What is the Greatest Common Factor of 86780 and 86785?

Greatest common factor (GCF) of 86780 and 86785 is 5.

GCF(86780,86785) = 5

We will now calculate the prime factors of 86780 and 86785, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 86780 and 86785.

How to find the GCF of 86780 and 86785?

We will first find the prime factorization of 86780 and 86785. After we will calculate the factors of 86780 and 86785 and find the biggest common factor number .

Step-1: Prime Factorization of 86780

Prime factors of 86780 are 2, 5, 4339. Prime factorization of 86780 in exponential form is:

86780 = 2² × 5¹ × 4339¹

Step-2: Prime Factorization of 86785

Prime factors of 86785 are 5, 17, 1021. Prime factorization of 86785 in exponential form is:

86785 = 5¹ × 17¹ × 1021¹

Step-3: Factors of 86780

List of positive integer factors of 86780 that divides 86780 without a remainder.

1, 2, 4, 5, 10, 20, 4339, 8678, 17356, 21695, 43390

Step-4: Factors of 86785

List of positive integer factors of 86785 that divides 86780 without a remainder.

1, 5, 17, 85, 1021, 5105, 17357

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 86780 and 86785. The biggest common factor number is the GCF number.
So the greatest common factor 86780 and 86785 is 5.

Also check out the Least Common Multiple of 86780 and 86785