80
40,2
20,2,2
10,2,2,2
5,2,2,2,2
A factor free is a diagram showing the prime factorization of a number.
6 is not a factor of 80. 6 is not a prime number.
A Factor Tree
a factor tree
The greatest common factor of 54 and 99 is 9, which is not prime. The greatest common factor of 80 and 114 is 2, which is prime.
a factor tree
One such is a factor tree.
factor tree
The only prime factor these numbers share is 2. It is the only prime factor of 64, which is 2 to the 6th power. The hcf is 16, but that is not a prime.
80 40,2 20,2,2 10,2,2,2 5,2,2,2,2
45: 3 5 80: 2 5
A factor tree.