2+(odd)

2^1379+1

Open composite · C328

NFS Planning

GNFS Murphy estimate: 2.11e-22
SNFS Murphy score: 2.33e-17
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 6
SNFS skew: 1.41936

Identifiers

Target expression: 2^1379+1
Target link: FactorDB page
Target ID: 1000000000012151403
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C328
Imported: Jun 03, 2026, 04:29 PM UTC

Raw pmain126 Factorization

(1,7,197) 4057019.159244643740412457739. C328

SNFS Polynomial

Polynomial

Degree: 6
Murphy: 2.33e-17
Skew: 1.41936
Selected: Best

n: 2364365121109237701566498526684092003057031380283040189975053331462112934569992275003474517789836349529043688208922529730858280104164721993530915078836225034123306573375173900411550449448545897440274798370453559228296177802611455011844170431743692020146770079428051853858731181207571377520764981017500642933296489796682396570411
# 2^1379+1, difficulty: 355.82, skewness: 1.00
# cost: 1.15404e+22, est. time: 5495442.89 GHz days (not accurate yet!)
# Optimized skew: 1.41936 Murphy: 2.33e-17
skew: 1.41936
c6: 1
c5: -1
c4: 1
c3: -1
c2: 1
c1: -1
c0: 1
Y1: -1
Y0: 200867255532373784442745261542645325315275374222849104412672
type: snfs