Factor each number until all the factors are prime 30, 27, 48, 500

First you need to know what a prime number is, a prime number is when you can only multiply 1 and itself. Then I think you do it like this to find the prime number:
30÷10=3 which is a prime number.
27÷3=9 which is a prime number.
48÷16= 3 which is a prime number.
500 is already a prime number,
Hope I helped!