What is the Greatest Common Factor of 72157 and 72170?

Greatest common factor (GCF) of 72157 and 72170 is 1.

GCF(72157,72170) = 1

We will now calculate the prime factors of 72157 and 72170, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 72157 and 72170.

How to find the GCF of 72157 and 72170?

We will first find the prime factorization of 72157 and 72170. After we will calculate the factors of 72157 and 72170 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 72170

Prime factors of 72170 are 2, 5, 7, 1031. Prime factorization of 72170 in exponential form is:

72170 = 2¹ × 5¹ × 7¹ × 1031¹

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 72170

List of positive integer factors of 72170 that divides 72157 without a remainder.

1, 2, 5, 7, 10, 14, 35, 70, 1031, 2062, 5155, 7217, 10310, 14434, 36085

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 72157 and 72170. The biggest common factor number is the GCF number.
So the greatest common factor 72157 and 72170 is 1.

Also check out the Least Common Multiple of 72157 and 72170