GCD of 687, 404, 91, 402 Calculator

Given Input numbers are 687, 404, 91, 402

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

Divisors of 687

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

1, 3, 229, 687

Divisors of 404

List of positive integer divisors of 404 that divides 404 without a remainder.

1, 2, 4, 101, 202, 404

Divisors of 91

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

1, 7, 13, 91

Divisors of 402

List of positive integer divisors of 402 that divides 402 without a remainder.

1, 2, 3, 6, 67, 134, 201, 402

Greatest Common Divisior

We found the divisors of 687, 404, 91, 402 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 687, 404, 91, 402 is 1.

Therefore, GCD of numbers 687, 404, 91, 402 is 1

Given Input Data is 687, 404, 91, 402

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

Prime Factorization of 687 is 3 x 229

Prime Factorization of 404 is 2 x 2 x 101

Prime Factorization of 91 is 7 x 13

Prime Factorization of 402 is 2 x 3 x 67

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(687, 404) = 277548

GCD(687, 404) = ( 687 x 404 ) / 277548

GCD(687, 404) = 277548 / 277548

GCD(687, 404) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 91

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

LCM(1, 91) = 91

GCD(1, 91) = ( 1 x 91 ) / 91

GCD(1, 91) = 91 / 91

GCD(1, 91) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 402

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

LCM(1, 402) = 402

GCD(1, 402) = ( 1 x 402 ) / 402

GCD(1, 402) = 402 / 402

GCD(1, 402) = 1

GCD of 687, 404, 91, 402 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 370, 108, 12, 266
• GCD of 744, 287, 26, 300
• GCD of 557, 691, 25, 386
• GCD of 589, 603, 25, 753
• GCD of 514, 568, 13, 129

1. What is the GCD of 687, 404, 91, 402?

GCD of 687, 404, 91, 402 is 1

2. Where do I get the detailed procedure to find GCD of 687, 404, 91, 402?

You can find a detailed procedure to find GCD of 687, 404, 91, 402 on our page.

3. How to find GCD of 687, 404, 91, 402 on a calculator?

You can find the GCD of 687, 404, 91, 402 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.