What is the Greatest Common Factor of 20491 and 20508?

Greatest common factor (GCF) of 20491 and 20508 is 1.

GCF(20491,20508) = 1

We will now calculate the prime factors of 20491 and 20508, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20491 and 20508.

How to find the GCF of 20491 and 20508?

We will first find the prime factorization of 20491 and 20508. After we will calculate the factors of 20491 and 20508 and find the biggest common factor number .

Step-1: Prime Factorization of 20491

Prime factors of 20491 are 31, 661. Prime factorization of 20491 in exponential form is:

20491 = 31¹ × 661¹

Step-2: Prime Factorization of 20508

Prime factors of 20508 are 2, 3, 1709. Prime factorization of 20508 in exponential form is:

20508 = 2² × 3¹ × 1709¹

Step-3: Factors of 20491

List of positive integer factors of 20491 that divides 20491 without a remainder.

1, 31, 661

Step-4: Factors of 20508

List of positive integer factors of 20508 that divides 20491 without a remainder.

1, 2, 3, 4, 6, 12, 1709, 3418, 5127, 6836, 10254

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20491 and 20508. The biggest common factor number is the GCF number.
So the greatest common factor 20491 and 20508 is 1.

Also check out the Least Common Multiple of 20491 and 20508