10-

10^415-1

Open composite · C246

NFS Planning

GNFS Murphy estimate: 1.20e-17
SNFS Murphy score: 6.72e-17
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 8
SNFS skew: 0.33981

Identifiers

Target expression: 10^415-1
Target link: FactorDB page
Target ID: 1100000000013095670
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C246
Imported: Jun 03, 2026, 04:31 PM UTC

Raw pmain126 Factorization

(1,5,83) 219303431.630959088384161.2583267906383511978058229561.96357627407011709976598813958321.C246

SNFS Polynomial

Polynomial

Degree: 8
Murphy: 6.72e-17
Skew: 0.33981
Selected: Best

n: 261303170609166961870833353197319452742083188495425470443116205149059965590890802920923145030385813494945363983612185905845709127145528931993925593080949313402553373531578454918262787522163337580121989141035408071913518532786259694883399588818921
# 10^415-1, difficulty: 332.00, skewness: 0.32
# cost: 2.56956e+21, est. time: 1223600.38 GHz days (not accurate yet!)
# Optimized skew: 0.33981 Murphy: 6.72e-17
skew: 0.33981
c8: 10000
c6: 1000
c4: 100
c2: 10
c0: 1
Y1: -1
Y0: 100000000000000000000000000000000000000000
type: snfs