What is the Greatest Common Factor of 18645 and 18660?

Greatest common factor (GCF) of 18645 and 18660 is 15.

GCF(18645,18660) = 15

We will now calculate the prime factors of 18645 and 18660, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 18645 and 18660.

How to find the GCF of 18645 and 18660?

We will first find the prime factorization of 18645 and 18660. After we will calculate the factors of 18645 and 18660 and find the biggest common factor number .

Step-1: Prime Factorization of 18645

Prime factors of 18645 are 3, 5, 11, 113. Prime factorization of 18645 in exponential form is:

18645 = 3¹ × 5¹ × 11¹ × 113¹

Step-2: Prime Factorization of 18660

Prime factors of 18660 are 2, 3, 5, 311. Prime factorization of 18660 in exponential form is:

18660 = 2² × 3¹ × 5¹ × 311¹

Step-3: Factors of 18645

List of positive integer factors of 18645 that divides 18645 without a remainder.

1, 3, 5, 11, 15, 33, 55, 113, 165, 339, 565, 1243, 1695, 3729, 6215

Step-4: Factors of 18660

List of positive integer factors of 18660 that divides 18645 without a remainder.

1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 311, 622, 933, 1244, 1555, 1866, 3110, 3732, 4665, 6220, 9330

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 18645 and 18660. The biggest common factor number is the GCF number.
So the greatest common factor 18645 and 18660 is 15.

Also check out the Least Common Multiple of 18645 and 18660