What is the Greatest Common Factor of 67215 and 67220?

Greatest common factor (GCF) of 67215 and 67220 is 5.

GCF(67215,67220) = 5

We will now calculate the prime factors of 67215 and 67220, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 67215 and 67220.

How to find the GCF of 67215 and 67220?

We will first find the prime factorization of 67215 and 67220. After we will calculate the factors of 67215 and 67220 and find the biggest common factor number .

Step-1: Prime Factorization of 67215

Prime factors of 67215 are 3, 5, 4481. Prime factorization of 67215 in exponential form is:

67215 = 3¹ × 5¹ × 4481¹

Step-2: Prime Factorization of 67220

Prime factors of 67220 are 2, 5, 3361. Prime factorization of 67220 in exponential form is:

67220 = 2² × 5¹ × 3361¹

Step-3: Factors of 67215

List of positive integer factors of 67215 that divides 67215 without a remainder.

1, 3, 5, 15, 4481, 13443, 22405

Step-4: Factors of 67220

List of positive integer factors of 67220 that divides 67215 without a remainder.

1, 2, 4, 5, 10, 20, 3361, 6722, 13444, 16805, 33610

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 67215 and 67220. The biggest common factor number is the GCF number.
So the greatest common factor 67215 and 67220 is 5.

Also check out the Least Common Multiple of 67215 and 67220