Greatest Common Factor of 656 and 660

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

Make use of GCF Calculator to quickly find the Greatest Common Factor of numbers 656, 660 i.e. 4 largest integer by which both the numbers can be divided.

Greatest common factor (GCF) of 656 and 660 is 4.

GCF(656,660) = 4

GCF of 656 and 660

Greatest common factor or Greatest common divisor (GCD) can be calculated in following way;

GCF of:
and

Greatest Common Factor of 656 and 660

GCF of 656 and 660 is 4

Prime Factorization of 656


2 656
2 328
2 164
2 82
41 41
1

Prime factors of 656 are 2,41. Prime factorization of 656 in exponential form is:

656 = 24×411

Prime Factorization of 660


2 660
2 330
3 165
5 55
11 11
1

Prime factors of 660 are 2,3,5,11. Prime factorization of 660 in exponential form is:

660 = 22×31×51×111

∴ So by taking common prime factors GCF of 656 and 660 is 4

Greatest Common Factor of 656 and 660 by matching factors method

Factors of 656

List of positive integer factors of 656 that divides 656 without a remainder.

1,2,4,8,16,41,82,164,328,656

Factors of 660

List of positive integer factors of 660 that divides 660 without a remainder.

1,2,3,4,5,6,10,11,12,15,20,22,30,33,44,55,60,66,110,132,165,220,330,660

Greatest Common Factor

We found the factors and prime factorization of 656 and 660. The biggest common factor number is the GCF number.
So the greatest common factor 656 and 660 is 4.

Also check out the Least Common Multiple of 656 and 660

Properties of GCF 656 and 660

(i) The GCF of 656 and 660 is associative

GCF of 656 and 660 = GCF of 660 and 656

Related Greatest Common Factor of 656

Related Greatest Common Factor of 660

Frequently Asked Questions on GCF of 656 and 660

1. What is the GCF of 656 and 660?

Answer: GCF of 656 and 660 is 4.

2. What are the Factors of 656?

Answer: Factors of 656 are 1, 2, 4, 8, 16, 41, 82, 164, 328, 656. There are 10 integers that are factors of 656. The greatest factor of 656 is 656.

3. What are the Factors of 660?

Answer: Factors of 660 are 1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 165, 220, 330, 660. There are 24 integers that are factors of 660. The greatest factor of 660 is 660.

4. How to Find the GCF of 656 and 660?

Answer:

Greatest Common Factor of 656 and 660 = 4

Step 1: Find the prime factorization of 656

656 = 2 x 2 x 2 x 2 x 41

Step 2: Find the prime factorization of 660

660 = 2 x 2 x 3 x 5 x 11

Step 3: Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf:

GCF = 2 x 2 = 4

Step 4: Therefore, the greatest common factor of 656 and 660 is 4