What is a composite number? Definition, examples.

Composite numbers definition

Examples of composite numbers. Examples of numbers that are not composite, but prime.

All the composite numbers, up to 100:

There is no known simple formula that sets all of the prime numbers apart from composites.


What is a prime number?

What is a composite number?

Prime numbers up to 1,000

Prime numbers up to 10,000

Sieve of Eratosthenes

Euclid's algorithm

Simplifying ordinary (common) math fractions (reducing to lower terms): steps to follow and examples