2+(odd)

2^1435+1

Open composite · C230

NFS Planning

GNFS Murphy estimate: 1.02e-16
SNFS Murphy score: 5.43e-17
Preferred method: Similar
SNFS possible: Yes
SNFS degree: 8
SNFS skew: 0.77315

Identifiers

Target expression: 2^1435+1
Target link: FactorDB page
Target ID: 1000000000012151459
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C230
Imported: Jun 03, 2026, 04:29 PM UTC

Raw pmain126 Factorization

(1,5,7,35,41,205,287) 203771.543024560681.714908060219675989825758320025177708575041.C230

SNFS Polynomial

Polynomial

Degree: 8
Murphy: 5.43e-17
Skew: 0.77315
Selected: Best

n: 85356428971180324597759049510540657846652348531913829000114643535261499288851976156797530077558654461196581450993581802845606453909286374049357046743955309179996775566644538193357283999307306531473856665822196821900669587274026761
# 2^1435+1, difficulty: 345.58, skewness: 0.71
# cost: 6.09824e+21, est. time: 2903924.05 GHz days (not accurate yet!)
# Optimized skew: 0.77315 Murphy: 5.43e-17
skew: 0.77315
c8: 16
c6: -8
c4: 4
c2: -2
c0: 1
Y1: -1
Y0: 11150372599265311570767859136324180752990208
type: snfs