7^439+1

Open composite · C313

NFS Planning

GNFS Murphy estimate: 1.57e-21
SNFS Murphy score: 1.67e-17
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 2.20444

Identifiers

Target expression: 7^439+1
Target link: FactorDB page
Target ID: 1000000000016828647
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C313
Imported: Jun 03, 2026, 04:31 PM UTC

Raw pmain126 Factorization

(1) 4391.45707803.16963432192772463137302984987338923978948637001. C313

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 1.67e-17
Skew: 2.20444
Selected: Best

n: 3654955284807971115281372797894069132619596858296206731529330981875678848944900719185477797090935726549261914697278927475256073831103461635211509903998344244187879937947985253677766372224312399288041055156044465508403643328795442855834558792219880331317186553436183609364678915036024023668522390716482715484020291
# 7^439+1, difficulty: 372.69, skewness: 1.74
# cost: 3.22527e+22, est. time: 15358442.70 GHz days (not accurate yet!)
# Optimized skew: 2.20444 Murphy: 1.67e-17
skew: 2.20444
c7: 1
c0: 49
Y1: -1
Y0: 174251498233690814305510551794710260107945042018748343
type: snfs