GCD of 121, 136, 28, 423 Calculator

Given Input numbers are 121, 136, 28, 423

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

Divisors of 121

List of positive integer divisors of 121 that divides 121 without a remainder.

1, 11, 121

Divisors of 136

List of positive integer divisors of 136 that divides 136 without a remainder.

1, 2, 4, 8, 17, 34, 68, 136

Divisors of 28

List of positive integer divisors of 28 that divides 28 without a remainder.

1, 2, 4, 7, 14, 28

Divisors of 423

List of positive integer divisors of 423 that divides 423 without a remainder.

1, 3, 9, 47, 141, 423

Greatest Common Divisior

We found the divisors of 121, 136, 28, 423 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 121, 136, 28, 423 is 1.

Therefore, GCD of numbers 121, 136, 28, 423 is 1

Given Input Data is 121, 136, 28, 423

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

Prime Factorization of 121 is 11 x 11

Prime Factorization of 136 is 2 x 2 x 2 x 17

Prime Factorization of 28 is 2 x 2 x 7

Prime Factorization of 423 is 3 x 3 x 47

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(121, 136) = 16456

GCD(121, 136) = ( 121 x 136 ) / 16456

GCD(121, 136) = 16456 / 16456

GCD(121, 136) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 28

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

LCM(1, 28) = 28

GCD(1, 28) = ( 1 x 28 ) / 28

GCD(1, 28) = 28 / 28

GCD(1, 28) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 423

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

LCM(1, 423) = 423

GCD(1, 423) = ( 1 x 423 ) / 423

GCD(1, 423) = 423 / 423

GCD(1, 423) = 1

GCD of 121, 136, 28, 423 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 844, 135, 28, 476
• GCD of 136, 624, 94, 831
• GCD of 763, 784, 81, 824
• GCD of 325, 669, 86, 249
• GCD of 884, 249, 82, 927

1. What is the GCD of 121, 136, 28, 423?

GCD of 121, 136, 28, 423 is 1

2. Where do I get the detailed procedure to find GCD of 121, 136, 28, 423?

You can find a detailed procedure to find GCD of 121, 136, 28, 423 on our page.

3. How to find GCD of 121, 136, 28, 423 on a calculator?

You can find the GCD of 121, 136, 28, 423 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.