GCD of 79, 78, 87, 18 Calculator

Given Input numbers are 79, 78, 87, 18

To find the GCD of numbers using factoring list out all the divisors of each number

Divisors of 79

List of positive integer divisors of 79 that divides 79 without a remainder.

1, 79

Divisors of 78

List of positive integer divisors of 78 that divides 78 without a remainder.

1, 2, 3, 6, 13, 26, 39, 78

Divisors of 87

List of positive integer divisors of 87 that divides 87 without a remainder.

1, 3, 29, 87

Divisors of 18

List of positive integer divisors of 18 that divides 18 without a remainder.

1, 2, 3, 6, 9, 18

Greatest Common Divisior

We found the divisors of 79, 78, 87, 18 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 79, 78, 87, 18 is 1.

Therefore, GCD of numbers 79, 78, 87, 18 is 1

Given Input Data is 79, 78, 87, 18

Make a list of Prime Factors of all the given numbers initially

Prime Factorization of 79 is 79

Prime Factorization of 78 is 2 x 3 x 13

Prime Factorization of 87 is 3 x 29

Prime Factorization of 18 is 2 x 3 x 3

The above numbers do not have any common prime factor. So GCD is 1

Step1:

Let's calculate the GCD of first two numbers

The formula of GCD is GCD(a, b) = ( a x b) / LCM(a, b)

LCM(79, 78) = 6162

GCD(79, 78) = ( 79 x 78 ) / 6162

GCD(79, 78) = 6162 / 6162

GCD(79, 78) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 87

The formula of GCD is GCD(a, b) = ( a x b) / LCM(a, b)

LCM(1, 87) = 87

GCD(1, 87) = ( 1 x 87 ) / 87

GCD(1, 87) = 87 / 87

GCD(1, 87) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 18

The formula of GCD is GCD(a, b) = ( a x b) / LCM(a, b)

LCM(1, 18) = 18

GCD(1, 18) = ( 1 x 18 ) / 18

GCD(1, 18) = 18 / 18

GCD(1, 18) = 1

GCD of 79, 78, 87, 18 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 69, 50, 49, 93
• GCD of 42, 42, 49, 80
• GCD of 66, 42, 81, 45
• GCD of 69, 88, 88, 22
• GCD of 58, 36, 60, 61

1. What is the GCD of 79, 78, 87, 18?

GCD of 79, 78, 87, 18 is 1

2. Where do I get the detailed procedure to find GCD of 79, 78, 87, 18?

You can find a detailed procedure to find GCD of 79, 78, 87, 18 on our page.

3. How to find GCD of 79, 78, 87, 18 on a calculator?

You can find the GCD of 79, 78, 87, 18 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.