7^467-1

Open composite · C271

NFS Planning

GNFS Murphy estimate: 4.27e-19
SNFS Murphy score: 2.74e-18
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 2.21513

Identifiers

Target expression: 7^467-1
Target link: FactorDB page
Target ID: 1000000000018628815
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C271
Imported: Jun 03, 2026, 04:31 PM UTC

Raw pmain126 Factorization

(1) 12143.20549.1349212682263.8923463257770106964918323551292648486037.1369131107013221872915961091057009308871996187036065665729451809.C271

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 2.74e-18
Skew: 2.21513
Selected: Best

n: 1855486746889197078096502964978530013408264324573750129644504869171527084341416431261186143493174806260860511707722143907821794702404203055619404006418741874822264086245459241497667493144274979351688319133433311303489662880711811958988992092034758571155998829985764350969
# 7^467-1, difficulty: 396.35, skewness: 1.74
# cost: 1.30188e+23, est. time: 61994445.44 GHz days (not accurate yet!)
# Optimized skew: 2.21513 Murphy: 2.74e-18
skew: 2.21513
c7: 1
c0: -49
Y1: -1
Y0: 418377847259091645147530834859099334519176045887014771543
type: snfs