7^473-1

Open composite · C299

NFS Planning

GNFS Murphy estimate: 1.02e-20
SNFS Murphy score: 1.53e-18
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 2.92649

Identifiers

Target expression: 7^473-1
Target link: FactorDB page
Target ID: 1000000000018628851
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C299
Imported: Jun 03, 2026, 04:31 PM UTC

Raw pmain126 Factorization

(1,11,43) 13055747.1375014947659.87422586131717.70900626356541212457799.C299

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 1.53e-18
Skew: 2.92649
Selected: Best

n: 67273984398297018697292565164129309842378593629861663169417132379154310847435765536275218538448195164599436224077548821947932258587928594611264612841063972552649208276931567040469469455414621325246857467072193664756795434719682079973406822885929049817158985179259185121237913292957972456129882871611
# 7^473-1, difficulty: 402.27, skewness: 2.30
# cost: 1.83083e+23, est. time: 87182512.12 GHz days (not accurate yet!)
# Optimized skew: 2.92649 Murphy: 1.53e-18
skew: 2.92649
c7: 1
c0: -343
Y1: -1
Y0: 2928644930813641516032715844013695341634232321209103400801
type: snfs