12-

12^365-1

Open composite · C311

NFS Planning

GNFS Murphy estimate: 2.04e-21
SNFS Murphy score: 2.50e-16
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 8
SNFS skew: 0.32304

Identifiers

Target expression: 12^365-1
Target link: FactorDB page
Target ID: 1100000000013092163
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C311
Imported: Jun 03, 2026, 04:32 PM UTC

Raw pmain126 Factorization

(1,5,73) C311

SNFS Polynomial

Polynomial

Degree: 8
Murphy: 2.50e-16
Skew: 0.32304
Selected: Best

n: 58399892295546424257935667362962251747194404516008221647423126601786025607519537961901173889818292370016215864750478695892209788622233528186802150244270707441799605482920950782145599298438214296820099664117441025567026231498494324822098170801282675684894780207646701186884051670773738203579108402945410598321141
# 12^365-1, difficulty: 315.12, skewness: 0.29
# cost: 8.51753e+20, est. time: 405596.43 GHz days (not accurate yet!)
# Optimized skew: 0.32304 Murphy: 2.50e-16
skew: 0.32304
c8: 20736
c6: 1728
c4: 144
c2: 12
c0: 1
Y1: -1
Y0: 708801874985091845381344307009569161216
type: snfs