2^1475-1

Open composite · C322

NFS Planning

GNFS Murphy estimate: 4.71e-22
SNFS Murphy score: 2.37e-17
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 8
SNFS skew: 0.77556

Identifiers

Target expression: 2^1475-1
Target link: FactorDB page
Target ID: 1000000000000001475
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C322
Imported: Jun 03, 2026, 04:29 PM UTC

Raw pmain126 Factorization

(5,25,59,295) 11801.142673801.3316236275736001. C322

SNFS Polynomial

Polynomial

Degree: 8
Murphy: 2.37e-17
Skew: 0.77556
Selected: Best

n: 2717053507347136818687068606113075532789482457145554721382366198112244236316691395383145312657468113630371909357130881755522332916017399635373720927840247174781483893433304116705727465437974384818835825163822664991049181156140812758688430029731646906809913305089565271288697971387725520486320024310304725584971967378827201
# 2^1475-1, difficulty: 355.22, skewness: 0.71
# cost: 1.11189e+22, est. time: 5294698.67 GHz days (not accurate yet!)
# Optimized skew: 0.77556 Murphy: 2.37e-17
skew: 0.77556
c8: 16
c6: 8
c4: 4
c2: 2
c0: 1
Y1: -1
Y0: 178405961588244985132285746181186892047843328
type: snfs