What is the Greatest Common Factor of 28721 and 28740?

Greatest common factor (GCF) of 28721 and 28740 is 1.

GCF(28721,28740) = 1

We will now calculate the prime factors of 28721 and 28740, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28721 and 28740.

How to find the GCF of 28721 and 28740?

We will first find the prime factorization of 28721 and 28740. After we will calculate the factors of 28721 and 28740 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 28740

Prime factors of 28740 are 2, 3, 5, 479. Prime factorization of 28740 in exponential form is:

28740 = 2² × 3¹ × 5¹ × 479¹

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 28740

List of positive integer factors of 28740 that divides 28721 without a remainder.

1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 479, 958, 1437, 1916, 2395, 2874, 4790, 5748, 7185, 9580, 14370

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 28721 and 28740. The biggest common factor number is the GCF number.
So the greatest common factor 28721 and 28740 is 1.

Also check out the Least Common Multiple of 28721 and 28740