What is the Greatest Common Factor of 28321 and 28329?

Greatest common factor (GCF) of 28321 and 28329 is 1.

GCF(28321,28329) = 1

We will now calculate the prime factors of 28321 and 28329, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28321 and 28329.

How to find the GCF of 28321 and 28329?

We will first find the prime factorization of 28321 and 28329. After we will calculate the factors of 28321 and 28329 and find the biggest common factor number .

Step-1: Prime Factorization of 28321

Prime factors of 28321 are 127, 223. Prime factorization of 28321 in exponential form is:

28321 = 127¹ × 223¹

Step-2: Prime Factorization of 28329

Prime factors of 28329 are 3, 7, 19, 71. Prime factorization of 28329 in exponential form is:

28329 = 3¹ × 7¹ × 19¹ × 71¹

Step-3: Factors of 28321

List of positive integer factors of 28321 that divides 28321 without a remainder.

1, 127, 223

Step-4: Factors of 28329

List of positive integer factors of 28329 that divides 28321 without a remainder.

1, 3, 7, 19, 21, 57, 71, 133, 213, 399, 497, 1349, 1491, 4047, 9443

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 28321 and 28329. The biggest common factor number is the GCF number.
So the greatest common factor 28321 and 28329 is 1.

Also check out the Least Common Multiple of 28321 and 28329