3^817-1

Open composite · C322

NFS Planning

GNFS Murphy estimate: 4.71e-22
SNFS Murphy score: 4.24e-18
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 1.73726

Identifiers

Target expression: 3^817-1
Target link: FactorDB page
Target ID: 1000000000018246915
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C322
Imported: Jun 03, 2026, 04:30 PM UTC

Raw pmain126 Factorization

(1,19,43) 35916262161133.59346557047682110885478903. C322

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 4.24e-18
Skew: 1.73726
Selected: Best

n: 1580849942462915652815232703984668851127577716546025409767706847927768504239258359548867714253315283353070403900866224089588625360209482164565840447527703017251513010464831490211485936698570587095776470275322318967589963542140029599359110435977472796067538996122131286437380619992197352190729263294174563970031283716180411
# 3^817-1, difficulty: 390.76, skewness: 1.37
# cost: 9.40705e+22, est. time: 44795480.28 GHz days (not accurate yet!)
# Optimized skew: 1.73726 Murphy: 4.24e-18
skew: 1.73726
c7: 1
c0: -9
Y1: -1
Y0: 66555937033867822607895549241096482953017615834735226163
type: snfs