2^1481-1

Open composite · C311

NFS Planning

GNFS Murphy estimate: 2.04e-21
SNFS Murphy raw: 5.43e-20
SNFS Murphy normalized (deg 6): 3.39e-20
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 1.72676

Identifiers

Target expression: 2^1481-1
Target link: FactorDB page
Target ID: 1000000000000001481
Target changed: Before 6/8/2026
Parent query: Same as target
Parent ID: -
Cofactor token: C311
Imported: Jun 07, 2026, 01:40 AM UTC

Raw pmain126 Factorization

71089.3915278233.12787706913743.3993419580376129303010329.8268138870080189511875976090034105337.8348981870260729786758008817506660899281935231.C311

SNFS Polynomial

Polynomial

Degree: 7
Raw Murphy: 5.43e-20
Normalized (deg 6): 3.39e-20
Skew: 1.72676
Selected: Best

n: 68183555783241978866749207017148205773196204414709009778495468211452739665770824241357375860606034755817182123638479172094566553404213610248277897756474099572701080335924600597646311022133208204555459372663730747689064128540886080998687425050200390352638252393958206043684470494804256869350877496809211177677447
# 2^1481-1, difficulty: 446.73, skewness: 1.35
# cost: 2.16661e+24, est. time: 1031719763.02 GHz days (not accurate yet!)
# Optimized skew: 1.72676 Murphy: 5.43e-20
skew: 1.72676
c7: 1
c0: -8
Y1: -1
Y0: 6582018229284824168619876730229402019930943462534319453394436096
type: snfs