2+(odd)

2^1351+1

Open composite · C336

NFS Planning

GNFS Murphy estimate: 7.26e-23
SNFS Murphy score: 4.49e-17
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 6
SNFS skew: 1.41589

Identifiers

Target expression: 2^1351+1
Target link: FactorDB page
Target ID: 1000000000012151375
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C336
Imported: Jun 03, 2026, 04:29 PM UTC

Raw pmain126 Factorization

(1,7,193) 242396463233. C336

SNFS Polynomial

Polynomial

Degree: 6
Murphy: 4.49e-17
Skew: 1.41589
Selected: Best

n: 375612679703643584994603723831759258463012795218198199679892292808001423658806647889539455134328919110979936648599438528224677699087961135730781238992714543831920073097030004691689748156342442974512770621412987626983594714822925881051592009300444088150606704302877435178801183424080407083185378841522887077650039129697224936938396761347
# 2^1351+1, difficulty: 348.59, skewness: 1.00
# cost: 7.36524e+21, est. time: 3507255.12 GHz days (not accurate yet!)
# Optimized skew: 1.41589 Murphy: 4.49e-17
skew: 1.41589
c6: 1
c5: -1
c4: 1
c3: -1
c2: 1
c1: -1
c0: 1
Y1: -1
Y0: 12554203470773361527671578846415332832204710888928069025792
type: snfs