GCD of 91, 351, 436, 687 Calculator

Given Input numbers are 91, 351, 436, 687

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

Divisors of 91

List of positive integer divisors of 91 that divides 91 without a remainder.

1, 7, 13, 91

Divisors of 351

List of positive integer divisors of 351 that divides 351 without a remainder.

1, 3, 9, 13, 27, 39, 117, 351

Divisors of 436

List of positive integer divisors of 436 that divides 436 without a remainder.

1, 2, 4, 109, 218, 436

Divisors of 687

List of positive integer divisors of 687 that divides 687 without a remainder.

1, 3, 229, 687

Greatest Common Divisior

We found the divisors of 91, 351, 436, 687 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 91, 351, 436, 687 is 1.

Therefore, GCD of numbers 91, 351, 436, 687 is 1

Given Input Data is 91, 351, 436, 687

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

Prime Factorization of 91 is 7 x 13

Prime Factorization of 351 is 3 x 3 x 3 x 13

Prime Factorization of 436 is 2 x 2 x 109

Prime Factorization of 687 is 3 x 229

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(91, 351) = 2457

GCD(91, 351) = ( 91 x 351 ) / 2457

GCD(91, 351) = 31941 / 2457

GCD(91, 351) = 13

Step2:

Here we consider the GCD from the above i.e. 13 as first number and the next as 436

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

LCM(13, 436) = 5668

GCD(13, 436) = ( 13 x 436 ) / 5668

GCD(13, 436) = 5668 / 5668

GCD(13, 436) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 687

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

LCM(1, 687) = 687

GCD(1, 687) = ( 1 x 687 ) / 687

GCD(1, 687) = 687 / 687

GCD(1, 687) = 1

GCD of 91, 351, 436, 687 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 82, 217, 929, 838
• GCD of 72, 993, 627, 681
• GCD of 88, 627, 602, 340
• GCD of 39, 139, 806, 200
• GCD of 55, 953, 508, 473

1. What is the GCD of 91, 351, 436, 687?

GCD of 91, 351, 436, 687 is 1

2. Where do I get the detailed procedure to find GCD of 91, 351, 436, 687?

You can find a detailed procedure to find GCD of 91, 351, 436, 687 on our page.

3. How to find GCD of 91, 351, 436, 687 on a calculator?

You can find the GCD of 91, 351, 436, 687 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.