The prime factorization.
With a factor tree, yes.
If completed correctly, the bottom branch of a factor tree will be the prime factorization of the number at the top.
13 is already prime, no tree required.
A factor tree
there is NO factor tree (prime factorization) of 29.
Use a factor tree. 87 3,29
When you want to find the prime factorization of a composite number.
50 25,2 5,5,2