12-

12^395-1

Open composite · C310

NFS Planning

GNFS Murphy estimate: 2.34e-21
SNFS Murphy score: 5.19e-17
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 8
SNFS skew: 0.31604

Identifiers

Target expression: 12^395-1
Target link: FactorDB page
Target ID: 1100000000013092246
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C310
Imported: Jun 03, 2026, 04:32 PM UTC

Raw pmain126 Factorization

(1,5,79) 5531.61554181151.10443328287841. C310

SNFS Polynomial

Polynomial

Degree: 8
Murphy: 5.19e-17
Skew: 0.31604
Selected: Best

n: 1305755320721237441449550693993967582650769369470948083927904402798315744217055190849547566807161001890375464559739081992846650823161779888312971074432838508972242432872157867905033387432414024628800382678512720966368954163624464658784214005684444210491947733961367344955195786048489727354985852267103911330321
# 12^395-1, difficulty: 341.02, skewness: 0.29
# cost: 4.57261e+21, est. time: 2177432.83 GHz days (not accurate yet!)
# Optimized skew: 0.31604 Murphy: 5.19e-17
skew: 0.31604
c8: 20736
c6: 1728
c4: 144
c2: 12
c0: 1
Y1: -1
Y0: 1224809639974238708818962962512535510581248
type: snfs