It is: 4
It is: 1
That is not what prime factorization is for.
Whatever you use, you need at least two numbers to find a GCF.
Prime factorization of 288 = 2x2x2x2x2x3x3Prime factorization of 40 = 2x2x2x5Prime factorization of 24 = 2x2x2x32x2x2 = 8, the GCF
55 3*55 = 165 2*55 = 110
Their gcf is just 1
It is: 4
It is: 1
It is: 69
You need at least two numbers to find a GCF. The prime factorization of 207 is 3 x 3 x 23.
41 is a prime number which makes 41 the gcf of 41 and 82
It is: 4
The greatest common factor of 165 and 180 is 5. The prime factorization of 165 is 11*3*5. The prime factors of 180 are 2*2*5*9.
At least two or more numbers are needed to find their GCF
That is not what prime factorization is for.
53 is already prime. 2 x 43 = 86 No common prime factors; the GCF is 1.