Place the number you want to factor at the top of the page. Divide it by prime numbers until all the factors are prime. Example: 210
210
105,2
35,3,2
7,5,3,2
2 x 3 x 5 x 7 = 210
No.
No.
Prime numbers don't have factor trees. So if you can create a tree, your number's composite.
196 98,2 49,2,2 7,7,2,2
64 32,2 16,2,2 8,2,2,2 4,2,2,2,2 2,2,2,2,2,2
factor tree of 216
IT IS PRIME there is no factor tree
Factor tree of 204
The factor tree of 50:5025,25,5,25025,25,5,2
21
83 is prime. No tree.
The prime factor tree of 280 is:140,270,2,235,2,2,27,5,2,2,2