What is the Greatest Common Factor of 28391 and 28400?

Greatest common factor (GCF) of 28391 and 28400 is 1.

GCF(28391,28400) = 1

We will now calculate the prime factors of 28391 and 28400, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28391 and 28400.

How to find the GCF of 28391 and 28400?

We will first find the prime factorization of 28391 and 28400. After we will calculate the factors of 28391 and 28400 and find the biggest common factor number .

Step-1: Prime Factorization of 28391

Prime factors of 28391 are 11, 29, 89. Prime factorization of 28391 in exponential form is:

28391 = 11¹ × 29¹ × 89¹

Step-2: Prime Factorization of 28400

Prime factors of 28400 are 2, 5, 71. Prime factorization of 28400 in exponential form is:

28400 = 2⁴ × 5² × 71¹

Step-3: Factors of 28391

List of positive integer factors of 28391 that divides 28391 without a remainder.

1, 11, 29, 89, 319, 979, 2581

Step-4: Factors of 28400

List of positive integer factors of 28400 that divides 28391 without a remainder.

1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 71, 80, 100, 142, 200, 284, 355, 400, 568, 710, 1136, 1420, 1775, 2840, 3550, 5680, 7100, 14200

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 28391 and 28400. The biggest common factor number is the GCF number.
So the greatest common factor 28391 and 28400 is 1.

Also check out the Least Common Multiple of 28391 and 28400