GCD of 133, 428, 630, 391 Calculator

Given Input numbers are 133, 428, 630, 391

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

Divisors of 133

List of positive integer divisors of 133 that divides 133 without a remainder.

1, 7, 19, 133

Divisors of 428

List of positive integer divisors of 428 that divides 428 without a remainder.

1, 2, 4, 107, 214, 428

Divisors of 630

List of positive integer divisors of 630 that divides 630 without a remainder.

1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 63, 70, 90, 105, 126, 210, 315, 630

Divisors of 391

List of positive integer divisors of 391 that divides 391 without a remainder.

1, 17, 23, 391

Greatest Common Divisior

We found the divisors of 133, 428, 630, 391 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 133, 428, 630, 391 is 1.

Therefore, GCD of numbers 133, 428, 630, 391 is 1

Given Input Data is 133, 428, 630, 391

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

Prime Factorization of 133 is 7 x 19

Prime Factorization of 428 is 2 x 2 x 107

Prime Factorization of 630 is 2 x 3 x 3 x 5 x 7

Prime Factorization of 391 is 17 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(133, 428) = 56924

GCD(133, 428) = ( 133 x 428 ) / 56924

GCD(133, 428) = 56924 / 56924

GCD(133, 428) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 630

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

LCM(1, 630) = 630

GCD(1, 630) = ( 1 x 630 ) / 630

GCD(1, 630) = 630 / 630

GCD(1, 630) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 391

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

LCM(1, 391) = 391

GCD(1, 391) = ( 1 x 391 ) / 391

GCD(1, 391) = 391 / 391

GCD(1, 391) = 1

GCD of 133, 428, 630, 391 is 1

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1. What is the GCD of 133, 428, 630, 391?

GCD of 133, 428, 630, 391 is 1

2. Where do I get the detailed procedure to find GCD of 133, 428, 630, 391?

You can find a detailed procedure to find GCD of 133, 428, 630, 391 on our page.

3. How to find GCD of 133, 428, 630, 391 on a calculator?

You can find the GCD of 133, 428, 630, 391 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.