What is the Greatest Common Factor of 20535 and 20553?

Greatest common factor (GCF) of 20535 and 20553 is 3.

GCF(20535,20553) = 3

We will now calculate the prime factors of 20535 and 20553, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20535 and 20553.

How to find the GCF of 20535 and 20553?

We will first find the prime factorization of 20535 and 20553. After we will calculate the factors of 20535 and 20553 and find the biggest common factor number .

Step-1: Prime Factorization of 20535

Prime factors of 20535 are 3, 5, 37. Prime factorization of 20535 in exponential form is:

20535 = 3¹ × 5¹ × 37²

Step-2: Prime Factorization of 20553

Prime factors of 20553 are 3, 13, 17, 31. Prime factorization of 20553 in exponential form is:

20553 = 3¹ × 13¹ × 17¹ × 31¹

Step-3: Factors of 20535

List of positive integer factors of 20535 that divides 20535 without a remainder.

1, 3, 5, 15, 37, 111, 185, 555, 1369, 4107, 6845

Step-4: Factors of 20553

List of positive integer factors of 20553 that divides 20535 without a remainder.

1, 3, 13, 17, 31, 39, 51, 93, 221, 403, 527, 663, 1209, 1581, 6851

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20535 and 20553. The biggest common factor number is the GCF number.
So the greatest common factor 20535 and 20553 is 3.

Also check out the Least Common Multiple of 20535 and 20553