GCD of 687, 503, 285, 663 Calculator

Given Input numbers are 687, 503, 285, 663

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

Divisors of 687

List of positive integer divisors of 687 that divides 687 without a remainder.

1, 3, 229, 687

Divisors of 503

List of positive integer divisors of 503 that divides 503 without a remainder.

1, 503

Divisors of 285

List of positive integer divisors of 285 that divides 285 without a remainder.

1, 3, 5, 15, 19, 57, 95, 285

Divisors of 663

List of positive integer divisors of 663 that divides 663 without a remainder.

1, 3, 13, 17, 39, 51, 221, 663

Greatest Common Divisior

We found the divisors of 687, 503, 285, 663 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 687, 503, 285, 663 is 1.

Therefore, GCD of numbers 687, 503, 285, 663 is 1

Given Input Data is 687, 503, 285, 663

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

Prime Factorization of 687 is 3 x 229

Prime Factorization of 503 is 503

Prime Factorization of 285 is 3 x 5 x 19

Prime Factorization of 663 is 3 x 13 x 17

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(687, 503) = 345561

GCD(687, 503) = ( 687 x 503 ) / 345561

GCD(687, 503) = 345561 / 345561

GCD(687, 503) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 285

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

LCM(1, 285) = 285

GCD(1, 285) = ( 1 x 285 ) / 285

GCD(1, 285) = 285 / 285

GCD(1, 285) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 663

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

LCM(1, 663) = 663

GCD(1, 663) = ( 1 x 663 ) / 663

GCD(1, 663) = 663 / 663

GCD(1, 663) = 1

GCD of 687, 503, 285, 663 is 1

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1. What is the GCD of 687, 503, 285, 663?

GCD of 687, 503, 285, 663 is 1

2. Where do I get the detailed procedure to find GCD of 687, 503, 285, 663?

You can find a detailed procedure to find GCD of 687, 503, 285, 663 on our page.

3. How to find GCD of 687, 503, 285, 663 on a calculator?

You can find the GCD of 687, 503, 285, 663 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.