What is the Greatest Common Factor of 21997 and 22009?

Greatest common factor (GCF) of 21997 and 22009 is 1.

GCF(21997,22009) = 1

We will now calculate the prime factors of 21997 and 22009, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 21997 and 22009.

How to find the GCF of 21997 and 22009?

We will first find the prime factorization of 21997 and 22009. After we will calculate the factors of 21997 and 22009 and find the biggest common factor number .

Step-1: Prime Factorization of 21997

Prime factors of 21997 are 21997. Prime factorization of 21997 in exponential form is:

21997 = 21997¹

Step-2: Prime Factorization of 22009

Prime factors of 22009 are 13, 1693. Prime factorization of 22009 in exponential form is:

22009 = 13¹ × 1693¹

Step-3: Factors of 21997

List of positive integer factors of 21997 that divides 21997 without a remainder.

Step-4: Factors of 22009

List of positive integer factors of 22009 that divides 21997 without a remainder.

1, 13, 1693

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 21997 and 22009. The biggest common factor number is the GCF number.
So the greatest common factor 21997 and 22009 is 1.

Also check out the Least Common Multiple of 21997 and 22009