I used a factor tree.
165
55,3
11,5,3
The prime factor decomposition of 168 is: 23 x 3 x 7
The prime factorization of 165 is 3 x 5 x 11
Common factors of 165 and 193 are: 1.
35 can be a factor, but it is not prime.
There is no factorization. 37 is a prime number.37 is already prime. Its only prime factor is itself.
3 is the smallest prime factor of 165.
165 55,3 11,5,3
It's a prime factor.
3 x 5 x 11 = 165
No, 144 and 165 are not relatively prime. For them to be relatively prime, the number 1 could be their only common factor, but they also have 3 as a common factor.
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.
3 x 5 x 11
the greatest com man factor is 33
2 x 5 x 13 = 130 3 x 5 x 11 = 165 The common prime factor is 5.
You might look for some obvious factor first. In this case, since it ends with 5, it is divisible by 5. Divide 165 / 5 to get the other factor. Then see whether this other factor can be divided into smaller factors. Try small factors (2, 3, 5, 7) first.
Their gcf is just 1
The two numbers are co-prime so their GCF is 1.