GCD of 147, 389, 813, 621 Calculator

Given Input numbers are 147, 389, 813, 621

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

Divisors of 147

List of positive integer divisors of 147 that divides 147 without a remainder.

1, 3, 7, 21, 49, 147

Divisors of 389

List of positive integer divisors of 389 that divides 389 without a remainder.

1, 389

Divisors of 813

List of positive integer divisors of 813 that divides 813 without a remainder.

1, 3, 271, 813

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 147, 389, 813, 621 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 147, 389, 813, 621 is 1.

Therefore, GCD of numbers 147, 389, 813, 621 is 1

Given Input Data is 147, 389, 813, 621

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

Prime Factorization of 147 is 3 x 7 x 7

Prime Factorization of 389 is 389

Prime Factorization of 813 is 3 x 271

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(147, 389) = 57183

GCD(147, 389) = ( 147 x 389 ) / 57183

GCD(147, 389) = 57183 / 57183

GCD(147, 389) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 813

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

LCM(1, 813) = 813

GCD(1, 813) = ( 1 x 813 ) / 813

GCD(1, 813) = 813 / 813

GCD(1, 813) = 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 147, 389, 813, 621 is 1

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1. What is the GCD of 147, 389, 813, 621?

GCD of 147, 389, 813, 621 is 1

2. Where do I get the detailed procedure to find GCD of 147, 389, 813, 621?

You can find a detailed procedure to find GCD of 147, 389, 813, 621 on our page.

3. How to find GCD of 147, 389, 813, 621 on a calculator?

You can find the GCD of 147, 389, 813, 621 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.