GCD of 381, 161, 831, 438 Calculator

Given Input numbers are 381, 161, 831, 438

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

Divisors of 381

List of positive integer divisors of 381 that divides 381 without a remainder.

1, 3, 127, 381

Divisors of 161

List of positive integer divisors of 161 that divides 161 without a remainder.

1, 7, 23, 161

Divisors of 831

List of positive integer divisors of 831 that divides 831 without a remainder.

1, 3, 277, 831

Divisors of 438

List of positive integer divisors of 438 that divides 438 without a remainder.

1, 2, 3, 6, 73, 146, 219, 438

Greatest Common Divisior

We found the divisors of 381, 161, 831, 438 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 381, 161, 831, 438 is 1.

Therefore, GCD of numbers 381, 161, 831, 438 is 1

Given Input Data is 381, 161, 831, 438

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

Prime Factorization of 381 is 3 x 127

Prime Factorization of 161 is 7 x 23

Prime Factorization of 831 is 3 x 277

Prime Factorization of 438 is 2 x 3 x 73

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(381, 161) = 61341

GCD(381, 161) = ( 381 x 161 ) / 61341

GCD(381, 161) = 61341 / 61341

GCD(381, 161) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 831

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

LCM(1, 831) = 831

GCD(1, 831) = ( 1 x 831 ) / 831

GCD(1, 831) = 831 / 831

GCD(1, 831) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 438

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

LCM(1, 438) = 438

GCD(1, 438) = ( 1 x 438 ) / 438

GCD(1, 438) = 438 / 438

GCD(1, 438) = 1

GCD of 381, 161, 831, 438 is 1

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1. What is the GCD of 381, 161, 831, 438?

GCD of 381, 161, 831, 438 is 1

2. Where do I get the detailed procedure to find GCD of 381, 161, 831, 438?

You can find a detailed procedure to find GCD of 381, 161, 831, 438 on our page.

3. How to find GCD of 381, 161, 831, 438 on a calculator?

You can find the GCD of 381, 161, 831, 438 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.