6^487-1

Open composite · C320

NFS Planning

GNFS Murphy estimate: 6.15e-22
SNFS Murphy score: 9.20e-18
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 1.36422

Identifiers

Target expression: 6^487-1
Target link: FactorDB page
Target ID: 1100000000013095155
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C320
Imported: Jun 03, 2026, 04:31 PM UTC

Raw pmain126 Factorization

(1) 1949.11475426162619.164214755796153718781.6455463436321554277921.C320

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 9.20e-18
Skew: 1.36422
Selected: Best

n: 76872085967266565208840285312989314654152185146148133950391606815241461890302565530503389872490622949128490769921639482404612002596722992738149139430918588817098569335500186899036338405012494033658134040775874909753105486891889787639275771602625492125148672521660525200242517210799119936077143465102033690498447861079457
# 6^487-1, difficulty: 380.39, skewness: 1.08
# cost: 5.10875e+22, est. time: 24327386.16 GHz days (not accurate yet!)
# Optimized skew: 1.36422 Murphy: 9.20e-18
skew: 1.36422
c7: 16
c0: -27
Y1: -1
Y0: 1477602207273840622329353829895227690835664661525823488
type: snfs