What is the Greatest Common Factor of 21581 and 21587?

Greatest common factor (GCF) of 21581 and 21587 is 1.

GCF(21581,21587) = 1

We will now calculate the prime factors of 21581 and 21587, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 21581 and 21587.

How to find the GCF of 21581 and 21587?

We will first find the prime factorization of 21581 and 21587. After we will calculate the factors of 21581 and 21587 and find the biggest common factor number .

Step-1: Prime Factorization of 21581

Prime factors of 21581 are 7, 3083. Prime factorization of 21581 in exponential form is:

21581 = 7¹ × 3083¹

Step-2: Prime Factorization of 21587

Prime factors of 21587 are 21587. Prime factorization of 21587 in exponential form is:

21587 = 21587¹

Step-3: Factors of 21581

List of positive integer factors of 21581 that divides 21581 without a remainder.

1, 7, 3083

Step-4: Factors of 21587

List of positive integer factors of 21587 that divides 21581 without a remainder.

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 21581 and 21587. The biggest common factor number is the GCF number.
So the greatest common factor 21581 and 21587 is 1.

Also check out the Least Common Multiple of 21581 and 21587