GCD of 30, 157, 621, 403 Calculator

Given Input numbers are 30, 157, 621, 403

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

Divisors of 30

List of positive integer divisors of 30 that divides 30 without a remainder.

1, 2, 3, 5, 6, 10, 15, 30

Divisors of 157

List of positive integer divisors of 157 that divides 157 without a remainder.

1, 157

Divisors of 621

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

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

Divisors of 403

List of positive integer divisors of 403 that divides 403 without a remainder.

1, 13, 31, 403

Greatest Common Divisior

We found the divisors of 30, 157, 621, 403 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 30, 157, 621, 403 is 1.

Therefore, GCD of numbers 30, 157, 621, 403 is 1

Given Input Data is 30, 157, 621, 403

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

Prime Factorization of 30 is 2 x 3 x 5

Prime Factorization of 157 is 157

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

Prime Factorization of 403 is 13 x 31

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(30, 157) = 4710

GCD(30, 157) = ( 30 x 157 ) / 4710

GCD(30, 157) = 4710 / 4710

GCD(30, 157) = 1

Step2:

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

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 403

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

LCM(1, 403) = 403

GCD(1, 403) = ( 1 x 403 ) / 403

GCD(1, 403) = 403 / 403

GCD(1, 403) = 1

GCD of 30, 157, 621, 403 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 48, 265, 649, 844
• GCD of 62, 189, 758, 107
• GCD of 91, 894, 115, 842
• GCD of 34, 663, 133, 745
• GCD of 69, 486, 992, 580

1. What is the GCD of 30, 157, 621, 403?

GCD of 30, 157, 621, 403 is 1

2. Where do I get the detailed procedure to find GCD of 30, 157, 621, 403?

You can find a detailed procedure to find GCD of 30, 157, 621, 403 on our page.

3. How to find GCD of 30, 157, 621, 403 on a calculator?

You can find the GCD of 30, 157, 621, 403 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.