What is the Greatest Common Factor of 28855 and 28870?

Greatest common factor (GCF) of 28855 and 28870 is 5.

GCF(28855,28870) = 5

We will now calculate the prime factors of 28855 and 28870, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28855 and 28870.

How to find the GCF of 28855 and 28870?

We will first find the prime factorization of 28855 and 28870. After we will calculate the factors of 28855 and 28870 and find the biggest common factor number .

Step-1: Prime Factorization of 28855

Prime factors of 28855 are 5, 29, 199. Prime factorization of 28855 in exponential form is:

28855 = 5¹ × 29¹ × 199¹

Step-2: Prime Factorization of 28870

Prime factors of 28870 are 2, 5, 2887. Prime factorization of 28870 in exponential form is:

28870 = 2¹ × 5¹ × 2887¹

Step-3: Factors of 28855

List of positive integer factors of 28855 that divides 28855 without a remainder.

1, 5, 29, 145, 199, 995, 5771

Step-4: Factors of 28870

List of positive integer factors of 28870 that divides 28855 without a remainder.

1, 2, 5, 10, 2887, 5774, 14435

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 28855 and 28870. The biggest common factor number is the GCF number.
So the greatest common factor 28855 and 28870 is 5.

Also check out the Least Common Multiple of 28855 and 28870