2+(odd)

2^1319+1

Open composite · C357

NFS Planning

GNFS Murphy estimate: 4.39e-24
SNFS Murphy score: 2.70e-18
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 1.05891

Identifiers

Target expression: 2^1319+1
Target link: FactorDB page
Target ID: 1000000000012151343
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C357
Imported: Jun 03, 2026, 04:29 PM UTC

Raw pmain126 Factorization

(1) 11142913.741565793503625917030973189850113. C357

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 2.70e-18
Skew: 1.05891
Selected: Best

n: 461630609093549725738010520451206973403289744373989484154244152681018119998456926853163360203627106451236313027003470837255071817224802179356316959114148234790393647162995882484046642484375975679526205448896545958654591943160659778027161786149844196602535915122210163878520354348992108386101764789622472927788455702631895012302387754774108088938836809830827
# 2^1319+1, difficulty: 397.06, skewness: 1.35
# cost: 1.35629e+23, est. time: 64585376.18 GHz days (not accurate yet!)
# Optimized skew: 1.05891 Murphy: 2.70e-18
skew: 1.05891
c7: 1
c0: 8
Y1: -392318858461667547739736838950479151006397215279002157056
Y0: 1
type: snfs