What is the Greatest Common Factor of 39609 and 39618?

Greatest common factor (GCF) of 39609 and 39618 is 9.

GCF(39609,39618) = 9

We will now calculate the prime factors of 39609 and 39618, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 39609 and 39618.

How to find the GCF of 39609 and 39618?

We will first find the prime factorization of 39609 and 39618. After we will calculate the factors of 39609 and 39618 and find the biggest common factor number .

Step-1: Prime Factorization of 39609

Prime factors of 39609 are 3, 163. Prime factorization of 39609 in exponential form is:

39609 = 3⁵ × 163¹

Step-2: Prime Factorization of 39618

Prime factors of 39618 are 2, 3, 31, 71. Prime factorization of 39618 in exponential form is:

39618 = 2¹ × 3² × 31¹ × 71¹

Step-3: Factors of 39609

List of positive integer factors of 39609 that divides 39609 without a remainder.

1, 3, 9, 27, 81, 163, 243, 489, 1467, 4401, 13203

Step-4: Factors of 39618

List of positive integer factors of 39618 that divides 39609 without a remainder.

1, 2, 3, 6, 9, 18, 31, 62, 71, 93, 142, 186, 213, 279, 426, 558, 639, 1278, 2201, 4402, 6603, 13206, 19809

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 39609 and 39618. The biggest common factor number is the GCF number.
So the greatest common factor 39609 and 39618 is 9.

Also check out the Least Common Multiple of 39609 and 39618