A prime number is a number with exactly two factors. Prime numbers are only divisible by 1 and itself. Another way to think of prime numbers is that they are only ever found as answers in their own ...

A root is the opposite of a power. The root of a number is another number that can be multiplied by itself to get the first number. As 2 squared is 4, then a square root of 4 must be 2: \(2^2 = 4\).