What is the Greatest Common Factor of 10509 and 10521?

Greatest common factor (GCF) of 10509 and 10521 is 3.

GCF(10509,10521) = 3

We will now calculate the prime factors of 10509 and 10521, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 10509 and 10521.

How to find the GCF of 10509 and 10521?

We will first find the prime factorization of 10509 and 10521. After we will calculate the factors of 10509 and 10521 and find the biggest common factor number .

Step-1: Prime Factorization of 10509

Prime factors of 10509 are 3, 31, 113. Prime factorization of 10509 in exponential form is:

10509 = 3¹ × 31¹ × 113¹

Step-2: Prime Factorization of 10521

Prime factors of 10521 are 3, 7, 167. Prime factorization of 10521 in exponential form is:

10521 = 3² × 7¹ × 167¹

Step-3: Factors of 10509

List of positive integer factors of 10509 that divides 10509 without a remainder.

1, 3, 31, 93, 113, 339, 3503

Step-4: Factors of 10521

List of positive integer factors of 10521 that divides 10509 without a remainder.

1, 3, 7, 9, 21, 63, 167, 501, 1169, 1503, 3507

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 10509 and 10521. The biggest common factor number is the GCF number.
So the greatest common factor 10509 and 10521 is 3.

Also check out the Least Common Multiple of 10509 and 10521