Greatest Common Factor of 660 and 1987
GCF(660, 1987) = 1, Greatest common factor of 660 and 1987 is 1. Greatest Common Factor or Greatest Common Divisor of two numbers is the largest integer by which both the numbers can be divided. There are two different methods to calculate Greatest Common Factor of 660 and 1987. Greatest Common Factor by prime factorization method and Greatest Common Factor by matching factors method.
Greatest Common Factor of 660 and 1987 by prime factorization method
We will first find the prime factorization of 660 and 1987.
Prime Factorization of 660 is 1, 2, 2, 3, 5, 11 and Prime Factorization of 1987 is 1, 1987.
- Factorize\( (660) = \) \(1\times 2\times 2\times 3\times 5\times 11\)
- Factorize\( (1987) = \) \(1\times 1987\)
Now we need to find any which are common for each number (1, 1) and multiply these numbers together.
\(GCF(660, 1987) = 1\times 1 = 1\).
Greatest Common Factor of 660 and 1987 by matching factors method
List of positive integers factors of 660 leaving a remainder zero is 1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 165, 220, 330, 660
List of positive integers factors of 1987 leaving a remainder zero is 1, 1987
As you can see, 1 is the greatest and common number that 660 and 1987 divides into.
So the greatest common factor 660 and 1987 is 1.
\(GCF(660, 1987) = 1\).
If you want to learn more about greatest common divisor, take a look at the Wikipedia page.
