What is the Greatest Common Factor of 18421 and 18439?

Greatest common factor (GCF) of 18421 and 18439 is 1.

GCF(18421,18439) = 1

We will now calculate the prime factors of 18421 and 18439, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 18421 and 18439.

How to find the GCF of 18421 and 18439?

We will first find the prime factorization of 18421 and 18439. After we will calculate the factors of 18421 and 18439 and find the biggest common factor number .

Step-1: Prime Factorization of 18421

Prime factors of 18421 are 13, 109. Prime factorization of 18421 in exponential form is:

18421 = 13² × 109¹

Step-2: Prime Factorization of 18439

Prime factors of 18439 are 18439. Prime factorization of 18439 in exponential form is:

18439 = 18439¹

Step-3: Factors of 18421

List of positive integer factors of 18421 that divides 18421 without a remainder.

1, 13, 109, 169, 1417

Step-4: Factors of 18439

List of positive integer factors of 18439 that divides 18421 without a remainder.

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 18421 and 18439. The biggest common factor number is the GCF number.
So the greatest common factor 18421 and 18439 is 1.

Also check out the Least Common Multiple of 18421 and 18439