168 = 2 x 2 x 2 x 3 x 7
a prime factorization tree
23 x 3 x 7 = 168
168 84,2 42,2,2 21,2,2,2 7,3,2,2,2
612 306,2 153,2,2 51,3,2,2 17,3,3,2,2
96 48,2 24,2,2 12,2,2,2 6,2,2,2,2 3,2,2,2,2,2
the prime factorization of 168 is: 2squared x 2 x 3 x 7
1997 is already prime; no tree.
2x2x2x3x7
a prime factorization tree
33 11,3
350=2x5x5x7
51 3,17
23 x 3 x 7 = 168
A and 168 have no common factors other than one.
The prime factorization of 97 is 97 itself, as it is a prime number and cannot be divided evenly by any other numbers. Therefore, there is no prime factorization tree for the number 97.
50 25,2 5,5,2
131 is already prime. No tree.