I believe the answer for that one is Prime. Prime are numbers that can't or don't have two multiples to get it. Like 13, 4x3 is 12, and 2x6 is twelve, but none gets to 13. Composite numbers are numbers that do have factors or multiples.Like 4 has 2x2. Or 100 has 10x10, 5x20, and many more. The answer to your question is that it's prime.