GCD of 28, 538, 689, 903 Calculator

Given Input numbers are 28, 538, 689, 903

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

Divisors of 28

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

1, 2, 4, 7, 14, 28

Divisors of 538

List of positive integer divisors of 538 that divides 538 without a remainder.

1, 2, 269, 538

Divisors of 689

List of positive integer divisors of 689 that divides 689 without a remainder.

1, 13, 53, 689

Divisors of 903

List of positive integer divisors of 903 that divides 903 without a remainder.

1, 3, 7, 21, 43, 129, 301, 903

Greatest Common Divisior

We found the divisors of 28, 538, 689, 903 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 28, 538, 689, 903 is 1.

Therefore, GCD of numbers 28, 538, 689, 903 is 1

Given Input Data is 28, 538, 689, 903

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

Prime Factorization of 28 is 2 x 2 x 7

Prime Factorization of 538 is 2 x 269

Prime Factorization of 689 is 13 x 53

Prime Factorization of 903 is 3 x 7 x 43

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(28, 538) = 7532

GCD(28, 538) = ( 28 x 538 ) / 7532

GCD(28, 538) = 15064 / 7532

GCD(28, 538) = 2

Step2:

Here we consider the GCD from the above i.e. 2 as first number and the next as 689

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

LCM(2, 689) = 1378

GCD(2, 689) = ( 2 x 689 ) / 1378

GCD(2, 689) = 1378 / 1378

GCD(2, 689) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 903

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

LCM(1, 903) = 903

GCD(1, 903) = ( 1 x 903 ) / 903

GCD(1, 903) = 903 / 903

GCD(1, 903) = 1

GCD of 28, 538, 689, 903 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 22, 414, 956, 890
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• GCD of 10, 266, 710, 448

1. What is the GCD of 28, 538, 689, 903?

GCD of 28, 538, 689, 903 is 1

2. Where do I get the detailed procedure to find GCD of 28, 538, 689, 903?

You can find a detailed procedure to find GCD of 28, 538, 689, 903 on our page.

3. How to find GCD of 28, 538, 689, 903 on a calculator?

You can find the GCD of 28, 538, 689, 903 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.