What is the Greatest Common Factor of 21328 and 21347?

Greatest common factor (GCF) of 21328 and 21347 is 1.

GCF(21328,21347) = 1

We will now calculate the prime factors of 21328 and 21347, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 21328 and 21347.

How to find the GCF of 21328 and 21347?

We will first find the prime factorization of 21328 and 21347. After we will calculate the factors of 21328 and 21347 and find the biggest common factor number .

Step-1: Prime Factorization of 21328

Prime factors of 21328 are 2, 31, 43. Prime factorization of 21328 in exponential form is:

21328 = 2⁴ × 31¹ × 43¹

Step-2: Prime Factorization of 21347

Prime factors of 21347 are 21347. Prime factorization of 21347 in exponential form is:

21347 = 21347¹

Step-3: Factors of 21328

List of positive integer factors of 21328 that divides 21328 without a remainder.

1, 2, 4, 8, 16, 31, 43, 62, 86, 124, 172, 248, 344, 496, 688, 1333, 2666, 5332, 10664

Step-4: Factors of 21347

List of positive integer factors of 21347 that divides 21328 without a remainder.

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 21328 and 21347. The biggest common factor number is the GCF number.
So the greatest common factor 21328 and 21347 is 1.

Also check out the Least Common Multiple of 21328 and 21347