A prime number is number is a number that its only factors are 1 and itself. 

To find the prime factorization of 135, there are two different methods.

Method 1

Here, since 135 is 5 times 27, you can break 27 down into 3 x 3 x 3.

Method 2

This method uses a factor tree. Remember, a prime number can be a factor more than once. 135 ÷ 2 is not a whole number; 2 is not a factor.135 ÷ 3 =45

 

Here is a list of numbers that you can make either a factor tree or use method 1 to find the prime factorization of that number.

40

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