What is the Greatest Common Factor of 18421 and 18430?

Greatest common factor (GCF) of 18421 and 18430 is 1.

GCF(18421,18430) = 1

We will now calculate the prime factors of 18421 and 18430, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 18421 and 18430.

How to find the GCF of 18421 and 18430?

We will first find the prime factorization of 18421 and 18430. After we will calculate the factors of 18421 and 18430 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 18430

Prime factors of 18430 are 2, 5, 19, 97. Prime factorization of 18430 in exponential form is:

18430 = 2¹ × 5¹ × 19¹ × 97¹

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 18430

List of positive integer factors of 18430 that divides 18421 without a remainder.

1, 2, 5, 10, 19, 38, 95, 97, 190, 194, 485, 970, 1843, 3686, 9215

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 18421 and 18430. The biggest common factor number is the GCF number.
So the greatest common factor 18421 and 18430 is 1.

Also check out the Least Common Multiple of 18421 and 18430