What is the Greatest Common Factor of 21124 and 21136?

Greatest common factor (GCF) of 21124 and 21136 is 4.

GCF(21124,21136) = 4

We will now calculate the prime factors of 21124 and 21136, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 21124 and 21136.

How to find the GCF of 21124 and 21136?

We will first find the prime factorization of 21124 and 21136. After we will calculate the factors of 21124 and 21136 and find the biggest common factor number .

Step-1: Prime Factorization of 21124

Prime factors of 21124 are 2, 5281. Prime factorization of 21124 in exponential form is:

21124 = 2² × 5281¹

Step-2: Prime Factorization of 21136

Prime factors of 21136 are 2, 1321. Prime factorization of 21136 in exponential form is:

21136 = 2⁴ × 1321¹

Step-3: Factors of 21124

List of positive integer factors of 21124 that divides 21124 without a remainder.

1, 2, 4, 5281, 10562

Step-4: Factors of 21136

List of positive integer factors of 21136 that divides 21124 without a remainder.

1, 2, 4, 8, 16, 1321, 2642, 5284, 10568

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 21124 and 21136. The biggest common factor number is the GCF number.
So the greatest common factor 21124 and 21136 is 4.

Also check out the Least Common Multiple of 21124 and 21136