What is the Greatest Common Factor of 18618 and 18638?

Greatest common factor (GCF) of 18618 and 18638 is 2.

GCF(18618,18638) = 2

We will now calculate the prime factors of 18618 and 18638, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 18618 and 18638.

How to find the GCF of 18618 and 18638?

We will first find the prime factorization of 18618 and 18638. After we will calculate the factors of 18618 and 18638 and find the biggest common factor number .

Step-1: Prime Factorization of 18618

Prime factors of 18618 are 2, 3, 29, 107. Prime factorization of 18618 in exponential form is:

18618 = 2¹ × 3¹ × 29¹ × 107¹

Step-2: Prime Factorization of 18638

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

18638 = 2¹ × 9319¹

Step-3: Factors of 18618

List of positive integer factors of 18618 that divides 18618 without a remainder.

1, 2, 3, 6, 29, 58, 87, 107, 174, 214, 321, 642, 3103, 6206, 9309

Step-4: Factors of 18638

List of positive integer factors of 18638 that divides 18618 without a remainder.

1, 2, 9319

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 18618 and 18638. The biggest common factor number is the GCF number.
So the greatest common factor 18618 and 18638 is 2.

Also check out the Least Common Multiple of 18618 and 18638