12-

12^379-1

Open composite · C384

NFS Planning

GNFS Murphy estimate: 1.19e-25
SNFS Murphy score: 1.14e-18
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 1.11922

Identifiers

Target expression: 12^379-1
Target link: FactorDB page
Target ID: 1100000000013092207
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C384
Imported: Jun 03, 2026, 04:32 PM UTC

Raw pmain126 Factorization

(1) 723133.6213495235426688087. C384

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 1.14e-18
Skew: 1.11922
Selected: Best

n: 206892818638297713790431682126776310658934110904123720991866685501352077051595759545672031962437584474104093018223704335504002820374648456403981373907736924632257990219223281127288885051063673957531925699298720704218914365387393602048616554054556872189891691026245169961604945639004088685069837765180626237513630636512001134597670888026172769855757597224850587944312589701794286319687
# 12^379-1, difficulty: 409.01, skewness: 1.43
# cost: 2.69057e+23, est. time: 128122265.86 GHz days (not accurate yet!)
# Optimized skew: 1.11922 Murphy: 1.14e-18
skew: 1.11922
c7: 1
c0: -12
Y1: -18870668547844457769972080826950345531368943638112857227264
Y0: 1
type: snfs