What is the Greatest Common Factor of 28013 and 28021?

Greatest common factor (GCF) of 28013 and 28021 is 1.

GCF(28013,28021) = 1

We will now calculate the prime factors of 28013 and 28021, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28013 and 28021.

How to find the GCF of 28013 and 28021?

We will first find the prime factorization of 28013 and 28021. After we will calculate the factors of 28013 and 28021 and find the biggest common factor number .

Step-1: Prime Factorization of 28013

Prime factors of 28013 are 109, 257. Prime factorization of 28013 in exponential form is:

28013 = 109¹ × 257¹

Step-2: Prime Factorization of 28021

Prime factors of 28021 are 7, 4003. Prime factorization of 28021 in exponential form is:

28021 = 7¹ × 4003¹

Step-3: Factors of 28013

List of positive integer factors of 28013 that divides 28013 without a remainder.

1, 109, 257

Step-4: Factors of 28021

List of positive integer factors of 28021 that divides 28013 without a remainder.

1, 7, 4003

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 28013 and 28021. The biggest common factor number is the GCF number.
So the greatest common factor 28013 and 28021 is 1.

Also check out the Least Common Multiple of 28013 and 28021