12^328+1

Open composite · C301

NFS Planning

GNFS Murphy estimate: 7.77e-21
SNFS Murphy score: 6.97e-17
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 1.79720

Identifiers

Target expression: 12^328+1
Target link: FactorDB page
Target ID: 1100000000009442946
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C301
Imported: Jun 03, 2026, 04:32 PM UTC

Raw pmain126 Factorization

(8) 165313.519553.18600629401508971409521347691601393. C301

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 6.97e-17
Skew: 1.79720
Selected: Best

n: 1363120440094606235488291036030390107483473886954178294377496020164136990202347470964332782696042818246956634605426288647315057099279008961287852790323541721971913502031636633667493342538476006652547625268429271275461796561212366035753297844588811588675173954867243991121019948785836322053072250076113
# 12^328+1, difficulty: 355.05, skewness: 1.43
# cost: 1.10061e+22, est. time: 5241016.12 GHz days (not accurate yet!)
# Optimized skew: 1.79720 Murphy: 6.97e-17
skew: 1.79720
c7: 1
c0: 12
Y1: -1
Y0: 526645726273272556326827851582324440099950960836608
type: snfs