GCD of 858, 455, 925, 438 Calculator

Given Input numbers are 858, 455, 925, 438

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

Divisors of 858

List of positive integer divisors of 858 that divides 858 without a remainder.

1, 2, 3, 6, 11, 13, 22, 26, 33, 39, 66, 78, 143, 286, 429, 858

Divisors of 455

List of positive integer divisors of 455 that divides 455 without a remainder.

1, 5, 7, 13, 35, 65, 91, 455

Divisors of 925

List of positive integer divisors of 925 that divides 925 without a remainder.

1, 5, 25, 37, 185, 925

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 858, 455, 925, 438 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 858, 455, 925, 438 is 1.

Therefore, GCD of numbers 858, 455, 925, 438 is 1

Given Input Data is 858, 455, 925, 438

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

Prime Factorization of 858 is 2 x 3 x 11 x 13

Prime Factorization of 455 is 5 x 7 x 13

Prime Factorization of 925 is 5 x 5 x 37

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(858, 455) = 30030

GCD(858, 455) = ( 858 x 455 ) / 30030

GCD(858, 455) = 390390 / 30030

GCD(858, 455) = 13

Step2:

Here we consider the GCD from the above i.e. 13 as first number and the next as 925

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

LCM(13, 925) = 12025

GCD(13, 925) = ( 13 x 925 ) / 12025

GCD(13, 925) = 12025 / 12025

GCD(13, 925) = 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 858, 455, 925, 438 is 1

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1. What is the GCD of 858, 455, 925, 438?

GCD of 858, 455, 925, 438 is 1

2. Where do I get the detailed procedure to find GCD of 858, 455, 925, 438?

You can find a detailed procedure to find GCD of 858, 455, 925, 438 on our page.

3. How to find GCD of 858, 455, 925, 438 on a calculator?

You can find the GCD of 858, 455, 925, 438 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.