What is the Greatest Common Factor of 72189 and 72203?

Greatest common factor (GCF) of 72189 and 72203 is 1.

GCF(72189,72203) = 1

We will now calculate the prime factors of 72189 and 72203, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 72189 and 72203.

How to find the GCF of 72189 and 72203?

We will first find the prime factorization of 72189 and 72203. After we will calculate the factors of 72189 and 72203 and find the biggest common factor number .

Step-1: Prime Factorization of 72189

Prime factors of 72189 are 3, 13, 617. Prime factorization of 72189 in exponential form is:

72189 = 3² × 13¹ × 617¹

Step-2: Prime Factorization of 72203

Prime factors of 72203 are 103, 701. Prime factorization of 72203 in exponential form is:

72203 = 103¹ × 701¹

Step-3: Factors of 72189

List of positive integer factors of 72189 that divides 72189 without a remainder.

1, 3, 9, 13, 39, 117, 617, 1851, 5553, 8021, 24063

Step-4: Factors of 72203

List of positive integer factors of 72203 that divides 72189 without a remainder.

1, 103, 701

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 72189 and 72203. The biggest common factor number is the GCF number.
So the greatest common factor 72189 and 72203 is 1.

Also check out the Least Common Multiple of 72189 and 72203