What is the Greatest Common Factor of 28347 and 28356?

Greatest common factor (GCF) of 28347 and 28356 is 3.

GCF(28347,28356) = 3

We will now calculate the prime factors of 28347 and 28356, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28347 and 28356.

How to find the GCF of 28347 and 28356?

We will first find the prime factorization of 28347 and 28356. After we will calculate the factors of 28347 and 28356 and find the biggest common factor number .

Step-1: Prime Factorization of 28347

Prime factors of 28347 are 3, 11, 859. Prime factorization of 28347 in exponential form is:

28347 = 3¹ × 11¹ × 859¹

Step-2: Prime Factorization of 28356

Prime factors of 28356 are 2, 3, 17, 139. Prime factorization of 28356 in exponential form is:

28356 = 2² × 3¹ × 17¹ × 139¹

Step-3: Factors of 28347

List of positive integer factors of 28347 that divides 28347 without a remainder.

1, 3, 11, 33, 859, 2577, 9449

Step-4: Factors of 28356

List of positive integer factors of 28356 that divides 28347 without a remainder.

1, 2, 3, 4, 6, 12, 17, 34, 51, 68, 102, 139, 204, 278, 417, 556, 834, 1668, 2363, 4726, 7089, 9452, 14178

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 28347 and 28356. The biggest common factor number is the GCF number.
So the greatest common factor 28347 and 28356 is 3.

Also check out the Least Common Multiple of 28347 and 28356