What is the Greatest Common Factor of 72189 and 72207?

Greatest common factor (GCF) of 72189 and 72207 is 9.

GCF(72189,72207) = 9

We will now calculate the prime factors of 72189 and 72207, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 72189 and 72207.

How to find the GCF of 72189 and 72207?

We will first find the prime factorization of 72189 and 72207. After we will calculate the factors of 72189 and 72207 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 72207

Prime factors of 72207 are 3, 71, 113. Prime factorization of 72207 in exponential form is:

72207 = 3² × 71¹ × 113¹

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 72207

List of positive integer factors of 72207 that divides 72189 without a remainder.

1, 3, 9, 71, 113, 213, 339, 639, 1017, 8023, 24069

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 72189 and 72207. The biggest common factor number is the GCF number.
So the greatest common factor 72189 and 72207 is 9.

Also check out the Least Common Multiple of 72189 and 72207