6^457-1

Open composite · C250

NFS Planning

GNFS Murphy estimate: 7.06e-18
SNFS Murphy score: 6.36e-17
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 1.32426

Identifiers

Target expression: 6^457-1
Target link: FactorDB page
Target ID: 1100000000013095096
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C250
Imported: Jun 03, 2026, 04:31 PM UTC

Raw pmain126 Factorization

(1) 5442127504257793171.115018225842022485782679531180268674379633.7504583965646816343215341562816756714447130527.C250

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 6.36e-17
Skew: 1.32426
Selected: Best

n: 1755049713812029828048870841209900613531115384230158156658191153636514568094112241363582170127749774861122935942655650340610011946586430367051359618292130024959534567055378321015532649441285247016977596853471361201969628896345264395786732413665629167
# 6^457-1, difficulty: 355.62, skewness: 1.67
# cost: 1.13971e+22, est. time: 5427166.93 GHz days (not accurate yet!)
# Optimized skew: 1.32426 Murphy: 6.36e-17
skew: 1.32426
c7: 1
c0: -36
Y1: -380041719977839666236973721680871319659378770968576
Y0: 1
type: snfs