575
115,5
23,5,5
Use a factor tree. 575 115,5 23,5,5 5 x 5 x 23 = 575
Factors of 575: 1, 5, 23, 25, 115, 575Factors of 23: 1, 23GCF (575, 23) = 23
The GCF is 1.
IT IS PRIME there is no factor tree
factor tree of 216
Factor tree of 204
You need at least two numbers to find a GCF.
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
Factor Tree of 20: ........20 ......../ \ .......4 5 ....../ \ .....2 2