3^889-1

Open composite · C276

NFS Planning

GNFS Murphy estimate: 2.19e-19
SNFS Murphy score: 1.14e-17
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 6
SNFS skew: 1.42304

Identifiers

Target expression: 3^889-1
Target link: FactorDB page
Target ID: 1000000000018247347
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C276
Imported: Jun 03, 2026, 04:30 PM UTC

Raw pmain126 Factorization

(1,7,127) 9692080693.556515870457.5649879696475057.8465043218495812988761.26856195284024276690021111.C276

SNFS Polynomial

Polynomial

Degree: 6
Murphy: 1.14e-17
Skew: 1.42304
Selected: Best

n: 486595953349241466102309596975405813258678481742336881648566964518816336112896709010652290471204721487011836503294074827527559683668552616449801495762922496991875179363731361093048484443802646598620559339878017647954268748183146634982110089168225493557684902560483035234266947
# 3^889-1, difficulty: 363.57, skewness: 1.00
# cost: 1.85686e+22, est. time: 8842192.22 GHz days (not accurate yet!)
# Optimized skew: 1.42304 Murphy: 1.14e-17
skew: 1.42304
c6: 1
c5: 1
c4: 1
c3: 1
c2: 1
c1: 1
c0: 1
Y1: -1
Y0: 3930061525912861057173624287137506221892737197425280369698987
type: snfs