Science Fair Project Encyclopedia
Composite number
A composite number is a positive integer that can be factored as a product of two or more prime numbers. Every integer except one and zero is either a prime number or a composite number. The integer 14 is a composite number because it can be factored as 2 × 7.
Properties
- All even numbers greater than 2 are composite numbers.
- All composite numbers are non-primes.
- The smallest composite number is 4.
- One has
for all composite numbers 
greater than 4 (Wilson's theorem).
- Also,
for all composite numbers greater than 4 (composite theorem).
10-26-2009 08:16:03
The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details
The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details