What is the Greatest Common Factor of 20091 and 20105?

Greatest common factor (GCF) of 20091 and 20105 is 1.

GCF(20091,20105) = 1

We will now calculate the prime factors of 20091 and 20105, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20091 and 20105.

How to find the GCF of 20091 and 20105?

We will first find the prime factorization of 20091 and 20105. After we will calculate the factors of 20091 and 20105 and find the biggest common factor number .

Step-1: Prime Factorization of 20091

Prime factors of 20091 are 3, 37, 181. Prime factorization of 20091 in exponential form is:

20091 = 3¹ × 37¹ × 181¹

Step-2: Prime Factorization of 20105

Prime factors of 20105 are 5, 4021. Prime factorization of 20105 in exponential form is:

20105 = 5¹ × 4021¹

Step-3: Factors of 20091

List of positive integer factors of 20091 that divides 20091 without a remainder.

1, 3, 37, 111, 181, 543, 6697

Step-4: Factors of 20105

List of positive integer factors of 20105 that divides 20091 without a remainder.

1, 5, 4021

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20091 and 20105. The biggest common factor number is the GCF number.
So the greatest common factor 20091 and 20105 is 1.

Also check out the Least Common Multiple of 20091 and 20105