GCD of 647, 745, 47, 621 Calculator

Given Input numbers are 647, 745, 47, 621

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

Divisors of 647

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

1, 647

Divisors of 745

List of positive integer divisors of 745 that divides 745 without a remainder.

1, 5, 149, 745

Divisors of 47

List of positive integer divisors of 47 that divides 47 without a remainder.

1, 47

Divisors of 621

List of positive integer divisors of 621 that divides 621 without a remainder.

1, 3, 9, 23, 27, 69, 207, 621

Greatest Common Divisior

We found the divisors of 647, 745, 47, 621 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 647, 745, 47, 621 is 1.

Therefore, GCD of numbers 647, 745, 47, 621 is 1

Given Input Data is 647, 745, 47, 621

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

Prime Factorization of 647 is 647

Prime Factorization of 745 is 5 x 149

Prime Factorization of 47 is 47

Prime Factorization of 621 is 3 x 3 x 3 x 23

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(647, 745) = 482015

GCD(647, 745) = ( 647 x 745 ) / 482015

GCD(647, 745) = 482015 / 482015

GCD(647, 745) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 47

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

LCM(1, 47) = 47

GCD(1, 47) = ( 1 x 47 ) / 47

GCD(1, 47) = 47 / 47

GCD(1, 47) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 621

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

LCM(1, 621) = 621

GCD(1, 621) = ( 1 x 621 ) / 621

GCD(1, 621) = 621 / 621

GCD(1, 621) = 1

GCD of 647, 745, 47, 621 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 736, 594, 63, 117
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• GCD of 470, 963, 24, 626

1. What is the GCD of 647, 745, 47, 621?

GCD of 647, 745, 47, 621 is 1

2. Where do I get the detailed procedure to find GCD of 647, 745, 47, 621?

You can find a detailed procedure to find GCD of 647, 745, 47, 621 on our page.

3. How to find GCD of 647, 745, 47, 621 on a calculator?

You can find the GCD of 647, 745, 47, 621 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.