What is the Greatest Common Factor of 43215 and 43220?

Greatest common factor (GCF) of 43215 and 43220 is 5.

GCF(43215,43220) = 5

We will now calculate the prime factors of 43215 and 43220, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 43215 and 43220.

How to find the GCF of 43215 and 43220?

We will first find the prime factorization of 43215 and 43220. After we will calculate the factors of 43215 and 43220 and find the biggest common factor number .

Step-1: Prime Factorization of 43215

Prime factors of 43215 are 3, 5, 43, 67. Prime factorization of 43215 in exponential form is:

43215 = 3¹ × 5¹ × 43¹ × 67¹

Step-2: Prime Factorization of 43220

Prime factors of 43220 are 2, 5, 2161. Prime factorization of 43220 in exponential form is:

43220 = 2² × 5¹ × 2161¹

Step-3: Factors of 43215

List of positive integer factors of 43215 that divides 43215 without a remainder.

1, 3, 5, 15, 43, 67, 129, 201, 215, 335, 645, 1005, 2881, 8643, 14405

Step-4: Factors of 43220

List of positive integer factors of 43220 that divides 43215 without a remainder.

1, 2, 4, 5, 10, 20, 2161, 4322, 8644, 10805, 21610

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 43215 and 43220. The biggest common factor number is the GCF number.
So the greatest common factor 43215 and 43220 is 5.

Also check out the Least Common Multiple of 43215 and 43220