A composite number is any positive integer that is not prime with one exception: number 1. So let's Originally Answered: What is the composite number ?. A composite number is a positive integer that can be formed by multiplying two smaller positive integers. Equivalently, it is a positive integer that has at least one . An interactive math lesson about prime and composite numbers.
Today we are going to learn about prime numbers and composite numbers. Composite numbers are numbers (greater than 1) that are not. The first few composite numbers (sometimes called "composites" for short) are 4, 6, 8, 9, 10, 12, 14, 15, 16, (OEIS A), whose prime decompositions are. The numbers 4=22,6,8,, are all divisible by 2, so composite. There are −42+1=49 of these, leaving 99−49=50 other numbers.
The following chart lists all of the prime and composite numbers from 1 to The prime numbers are in yellow while the composite numbers are in red. 1. 2. 3. Here's a chart with the primes and composites from Here's a chart with all the numbers from Show only 1, No, 1 is neither prime nor composite.