What is the Greatest Common Factor of 7563 and 7581?

Greatest common factor (GCF) of 7563 and 7581 is 3.

GCF(7563,7581) = 3

We will now calculate the prime factors of 7563 and 7581, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 7563 and 7581.

How to find the GCF of 7563 and 7581?

We will first find the prime factorization of 7563 and 7581. After we will calculate the factors of 7563 and 7581 and find the biggest common factor number .

Step-1: Prime Factorization of 7563

Prime factors of 7563 are 3, 2521. Prime factorization of 7563 in exponential form is:

7563 = 3¹ × 2521¹

Step-2: Prime Factorization of 7581

Prime factors of 7581 are 3, 7, 19. Prime factorization of 7581 in exponential form is:

7581 = 3¹ × 7¹ × 19²

Step-3: Factors of 7563

List of positive integer factors of 7563 that divides 7563 without a remainder.

1, 3, 2521

Step-4: Factors of 7581

List of positive integer factors of 7581 that divides 7563 without a remainder.

1, 3, 7, 19, 21, 57, 133, 361, 399, 1083, 2527

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 7563 and 7581. The biggest common factor number is the GCF number.
So the greatest common factor 7563 and 7581 is 3.

Also check out the Least Common Multiple of 7563 and 7581