What is the Greatest Common Factor of 72157 and 72171?

Greatest common factor (GCF) of 72157 and 72171 is 1.

GCF(72157,72171) = 1

We will now calculate the prime factors of 72157 and 72171, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 72157 and 72171.

How to find the GCF of 72157 and 72171?

We will first find the prime factorization of 72157 and 72171. After we will calculate the factors of 72157 and 72171 and find the biggest common factor number .

Step-1: Prime Factorization of 72157

Prime factors of 72157 are 59, 1223. Prime factorization of 72157 in exponential form is:

72157 = 59¹ × 1223¹

Step-2: Prime Factorization of 72171

Prime factors of 72171 are 3, 11. Prime factorization of 72171 in exponential form is:

72171 = 3⁸ × 11¹

Step-3: Factors of 72157

List of positive integer factors of 72157 that divides 72157 without a remainder.

1, 59, 1223

Step-4: Factors of 72171

List of positive integer factors of 72171 that divides 72157 without a remainder.

1, 3, 9, 11, 27, 33, 81, 99, 243, 297, 729, 891, 2187, 2673, 6561, 8019, 24057

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 72157 and 72171. The biggest common factor number is the GCF number.
So the greatest common factor 72157 and 72171 is 1.

Also check out the Least Common Multiple of 72157 and 72171