2^1481-1

Open composite · C311

NFS Planning

GNFS Murphy estimate: 2.04e-21
SNFS Murphy score: 8.25e-20
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 8
SNFS skew: 1.13638

Identifiers

Target expression: 2^1481-1
Target link: FactorDB page
Target ID: 1000000000000001481
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C311
Imported: Jun 03, 2026, 04:29 PM UTC

Raw pmain126 Factorization

71089.3915278233.12787706913743.3993419580376129303010329.8268138870080189511875976090034105337.8348981870260729786758008817506660899281935231.C311

SNFS Polynomial

Polynomial

Degree: 8
Murphy: 8.25e-20
Skew: 1.13638
Selected: Best

n: 68183555783241978866749207017148205773196204414709009778495468211452739665770824241357375860606034755817182123638479172094566553404213610248277897756474099572701080335924600597646311022133208204555459372663730747689064128540886080998687425050200390352638252393958206043684470494804256869350877496809211177677447
# 2^1481-1, difficulty: 445.83, skewness: 1.09
# cost: 2.06367e+24, est. time: 982701185.75 GHz days (not accurate yet!)
# Optimized skew: 1.13638 Murphy: 8.25e-20
skew: 1.13638
c8: 1
c0: -2
Y1: -49039857307708443467467104868809893875799651909875269632
Y0: 1
type: snfs