What is the Greatest Common Factor of 72170 and 72178?

Greatest common factor (GCF) of 72170 and 72178 is 2.

GCF(72170,72178) = 2

We will now calculate the prime factors of 72170 and 72178, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 72170 and 72178.

How to find the GCF of 72170 and 72178?

We will first find the prime factorization of 72170 and 72178. After we will calculate the factors of 72170 and 72178 and find the biggest common factor number .

Step-1: 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-2: Prime Factorization of 72178

Prime factors of 72178 are 2, 151, 239. Prime factorization of 72178 in exponential form is:

72178 = 2¹ × 151¹ × 239¹

Step-3: Factors of 72170

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

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

Step-4: Factors of 72178

List of positive integer factors of 72178 that divides 72170 without a remainder.

1, 2, 151, 239, 302, 478, 36089

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 72170 and 72178. The biggest common factor number is the GCF number.
So the greatest common factor 72170 and 72178 is 2.

Also check out the Least Common Multiple of 72170 and 72178