# What is the smallest odd composite number?

3 x 3 = 9

A composite number is a number with more than 2 positive integer factors. The smallest such odd number is 9.

### What are odd composite numbers?

An odd number is an integer that is not evenly divisible by 2. A composite number is a positive number that has divisors other than 1 and itself. So any odd number greater than 1 that is not prime would be a composite odd number. For example, 9, 15, 21, and 25 are odd composite number because the are odd and they have divisors. 1, 3, 5, and 7 are not composite because they are…