603605.83 GHz days (not accurate yet!)
# Optimized skew: 0.40418 Murphy: 1.38e-16
skew: 0.40418
c8: 2401
c6: -343
c4: 49
c2: -7
c0: 1
Y1: -1
Y0: 5243338316756303634461458718861951455543
type: snfs