10-

10^419-1

Open composite · C344

NFS Planning

GNFS Murphy estimate: 2.49e-23
SNFS Murphy score: 4.15e-19
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 1.77332

Identifiers

Target expression: 10^419-1
Target link: FactorDB page
Target ID: 1100000000013095673
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C344
Imported: Jun 03, 2026, 04:31 PM UTC

Raw pmain126 Factorization

(1) 839.82963.481154717070862987053019025329.12627408558266078891364887027326567507.C344

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 4.15e-19
Skew: 1.77332
Selected: Best

n: 26273147355672167312699423104992036782027615315933928304627233833341084977968775567416710423916465373261052189643426582708783514905512565291504261980056247005631290222152163702426246431654707475471586718839394478253782346436121079707304486700222432169804624871671220328344168915879410319026286623618193795102698009581213304357868156727268724841
# 10^419-1, difficulty: 420.00, skewness: 1.39
# cost: 4.99839e+23, est. time: 238018540.19 GHz days (not accurate yet!)
# Optimized skew: 1.77332 Murphy: 4.15e-19
skew: 1.77332
c7: 1
c0: -10
Y1: -1
Y0: 1000000000000000000000000000000000000000000000000000000000000
type: snfs