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
83 is prime. No tree.
61 is already prime. It doesn't need a tree.
Well, honey, to make a factor tree for 69, you'll need to break it down into its prime factors. 69 can be broken down into 3 and 23, which are both prime numbers. So, the factor tree for 69 would have 3 and 23 as its branches. Hope that clears things up for ya!
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
no
The factor tree is as follows: 114 57,2 19,3,2
No.
yes
991 is already prime. No tree is required.
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.
15,3 3,5,3
119 7,17
39 3,13