GCD of 997, 451, 478, 638 Calculator

Given Input numbers are 997, 451, 478, 638

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

Divisors of 997

List of positive integer divisors of 997 that divides 997 without a remainder.

1, 997

Divisors of 451

List of positive integer divisors of 451 that divides 451 without a remainder.

1, 11, 41, 451

Divisors of 478

List of positive integer divisors of 478 that divides 478 without a remainder.

1, 2, 239, 478

Divisors of 638

List of positive integer divisors of 638 that divides 638 without a remainder.

1, 2, 11, 22, 29, 58, 319, 638

Greatest Common Divisior

We found the divisors of 997, 451, 478, 638 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 997, 451, 478, 638 is 1.

Therefore, GCD of numbers 997, 451, 478, 638 is 1

Given Input Data is 997, 451, 478, 638

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

Prime Factorization of 997 is 997

Prime Factorization of 451 is 11 x 41

Prime Factorization of 478 is 2 x 239

Prime Factorization of 638 is 2 x 11 x 29

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(997, 451) = 449647

GCD(997, 451) = ( 997 x 451 ) / 449647

GCD(997, 451) = 449647 / 449647

GCD(997, 451) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 478

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

LCM(1, 478) = 478

GCD(1, 478) = ( 1 x 478 ) / 478

GCD(1, 478) = 478 / 478

GCD(1, 478) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 638

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

LCM(1, 638) = 638

GCD(1, 638) = ( 1 x 638 ) / 638

GCD(1, 638) = 638 / 638

GCD(1, 638) = 1

GCD of 997, 451, 478, 638 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 890, 724, 995, 988
• GCD of 115, 360, 550, 120
• GCD of 104, 556, 258, 896
• GCD of 711, 255, 264, 697
• GCD of 880, 703, 899, 695

1. What is the GCD of 997, 451, 478, 638?

GCD of 997, 451, 478, 638 is 1

2. Where do I get the detailed procedure to find GCD of 997, 451, 478, 638?

You can find a detailed procedure to find GCD of 997, 451, 478, 638 on our page.

3. How to find GCD of 997, 451, 478, 638 on a calculator?

You can find the GCD of 997, 451, 478, 638 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.