What is the Greatest Common Factor of 13215 and 13220?

Greatest common factor (GCF) of 13215 and 13220 is 5.

GCF(13215,13220) = 5

We will now calculate the prime factors of 13215 and 13220, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 13215 and 13220.

How to find the GCF of 13215 and 13220?

We will first find the prime factorization of 13215 and 13220. After we will calculate the factors of 13215 and 13220 and find the biggest common factor number .

Step-1: Prime Factorization of 13215

Prime factors of 13215 are 3, 5, 881. Prime factorization of 13215 in exponential form is:

13215 = 3¹ × 5¹ × 881¹

Step-2: Prime Factorization of 13220

Prime factors of 13220 are 2, 5, 661. Prime factorization of 13220 in exponential form is:

13220 = 2² × 5¹ × 661¹

Step-3: Factors of 13215

List of positive integer factors of 13215 that divides 13215 without a remainder.

1, 3, 5, 15, 881, 2643, 4405

Step-4: Factors of 13220

List of positive integer factors of 13220 that divides 13215 without a remainder.

1, 2, 4, 5, 10, 20, 661, 1322, 2644, 3305, 6610

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 13215 and 13220. The biggest common factor number is the GCF number.
So the greatest common factor 13215 and 13220 is 5.

Also check out the Least Common Multiple of 13215 and 13220