Composite numbers chart before 18
Composite Numbers Before Calculator
|Enter a natural number to calculate the composites before it:
Ex.: 10, 100, 64, 1000, ... until 20,000.
Composite Numbers Before 18:
The number 18 is not a prime number because it is possible to express it as a product of prime factors. In other words, 18 can be divided by 1, by itself and at least by 2 and 3. So, 18 is a 'composite number'.
List of composite numbers before 18:
4, 6, 8, 9, 10, 12, 14, 15, 16, 18.
Here is the answer to questions like: Composite numbers chart before 18 . Get all the composite numbers from one to 18. Use the 'Composite Numbers Before Calculator' below to discover if any given number is composite or prime and get all the composites up to 18.
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Composite Number Definition
A composite number is a whole number that can be divided evenly by numbers other than 1 or itself.
A composite number n is a positive integer n>1 which is not prime (i.e., it can be divided by whole number other than 1 and itself).
- Example 1: 6 can be divided evenly by 2, so 6 is a composite number.
- Example 2: 5 cannot be divided evenly (except by 1 and 5), so is not a composite number (it is a so called prime number).