GCD of 251, 646, 786, 428 Calculator

Given Input numbers are 251, 646, 786, 428

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

Divisors of 251

List of positive integer divisors of 251 that divides 251 without a remainder.

1, 251

Divisors of 646

List of positive integer divisors of 646 that divides 646 without a remainder.

1, 2, 17, 19, 34, 38, 323, 646

Divisors of 786

List of positive integer divisors of 786 that divides 786 without a remainder.

1, 2, 3, 6, 131, 262, 393, 786

Divisors of 428

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

1, 2, 4, 107, 214, 428

Greatest Common Divisior

We found the divisors of 251, 646, 786, 428 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 251, 646, 786, 428 is 1.

Therefore, GCD of numbers 251, 646, 786, 428 is 1

Given Input Data is 251, 646, 786, 428

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

Prime Factorization of 251 is 251

Prime Factorization of 646 is 2 x 17 x 19

Prime Factorization of 786 is 2 x 3 x 131

Prime Factorization of 428 is 2 x 2 x 107

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(251, 646) = 162146

GCD(251, 646) = ( 251 x 646 ) / 162146

GCD(251, 646) = 162146 / 162146

GCD(251, 646) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 786

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

LCM(1, 786) = 786

GCD(1, 786) = ( 1 x 786 ) / 786

GCD(1, 786) = 786 / 786

GCD(1, 786) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 428

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

LCM(1, 428) = 428

GCD(1, 428) = ( 1 x 428 ) / 428

GCD(1, 428) = 428 / 428

GCD(1, 428) = 1

GCD of 251, 646, 786, 428 is 1

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1. What is the GCD of 251, 646, 786, 428?

GCD of 251, 646, 786, 428 is 1

2. Where do I get the detailed procedure to find GCD of 251, 646, 786, 428?

You can find a detailed procedure to find GCD of 251, 646, 786, 428 on our page.

3. How to find GCD of 251, 646, 786, 428 on a calculator?

You can find the GCD of 251, 646, 786, 428 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.