Composite number is a whole number that can be made by multiplying other whole numbers.
Example:
10 can be made by 5 × 2 so is a composite number.
Table of Contents
Not Composite number
5 = 1 × 5, Is not composite number because 1 × 5 isn’t using other whole numbers
7 = 2 × 3.5, Is not composite number because 3.5 isn’t whole numbers.
All whole numbers above 1 are either composite or prime.
Table of Prime and Composite numbers
Table of Prime numbers and Composite numbers from 2 to 50
| Number | Composition | Prime or Composite |
| 2 | 1 × 2 | Prime |
| 3 | 1 × 3 | Prime |
| 4 | 2 × 2 | Composite |
| 5 | 1 × 5 | Prime |
| 6 | 2 × 3 | Composite |
| 7 | 1 × 7 | Prime |
| 8 | 2 × 4 | Composite |
| 9 | 3 × 3 | Composite |
| 10 | 2 × 5 | Composite |
| 11 | 1 × 11 | Prime |
| 12 | 2 × 6 | Composite |
| 13 | 1 × 13 | Prime |
| 14 | 2 × 7 | Composite |
| 15 | 3 × 5 | Composite |
| 16 | 2 × 8 | Composite |
| 17 | 1 × 17 | Prime |
| 18 | 2 × 9 | Composite |
| 19 | 1 × 19 | Prime |
| 20 | 2 × 10 | Composite |
| 21 | 3 × 7 | Composite |
| 22 | 2 × 11 | Composite |
| 23 | 1 × 23 | Prime |
| 24 | 2 × 12 | Composite |
| 25 | 5 × 5 | Composite |
| 26 | 2 × 13 | Composite |
| 27 | 3 × 9 | Composite |
| 28 | 2 × 14 | Composite |
| 29 | 1 × 29 | Prime |
| 30 | 2 × 15 | Composite |
| 31 | 1 × 31 | Prime |
| 32 | 2 × 16 | Composite |
| 33 | 3 × 11 | Composite |
| 34 | 2 × 17 | Composite |
| 35 | 5 × 7 | Composite |
| 36 | 2 × 18 | Composite |
| 37 | 1 × 37 | Prime |
| 38 | 2 × 19 | Composite |
| 39 | 3 × 13 | Composite |
| 40 | 2 × 20 | Composite |
| 41 | 1 × 41 | Prime |
| 42 | 2 × 21 | Composite |
| 43 | 1 × 43 | Prime |
| 44 | 2 × 22 | Composite |
| 45 | 3 × 15 | Composite |
| 46 | 2 × 23 | Composite |
| 47 | 1 × 47 | Prime |
| 48 | 2 × 24 | Composite |
| 49 | 7 × 7 | Composite |
| 50 | 2 × 25 | Composite |