GCD of 18, 647, 446, 404 Calculator

Given Input numbers are 18, 647, 446, 404

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

Divisors of 18

List of positive integer divisors of 18 that divides 18 without a remainder.

1, 2, 3, 6, 9, 18

Divisors of 647

List of positive integer divisors of 647 that divides 647 without a remainder.

1, 647

Divisors of 446

List of positive integer divisors of 446 that divides 446 without a remainder.

1, 2, 223, 446

Divisors of 404

List of positive integer divisors of 404 that divides 404 without a remainder.

1, 2, 4, 101, 202, 404

Greatest Common Divisior

We found the divisors of 18, 647, 446, 404 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 18, 647, 446, 404 is 1.

Therefore, GCD of numbers 18, 647, 446, 404 is 1

Given Input Data is 18, 647, 446, 404

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

Prime Factorization of 18 is 2 x 3 x 3

Prime Factorization of 647 is 647

Prime Factorization of 446 is 2 x 223

Prime Factorization of 404 is 2 x 2 x 101

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(18, 647) = 11646

GCD(18, 647) = ( 18 x 647 ) / 11646

GCD(18, 647) = 11646 / 11646

GCD(18, 647) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 446

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

LCM(1, 446) = 446

GCD(1, 446) = ( 1 x 446 ) / 446

GCD(1, 446) = 446 / 446

GCD(1, 446) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 404

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

LCM(1, 404) = 404

GCD(1, 404) = ( 1 x 404 ) / 404

GCD(1, 404) = 404 / 404

GCD(1, 404) = 1

GCD of 18, 647, 446, 404 is 1

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1. What is the GCD of 18, 647, 446, 404?

GCD of 18, 647, 446, 404 is 1

2. Where do I get the detailed procedure to find GCD of 18, 647, 446, 404?

You can find a detailed procedure to find GCD of 18, 647, 446, 404 on our page.

3. How to find GCD of 18, 647, 446, 404 on a calculator?

You can find the GCD of 18, 647, 446, 404 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.