What is the Greatest Common Factor of 28975 and 28985?

Greatest common factor (GCF) of 28975 and 28985 is 5.

GCF(28975,28985) = 5

We will now calculate the prime factors of 28975 and 28985, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 28975 and 28985.

How to find the GCF of 28975 and 28985?

We will first find the prime factorization of 28975 and 28985. After we will calculate the factors of 28975 and 28985 and find the biggest common factor number .

Step-1: Prime Factorization of 28975

Prime factors of 28975 are 5, 19, 61. Prime factorization of 28975 in exponential form is:

28975 = 5² × 19¹ × 61¹

Step-2: Prime Factorization of 28985

Prime factors of 28985 are 5, 11, 17, 31. Prime factorization of 28985 in exponential form is:

28985 = 5¹ × 11¹ × 17¹ × 31¹

Step-3: Factors of 28975

List of positive integer factors of 28975 that divides 28975 without a remainder.

1, 5, 19, 25, 61, 95, 305, 475, 1159, 1525, 5795

Step-4: Factors of 28985

List of positive integer factors of 28985 that divides 28975 without a remainder.

1, 5, 11, 17, 31, 55, 85, 155, 187, 341, 527, 935, 1705, 2635, 5797

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 28975 and 28985. The biggest common factor number is the GCF number.
So the greatest common factor 28975 and 28985 is 5.

Also check out the Least Common Multiple of 28975 and 28985