What is the Greatest Common Factor of 66645 and 66660?

Greatest common factor (GCF) of 66645 and 66660 is 15.

GCF(66645,66660) = 15

We will now calculate the prime factors of 66645 and 66660, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 66645 and 66660.

How to find the GCF of 66645 and 66660?

We will first find the prime factorization of 66645 and 66660. After we will calculate the factors of 66645 and 66660 and find the biggest common factor number .

Step-1: Prime Factorization of 66645

Prime factors of 66645 are 3, 5, 1481. Prime factorization of 66645 in exponential form is:

66645 = 3² × 5¹ × 1481¹

Step-2: Prime Factorization of 66660

Prime factors of 66660 are 2, 3, 5, 11, 101. Prime factorization of 66660 in exponential form is:

66660 = 2² × 3¹ × 5¹ × 11¹ × 101¹

Step-3: Factors of 66645

List of positive integer factors of 66645 that divides 66645 without a remainder.

1, 3, 5, 9, 15, 45, 1481, 4443, 7405, 13329, 22215

Step-4: Factors of 66660

List of positive integer factors of 66660 that divides 66645 without a remainder.

1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 101, 110, 132, 165, 202, 220, 303, 330, 404, 505, 606, 660, 1010, 1111, 1212, 1515, 2020, 2222, 3030, 3333, 4444, 5555, 6060, 6666, 11110, 13332, 16665, 22220, 33330

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 66645 and 66660. The biggest common factor number is the GCF number.
So the greatest common factor 66645 and 66660 is 15.

Also check out the Least Common Multiple of 66645 and 66660