What is the Greatest Common Factor of 72181 and 72189?

Greatest common factor (GCF) of 72181 and 72189 is 1.

GCF(72181,72189) = 1

We will now calculate the prime factors of 72181 and 72189, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 72181 and 72189.

How to find the GCF of 72181 and 72189?

We will first find the prime factorization of 72181 and 72189. After we will calculate the factors of 72181 and 72189 and find the biggest common factor number .

Step-1: Prime Factorization of 72181

Prime factors of 72181 are 19, 29, 131. Prime factorization of 72181 in exponential form is:

72181 = 19¹ × 29¹ × 131¹

Step-2: 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-3: Factors of 72181

List of positive integer factors of 72181 that divides 72181 without a remainder.

1, 19, 29, 131, 551, 2489, 3799

Step-4: Factors of 72189

List of positive integer factors of 72189 that divides 72181 without a remainder.

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

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 72181 and 72189. The biggest common factor number is the GCF number.
So the greatest common factor 72181 and 72189 is 1.

Also check out the Least Common Multiple of 72181 and 72189