What is the Greatest Common Factor of 66540 and 66555?

Greatest common factor (GCF) of 66540 and 66555 is 15.

GCF(66540,66555) = 15

We will now calculate the prime factors of 66540 and 66555, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 66540 and 66555.

How to find the GCF of 66540 and 66555?

We will first find the prime factorization of 66540 and 66555. After we will calculate the factors of 66540 and 66555 and find the biggest common factor number .

Step-1: Prime Factorization of 66540

Prime factors of 66540 are 2, 3, 5, 1109. Prime factorization of 66540 in exponential form is:

66540 = 2² × 3¹ × 5¹ × 1109¹

Step-2: Prime Factorization of 66555

Prime factors of 66555 are 3, 5, 17, 29. Prime factorization of 66555 in exponential form is:

66555 = 3³ × 5¹ × 17¹ × 29¹

Step-3: Factors of 66540

List of positive integer factors of 66540 that divides 66540 without a remainder.

1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 1109, 2218, 3327, 4436, 5545, 6654, 11090, 13308, 16635, 22180, 33270

Step-4: Factors of 66555

List of positive integer factors of 66555 that divides 66540 without a remainder.

1, 3, 5, 9, 15, 17, 27, 29, 45, 51, 85, 87, 135, 145, 153, 255, 261, 435, 459, 493, 765, 783, 1305, 1479, 2295, 2465, 3915, 4437, 7395, 13311, 22185

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 66540 and 66555. The biggest common factor number is the GCF number.
So the greatest common factor 66540 and 66555 is 15.

Also check out the Least Common Multiple of 66540 and 66555