What is the Greatest Common Factor of 64563 and 64581?

Greatest common factor (GCF) of 64563 and 64581 is 3.

GCF(64563,64581) = 3

We will now calculate the prime factors of 64563 and 64581, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 64563 and 64581.

How to find the GCF of 64563 and 64581?

We will first find the prime factorization of 64563 and 64581. After we will calculate the factors of 64563 and 64581 and find the biggest common factor number .

Step-1: Prime Factorization of 64563

Prime factors of 64563 are 3, 21521. Prime factorization of 64563 in exponential form is:

64563 = 3¹ × 21521¹

Step-2: Prime Factorization of 64581

Prime factors of 64581 are 3, 11, 19, 103. Prime factorization of 64581 in exponential form is:

64581 = 3¹ × 11¹ × 19¹ × 103¹

Step-3: Factors of 64563

List of positive integer factors of 64563 that divides 64563 without a remainder.

1, 3, 21521

Step-4: Factors of 64581

List of positive integer factors of 64581 that divides 64563 without a remainder.

1, 3, 11, 19, 33, 57, 103, 209, 309, 627, 1133, 1957, 3399, 5871, 21527

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 64563 and 64581. The biggest common factor number is the GCF number.
So the greatest common factor 64563 and 64581 is 3.

Also check out the Least Common Multiple of 64563 and 64581