What is the Greatest Common Factor of 20491 and 20495?

Greatest common factor (GCF) of 20491 and 20495 is 1.

GCF(20491,20495) = 1

We will now calculate the prime factors of 20491 and 20495, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20491 and 20495.

How to find the GCF of 20491 and 20495?

We will first find the prime factorization of 20491 and 20495. After we will calculate the factors of 20491 and 20495 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 20495

Prime factors of 20495 are 5, 4099. Prime factorization of 20495 in exponential form is:

20495 = 5¹ × 4099¹

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 20495

List of positive integer factors of 20495 that divides 20491 without a remainder.

1, 5, 4099

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20491 and 20495. The biggest common factor number is the GCF number.
So the greatest common factor 20491 and 20495 is 1.

Also check out the Least Common Multiple of 20491 and 20495