Prime Factorization 28 and 54

Prime factorization of 28 and 54
I use a factor tree in order to find the prime numbers multiplied together which equals 28 and I draw a factor tree for 54

The prime factorization of 28 equals 2 x 2 x 7
The prime numbers multiplied together which equal 54 are 2 x 3x 3x 3x 3