2^1453-1

Open composite · C418

NFS Planning

GNFS Murphy estimate: 1.27e-27
SNFS Murphy score: 1.06e-19
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 1.72413

Identifiers

Target expression: 2^1453-1
Target link: FactorDB page
Target ID: 1000000000000001453
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C418
Imported: Jun 03, 2026, 04:29 PM UTC

Raw pmain126 Factorization

8719.6479507883338993. C418

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 1.06e-19
Skew: 1.72413
Selected: Best

n: 4411385379751337243434831821836297780682669319516544780408713083536756850360960750395063471967531821797593476879040167965525479749951235953099395273654127988026650388188799913885972751454075552303263800981868819419766722423097741422853796171577262995828888081739572871137101881896203206076771495042522938727251409036439051139579877254717641926831027558557432766725826401608562292587844456972238583325392841395646474273
# 2^1453-1, difficulty: 438.30, skewness: 1.35
# cost: 1.37233e+24, est. time: 653491679.12 GHz days (not accurate yet!)
# Optimized skew: 1.72413 Murphy: 1.06e-19
skew: 1.72413
c7: 1
c0: -8
Y1: -1
Y0: 411376139330301510538742295639337626245683966408394965837152256
type: snfs