6^511-1

Open composite · C337

NFS Planning

GNFS Murphy estimate: 6.35e-23
SNFS Murphy score: 9.07e-17
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 6
SNFS skew: 1.41209

Identifiers

Target expression: 6^511-1
Target link: FactorDB page
Target ID: 1100000000024699695
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C337
Imported: Jun 03, 2026, 04:31 PM UTC

Raw pmain126 Factorization

(1,7,73) C337

SNFS Polynomial

Polynomial

Degree: 6
Murphy: 9.07e-17
Skew: 1.41209
Selected: Best

n: 1208260202789852431386657113831555869913363993937596637426858735953545173541510647920426428323580342379143979782939191112477269208538646619168378183373108804602357029998163563791116027417399819326023471676888939507052417916902281070887424959133421024057147803879572319100861225652234881439153950182750474705276437440073274599576725316731
# 6^511-1, difficulty: 340.83, skewness: 1.00
# cost: 4.51757e+21, est. time: 2151226.13 GHz days (not accurate yet!)
# Optimized skew: 1.41209 Murphy: 9.07e-17
skew: 1.41209
c6: 1
c5: 1
c4: 1
c3: 1
c2: 1
c1: 1
c0: 1
Y1: -1
Y0: 638324153542299148846280854514738362441007133779155746816
type: snfs