You don't. 41 is a Prime number. Prime numbers don't have factor trees, since they only have one prime factor.
39 3,13
69 3,23
83 is prime. No tree.
61 is already prime. It doesn't need a tree.
When the bottom branch consists entirely of prime numbers.
68 34,2 17,2,2 2^2 x 17 = 68
60 30,2 15,2,2 5,3,2,2 22 x 3 x 5 = 60
The factor tree is as follows: 114 57,2 19,3,2
no
You cannot really make a factor tree for 7 because it is already a prime number.
No.
yes
13 is a prime number. It doesn't have a tree because its only prime factor is itself.
No you cannot. You might want to try the factor tree for 27.
991 is already prime. No tree is required.
Since 61 is already prime, a factor tree is not necessary. The prime factorization of 51 is 3 x 17, which wouldn't make much of a tree. More like a factor shrub.
35 5,7