GCD of 142, 856, 81, 638 Calculator

Given Input numbers are 142, 856, 81, 638

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

Divisors of 142

List of positive integer divisors of 142 that divides 142 without a remainder.

1, 2, 71, 142

Divisors of 856

List of positive integer divisors of 856 that divides 856 without a remainder.

1, 2, 4, 8, 107, 214, 428, 856

Divisors of 81

List of positive integer divisors of 81 that divides 81 without a remainder.

1, 3, 9, 27, 81

Divisors of 638

List of positive integer divisors of 638 that divides 638 without a remainder.

1, 2, 11, 22, 29, 58, 319, 638

Greatest Common Divisior

We found the divisors of 142, 856, 81, 638 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 142, 856, 81, 638 is 1.

Therefore, GCD of numbers 142, 856, 81, 638 is 1

Given Input Data is 142, 856, 81, 638

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

Prime Factorization of 142 is 2 x 71

Prime Factorization of 856 is 2 x 2 x 2 x 107

Prime Factorization of 81 is 3 x 3 x 3 x 3

Prime Factorization of 638 is 2 x 11 x 29

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(142, 856) = 60776

GCD(142, 856) = ( 142 x 856 ) / 60776

GCD(142, 856) = 121552 / 60776

GCD(142, 856) = 2

Step2:

Here we consider the GCD from the above i.e. 2 as first number and the next as 81

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

LCM(2, 81) = 162

GCD(2, 81) = ( 2 x 81 ) / 162

GCD(2, 81) = 162 / 162

GCD(2, 81) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 638

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

LCM(1, 638) = 638

GCD(1, 638) = ( 1 x 638 ) / 638

GCD(1, 638) = 638 / 638

GCD(1, 638) = 1

GCD of 142, 856, 81, 638 is 1

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• GCD of 941, 364, 83, 169
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1. What is the GCD of 142, 856, 81, 638?

GCD of 142, 856, 81, 638 is 1

2. Where do I get the detailed procedure to find GCD of 142, 856, 81, 638?

You can find a detailed procedure to find GCD of 142, 856, 81, 638 on our page.

3. How to find GCD of 142, 856, 81, 638 on a calculator?

You can find the GCD of 142, 856, 81, 638 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.