What is the Greatest Common Factor of 21291 and 21304?

Greatest common factor (GCF) of 21291 and 21304 is 1.

GCF(21291,21304) = 1

We will now calculate the prime factors of 21291 and 21304, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 21291 and 21304.

How to find the GCF of 21291 and 21304?

We will first find the prime factorization of 21291 and 21304. After we will calculate the factors of 21291 and 21304 and find the biggest common factor number .

Step-1: Prime Factorization of 21291

Prime factors of 21291 are 3, 47, 151. Prime factorization of 21291 in exponential form is:

21291 = 3¹ × 47¹ × 151¹

Step-2: Prime Factorization of 21304

Prime factors of 21304 are 2, 2663. Prime factorization of 21304 in exponential form is:

21304 = 2³ × 2663¹

Step-3: Factors of 21291

List of positive integer factors of 21291 that divides 21291 without a remainder.

1, 3, 47, 141, 151, 453, 7097

Step-4: Factors of 21304

List of positive integer factors of 21304 that divides 21291 without a remainder.

1, 2, 4, 8, 2663, 5326, 10652

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 21291 and 21304. The biggest common factor number is the GCF number.
So the greatest common factor 21291 and 21304 is 1.

Also check out the Least Common Multiple of 21291 and 21304