What is the Greatest Common Factor of 64215 and 64221?

Greatest common factor (GCF) of 64215 and 64221 is 3.

GCF(64215,64221) = 3

We will now calculate the prime factors of 64215 and 64221, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 64215 and 64221.

How to find the GCF of 64215 and 64221?

We will first find the prime factorization of 64215 and 64221. After we will calculate the factors of 64215 and 64221 and find the biggest common factor number .

Step-1: Prime Factorization of 64215

Prime factors of 64215 are 3, 5, 1427. Prime factorization of 64215 in exponential form is:

64215 = 3² × 5¹ × 1427¹

Step-2: Prime Factorization of 64221

Prime factors of 64221 are 3, 21407. Prime factorization of 64221 in exponential form is:

64221 = 3¹ × 21407¹

Step-3: Factors of 64215

List of positive integer factors of 64215 that divides 64215 without a remainder.

1, 3, 5, 9, 15, 45, 1427, 4281, 7135, 12843, 21405

Step-4: Factors of 64221

List of positive integer factors of 64221 that divides 64215 without a remainder.

1, 3, 21407

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 64215 and 64221. The biggest common factor number is the GCF number.
So the greatest common factor 64215 and 64221 is 3.

Also check out the Least Common Multiple of 64215 and 64221