GCD of 76, 78, 61, 68 Calculator

Given Input numbers are 76, 78, 61, 68

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

Divisors of 76

List of positive integer divisors of 76 that divides 76 without a remainder.

1, 2, 4, 19, 38, 76

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 61

List of positive integer divisors of 61 that divides 61 without a remainder.

1, 61

Divisors of 68

List of positive integer divisors of 68 that divides 68 without a remainder.

1, 2, 4, 17, 34, 68

Greatest Common Divisior

We found the divisors of 76, 78, 61, 68 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 76, 78, 61, 68 is 1.

Therefore, GCD of numbers 76, 78, 61, 68 is 1

Given Input Data is 76, 78, 61, 68

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

Prime Factorization of 76 is 2 x 2 x 19

Prime Factorization of 78 is 2 x 3 x 13

Prime Factorization of 61 is 61

Prime Factorization of 68 is 2 x 2 x 17

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(76, 78) = 2964

GCD(76, 78) = ( 76 x 78 ) / 2964

GCD(76, 78) = 5928 / 2964

GCD(76, 78) = 2

Step2:

Here we consider the GCD from the above i.e. 2 as first number and the next as 61

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

LCM(2, 61) = 122

GCD(2, 61) = ( 2 x 61 ) / 122

GCD(2, 61) = 122 / 122

GCD(2, 61) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 68

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

LCM(1, 68) = 68

GCD(1, 68) = ( 1 x 68 ) / 68

GCD(1, 68) = 68 / 68

GCD(1, 68) = 1

GCD of 76, 78, 61, 68 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 81, 71, 44, 64
• GCD of 13, 32, 30, 97
• GCD of 50, 61, 53, 86
• GCD of 88, 83, 86, 44
• GCD of 21, 73, 66, 38

1. What is the GCD of 76, 78, 61, 68?

GCD of 76, 78, 61, 68 is 1

2. Where do I get the detailed procedure to find GCD of 76, 78, 61, 68?

You can find a detailed procedure to find GCD of 76, 78, 61, 68 on our page.

3. How to find GCD of 76, 78, 61, 68 on a calculator?

You can find the GCD of 76, 78, 61, 68 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.