7^431+1

Open composite · C351

NFS Planning

GNFS Murphy estimate: 9.79e-24
SNFS Murphy score: 2.31e-17
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 2.90540

Identifiers

Target expression: 7^431+1
Target link: FactorDB page
Target ID: 1000000000016828599
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C351
Imported: Jun 03, 2026, 04:31 PM UTC

Raw pmain126 Factorization

(1) 863.14081781127. C351

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 2.31e-17
Skew: 2.90540
Selected: Best

n: 177622048173883443746702876544602370110331869222856045083240234851363797622093133957348819015352368158755631252708597937588652253373103521187261332078531154465974679145644657699177116202363128853658084105518894632155461754087706157066890926700631808034378228166989380324870395327216467303342433031170593906590114865103099812827871781835503337316228543
# 7^431+1, difficulty: 366.77, skewness: 2.30
# cost: 2.25667e+22, est. time: 10746050.81 GHz days (not accurate yet!)
# Optimized skew: 2.90540 Murphy: 2.31e-17
skew: 2.90540
c7: 1
c0: 343
Y1: -1
Y0: 24893071176241544900787221684958608586849291716964049
type: snfs