GCD of 12, 68, 69 Calculator

Given Input numbers are 12, 68, 69

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

Divisors of 12

List of positive integer divisors of 12 that divides 12 without a remainder.

1, 2, 3, 4, 6, 12

Divisors of 68

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

1, 2, 4, 17, 34, 68

Divisors of 69

List of positive integer divisors of 69 that divides 69 without a remainder.

1, 3, 23, 69

Greatest Common Divisior

We found the divisors of 12, 68, 69 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 12, 68, 69 is 1.

Therefore, GCD of numbers 12, 68, 69 is 1

Given Input Data is 12, 68, 69

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

Prime Factorization of 12 is 2 x 2 x 3

Prime Factorization of 68 is 2 x 2 x 17

Prime Factorization of 69 is 3 x 23

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(12, 68) = 204

GCD(12, 68) = ( 12 x 68 ) / 204

GCD(12, 68) = 816 / 204

GCD(12, 68) = 4

Step2:

Here we consider the GCD from the above i.e. 4 as first number and the next as 69

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

LCM(4, 69) = 276

GCD(4, 69) = ( 4 x 69 ) / 276

GCD(4, 69) = 276 / 276

GCD(4, 69) = 1

GCD of 12, 68, 69 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 79, 69, 47
• GCD of 12, 67, 13
• GCD of 59, 47, 67
• GCD of 19, 50, 69
• GCD of 74, 19, 70

1. What is the GCD of 12, 68, 69?

GCD of 12, 68, 69 is 1

2. Where do I get the detailed procedure to find GCD of 12, 68, 69?

You can find a detailed procedure to find GCD of 12, 68, 69 on our page.

3. How to find GCD of 12, 68, 69 on a calculator?

You can find the GCD of 12, 68, 69 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.