3^899-1

Open composite · C397

NFS Planning

GNFS Murphy estimate: 2.10e-26
SNFS Murphy score: 2.08e-19
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 1.25271

Identifiers

Target expression: 3^899-1
Target link: FactorDB page
Target ID: 1000000000018247407
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C397
Imported: Jun 03, 2026, 04:30 PM UTC

Raw pmain126 Factorization

(1,29,31) 21577. C397

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 2.08e-19
Skew: 1.25271
Selected: Best

n: 1869698776718185229255142477970046126019153927141369672290734722057608804634567316465477579467767516897073299002375023022422686440071184315560767011843796447115380768936335470087816348954131796974259196332882619550532857380456149340920507434635018769088970444354514676276770068315685243662206940349468587540058911815619148216878144053365671320816357075817078875817432433591598180113028525972449353
# 3^899-1, difficulty: 428.93, skewness: 1.60
# cost: 8.20979e+23, est. time: 390942409.75 GHz days (not accurate yet!)
# Optimized skew: 1.25271 Murphy: 2.08e-19
skew: 1.25271
c7: 1
c0: -27
Y1: -11790184577738583171520872861412518665678211592275841109096961
Y0: 1
type: snfs