What is the Greatest Common Factor of 18638 and 18644?

Greatest common factor (GCF) of 18638 and 18644 is 2.

GCF(18638,18644) = 2

We will now calculate the prime factors of 18638 and 18644, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 18638 and 18644.

How to find the GCF of 18638 and 18644?

We will first find the prime factorization of 18638 and 18644. After we will calculate the factors of 18638 and 18644 and find the biggest common factor number .

Step-1: Prime Factorization of 18638

Prime factors of 18638 are 2, 9319. Prime factorization of 18638 in exponential form is:

18638 = 2¹ × 9319¹

Step-2: Prime Factorization of 18644

Prime factors of 18644 are 2, 59, 79. Prime factorization of 18644 in exponential form is:

18644 = 2² × 59¹ × 79¹

Step-3: Factors of 18638

List of positive integer factors of 18638 that divides 18638 without a remainder.

1, 2, 9319

Step-4: Factors of 18644

List of positive integer factors of 18644 that divides 18638 without a remainder.

1, 2, 4, 59, 79, 118, 158, 236, 316, 4661, 9322

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 18638 and 18644. The biggest common factor number is the GCF number.
So the greatest common factor 18638 and 18644 is 2.

Also check out the Least Common Multiple of 18638 and 18644