What is the Greatest Common Factor of 86975 and 86985?

Greatest common factor (GCF) of 86975 and 86985 is 5.

GCF(86975,86985) = 5

We will now calculate the prime factors of 86975 and 86985, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 86975 and 86985.

How to find the GCF of 86975 and 86985?

We will first find the prime factorization of 86975 and 86985. After we will calculate the factors of 86975 and 86985 and find the biggest common factor number .

Step-1: Prime Factorization of 86975

Prime factors of 86975 are 5, 7, 71. Prime factorization of 86975 in exponential form is:

86975 = 5² × 7² × 71¹

Step-2: Prime Factorization of 86985

Prime factors of 86985 are 3, 5, 1933. Prime factorization of 86985 in exponential form is:

86985 = 3² × 5¹ × 1933¹

Step-3: Factors of 86975

List of positive integer factors of 86975 that divides 86975 without a remainder.

1, 5, 7, 25, 35, 49, 71, 175, 245, 355, 497, 1225, 1775, 2485, 3479, 12425, 17395

Step-4: Factors of 86985

List of positive integer factors of 86985 that divides 86975 without a remainder.

1, 3, 5, 9, 15, 45, 1933, 5799, 9665, 17397, 28995

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 86975 and 86985. The biggest common factor number is the GCF number.
So the greatest common factor 86975 and 86985 is 5.

Also check out the Least Common Multiple of 86975 and 86985