19 is a prime number. It can only be divided by 1 and 19 without any remainders. The only factors of 19 are 1 and 19. A number that has more than two factors is called a composite number.

Det. Lewis Stinker: Number 1! She’s special! She ain’t a composite or a Prime! So, let’s leave her alone! Det. Lewis Stinker: Number 2! It’s a Prime! It can only be divided by itself and 1.