What is the Greatest Common Factor of 28721 and 28729?

Greatest common factor (GCF) of 28721 and 28729 is 1.

GCF(28721,28729) = 1

We will now calculate the prime factors of 28721 and 28729, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28721 and 28729.

How to find the GCF of 28721 and 28729?

We will first find the prime factorization of 28721 and 28729. After we will calculate the factors of 28721 and 28729 and find the biggest common factor number .

Step-1: Prime Factorization of 28721

Prime factors of 28721 are 7, 11, 373. Prime factorization of 28721 in exponential form is:

28721 = 7¹ × 11¹ × 373¹

Step-2: Prime Factorization of 28729

Prime factors of 28729 are 28729. Prime factorization of 28729 in exponential form is:

28729 = 28729¹

Step-3: Factors of 28721

List of positive integer factors of 28721 that divides 28721 without a remainder.

1, 7, 11, 77, 373, 2611, 4103

Step-4: Factors of 28729

List of positive integer factors of 28729 that divides 28721 without a remainder.

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 28721 and 28729. The biggest common factor number is the GCF number.
So the greatest common factor 28721 and 28729 is 1.

Also check out the Least Common Multiple of 28721 and 28729