85 goes to 5 and 17.
It can't go anywhere from there
85
5,17
.........75
........./..\
........5x15
............/ \
...........3x5
The prime factorization of 85 is 17 x 5.
85
17,5
5 and 17
13 is already prime. It doesn't need a tree.
484 242,2 121,2,2 11,11,2,2
56 28,2 14,2,2 7,2,2,2
675 225,3 75,3,3 25,3,3,3 5,5,3,3,3
720 360,2 180,2,2 90,2,2,2 45,2,2,2,2 15,3,2,2,2,2 5,3,3,2,2,2,2
85 5,17
85 = 17 x 5
85 ^ 5 17 Thats all you can do.
77 7,11
15 3,5
85
1,270,2,135
23 is a prime number. No prime factorization. No tree.
13 is already prime. It doesn't need a tree.
188 94,2 47,2,2
39 3,13
275 55,5 11,5,5