5^577-1

Open composite · C354

NFS Planning

GNFS Murphy estimate: 6.56e-24
SNFS Murphy score: 1.46e-18
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 1.56750

Identifiers

Target expression: 5^577-1
Target link: FactorDB page
Target ID: 1000000000018437475
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C354
Imported: Jun 03, 2026, 04:30 PM UTC

Raw pmain126 Factorization

(1) 2309.23081.185750794563808939.1075339516659493631903519. C354

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 1.46e-18
Skew: 1.56750
Selected: Best

n: 474763880486824160229917999362054897435817651086278036498640722652126016597505602550425604118162664830475879208440936994971269309447750002282690801889233068384929597624156666365726732231525415841472397937459714801312619641948686799299857401042434398843594041210103244510461322062792398122894265383795125891387019821311459752848377371476189076992703480529
# 5^577-1, difficulty: 403.31, skewness: 1.99
# cost: 1.94322e+23, est. time: 92534086.24 GHz days (not accurate yet!)
# Optimized skew: 1.56750 Murphy: 1.46e-18
skew: 1.56750
c7: 1
c0: -125
Y1: -2067951531382569187178521730174907133914530277252197265625
Y0: 1
type: snfs