What is the Greatest Common Factor of 20999 and 21017?

Greatest common factor (GCF) of 20999 and 21017 is 1.

GCF(20999,21017) = 1

We will now calculate the prime factors of 20999 and 21017, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20999 and 21017.

How to find the GCF of 20999 and 21017?

We will first find the prime factorization of 20999 and 21017. After we will calculate the factors of 20999 and 21017 and find the biggest common factor number .

Step-1: Prime Factorization of 20999

Prime factors of 20999 are 11, 23, 83. Prime factorization of 20999 in exponential form is:

20999 = 11¹ × 23¹ × 83¹

Step-2: Prime Factorization of 21017

Prime factors of 21017 are 21017. Prime factorization of 21017 in exponential form is:

21017 = 21017¹

Step-3: Factors of 20999

List of positive integer factors of 20999 that divides 20999 without a remainder.

1, 11, 23, 83, 253, 913, 1909

Step-4: Factors of 21017

List of positive integer factors of 21017 that divides 20999 without a remainder.

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20999 and 21017. The biggest common factor number is the GCF number.
So the greatest common factor 20999 and 21017 is 1.

Also check out the Least Common Multiple of 20999 and 21017