Greatest Common Factor of 195 and 198

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 195, 198 i.e. 3 largest integer by which both the numbers can be divided.

Greatest common factor (GCF) of 195 and 198 is 3.

GCF(195,198) = 3

GCF of 195 and 198

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

GCF of:
and

Greatest Common Factor of 195 and 198

GCF of 195 and 198 is 3

Prime Factorization of 195


3 195
5 65
13 13
1

Prime factors of 195 are 3,5,13. Prime factorization of 195 in exponential form is:

195 = 31×51×131

Prime Factorization of 198


2 198
3 99
3 33
11 11
1

Prime factors of 198 are 2,3,11. Prime factorization of 198 in exponential form is:

198 = 21×32×111

∴ So by taking common prime factors GCF of 195 and 198 is 3

Greatest Common Factor of 195 and 198 by matching factors method

Factors of 195

List of positive integer factors of 195 that divides 195 without a remainder.

1,3,5,13,15,39,65,195

Factors of 198

List of positive integer factors of 198 that divides 198 without a remainder.

1,2,3,6,9,11,18,22,33,66,99,198

Greatest Common Factor

We found the factors and prime factorization of 195 and 198. The biggest common factor number is the GCF number.
So the greatest common factor 195 and 198 is 3.

Also check out the Least Common Multiple of 195 and 198

Properties of GCF 195 and 198

(i) The GCF of 195 and 198 is associative

GCF of 195 and 198 = GCF of 198 and 195

Related Greatest Common Factor of 195

Related Greatest Common Factor of 198

Frequently Asked Questions on GCF of 195 and 198

1. What is the GCF of 195 and 198?

Answer: GCF of 195 and 198 is 3.

2. What are the Factors of 195?

Answer: Factors of 195 are 1, 3, 5, 13, 15, 39, 65, 195. There are 8 integers that are factors of 195. The greatest factor of 195 is 195.

3. What are the Factors of 198?

Answer: Factors of 198 are 1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 99, 198. There are 12 integers that are factors of 198. The greatest factor of 198 is 198.

4. How to Find the GCF of 195 and 198?

Answer:

Greatest Common Factor of 195 and 198 = 3

Step 1: Find the prime factorization of 195

195 = 3 x 5 x 13

Step 2: Find the prime factorization of 198

198 = 2 x 3 x 3 x 11

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

GCF = 3

Step 4: Therefore, the greatest common factor of 195 and 198 is 3