What is the Greatest Common Factor of 86421 and 86439?

Greatest common factor (GCF) of 86421 and 86439 is 3.

GCF(86421,86439) = 3

We will now calculate the prime factors of 86421 and 86439, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 86421 and 86439.

How to find the GCF of 86421 and 86439?

We will first find the prime factorization of 86421 and 86439. After we will calculate the factors of 86421 and 86439 and find the biggest common factor number .

Step-1: Prime Factorization of 86421

Prime factors of 86421 are 3, 28807. Prime factorization of 86421 in exponential form is:

86421 = 3¹ × 28807¹

Step-2: Prime Factorization of 86439

Prime factors of 86439 are 3, 28813. Prime factorization of 86439 in exponential form is:

86439 = 3¹ × 28813¹

Step-3: Factors of 86421

List of positive integer factors of 86421 that divides 86421 without a remainder.

1, 3, 28807

Step-4: Factors of 86439

List of positive integer factors of 86439 that divides 86421 without a remainder.

1, 3, 28813

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 86421 and 86439. The biggest common factor number is the GCF number.
So the greatest common factor 86421 and 86439 is 3.

Also check out the Least Common Multiple of 86421 and 86439