What is the Greatest Common Factor of 19647 and 19664?

Greatest common factor (GCF) of 19647 and 19664 is 1.

GCF(19647,19664) = 1

We will now calculate the prime factors of 19647 and 19664, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 19647 and 19664.

How to find the GCF of 19647 and 19664?

We will first find the prime factorization of 19647 and 19664. After we will calculate the factors of 19647 and 19664 and find the biggest common factor number .

Step-1: Prime Factorization of 19647

Prime factors of 19647 are 3, 37, 59. Prime factorization of 19647 in exponential form is:

19647 = 3² × 37¹ × 59¹

Step-2: Prime Factorization of 19664

Prime factors of 19664 are 2, 1229. Prime factorization of 19664 in exponential form is:

19664 = 2⁴ × 1229¹

Step-3: Factors of 19647

List of positive integer factors of 19647 that divides 19647 without a remainder.

1, 3, 9, 37, 59, 111, 177, 333, 531, 2183, 6549

Step-4: Factors of 19664

List of positive integer factors of 19664 that divides 19647 without a remainder.

1, 2, 4, 8, 16, 1229, 2458, 4916, 9832

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 19647 and 19664. The biggest common factor number is the GCF number.
So the greatest common factor 19647 and 19664 is 1.

Also check out the Least Common Multiple of 19647 and 19664