What is the Greatest Common Factor of 28917 and 28921?

Greatest common factor (GCF) of 28917 and 28921 is 1.

GCF(28917,28921) = 1

We will now calculate the prime factors of 28917 and 28921, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28917 and 28921.

How to find the GCF of 28917 and 28921?

We will first find the prime factorization of 28917 and 28921. After we will calculate the factors of 28917 and 28921 and find the biggest common factor number .

Step-1: Prime Factorization of 28917

Prime factors of 28917 are 3, 7, 17. Prime factorization of 28917 in exponential form is:

28917 = 3⁵ × 7¹ × 17¹

Step-2: Prime Factorization of 28921

Prime factors of 28921 are 28921. Prime factorization of 28921 in exponential form is:

28921 = 28921¹

Step-3: Factors of 28917

List of positive integer factors of 28917 that divides 28917 without a remainder.

1, 3, 7, 9, 17, 21, 27, 51, 63, 81, 119, 153, 189, 243, 357, 459, 567, 1071, 1377, 1701, 3213, 4131, 9639

Step-4: Factors of 28921

List of positive integer factors of 28921 that divides 28917 without a remainder.

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 28917 and 28921. The biggest common factor number is the GCF number.
So the greatest common factor 28917 and 28921 is 1.

Also check out the Least Common Multiple of 28917 and 28921