2+(odd)

2^1363+1

Open composite · C336

NFS Planning

GNFS Murphy estimate: 7.26e-23
SNFS Murphy score: 9.33e-19
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 1.55378

Identifiers

Target expression: 2^1363+1
Target link: FactorDB page
Target ID: 1000000000012151387
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C336
Imported: Jun 03, 2026, 04:29 PM UTC

Raw pmain126 Factorization

(1,29,47) 19332793.1919221219.7964481353230123.187617535068488069953.C336

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 9.33e-19
Skew: 1.55378
Selected: Best

n: 144170070326690213254653045473045482856715249397340161232398697694221302896798565038257404921860044652367846978869077664508940235542631341346379904135680921916068094258242549386500635824883865954709068430853429986208910967744323861814558135971693221991252043009899218409872765698037146611581942021850728493642783336032302362430834168187
# 2^1363+1, difficulty: 410.91, skewness: 1.22
# cost: 2.99614e+23, est. time: 142673467.77 GHz days (not accurate yet!)
# Optimized skew: 1.55378 Murphy: 9.33e-19
skew: 1.55378
c7: 1
c0: 4
Y1: -1
Y0: 50216813883093446110686315385661331328818843555712276103168
type: snfs