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HTML Entity Detail
HTML Entity - Natural Numbers
Natural Numbers is a letterlike mathematical symbols representing number sets and special functions. This HTML entity enables web developers to display this character reliably across all browsers without encoding issues.
Symbol preview
ℕ
Unicode
U+2115
HTML entity
ℕ
CSS code
\2115
Usage Examples
Use this HTML entity in mathematical notation for number sets like ℝ (real numbers) and ℕ (natural numbers), and physics constants.
Related Entities
Common Mistakes
⚠️
Mistake: Using N instead of ℕ for natural numbers in math
Fix: Use ℕ (ℕ) for the set of natural numbers. The plain letter N can be ambiguous. Use double-struck ℕ for clear mathematical notation.
⚠️
Mistake: Not specifying whether ℕ includes zero
Fix: Some definitions of ℕ include 0, others start at 1. Always clarify: ℕ = {1, 2, 3, ...} or ℕ₀ = {0, 1, 2, ...}.
Natural Numbers
Select any code to highlight it before copying.
Category: Letterlike Symbols
| Unicode | U+2115 |
|---|---|
| Hex Code | ℕ |
| HTML Code | ℕ |
| HTML Entity | ℕ |
| CSS Code | \2115 |
| Windows Shortcut | |
| Mac Shortcut | |
HTML code example
CSS code example
Last updated: 21 Jun 2026
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