GCD of 646, 637, 71, 424 Calculator

Given Input numbers are 646, 637, 71, 424

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

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 637

List of positive integer divisors of 637 that divides 637 without a remainder.

1, 7, 13, 49, 91, 637

Divisors of 71

List of positive integer divisors of 71 that divides 71 without a remainder.

1, 71

Divisors of 424

List of positive integer divisors of 424 that divides 424 without a remainder.

1, 2, 4, 8, 53, 106, 212, 424

Greatest Common Divisior

We found the divisors of 646, 637, 71, 424 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 646, 637, 71, 424 is 1.

Therefore, GCD of numbers 646, 637, 71, 424 is 1

Given Input Data is 646, 637, 71, 424

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

Prime Factorization of 646 is 2 x 17 x 19

Prime Factorization of 637 is 7 x 7 x 13

Prime Factorization of 71 is 71

Prime Factorization of 424 is 2 x 2 x 2 x 53

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(646, 637) = 411502

GCD(646, 637) = ( 646 x 637 ) / 411502

GCD(646, 637) = 411502 / 411502

GCD(646, 637) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 71

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

LCM(1, 71) = 71

GCD(1, 71) = ( 1 x 71 ) / 71

GCD(1, 71) = 71 / 71

GCD(1, 71) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 424

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

LCM(1, 424) = 424

GCD(1, 424) = ( 1 x 424 ) / 424

GCD(1, 424) = 424 / 424

GCD(1, 424) = 1

GCD of 646, 637, 71, 424 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 764, 758, 18, 269
• GCD of 425, 955, 56, 348
• GCD of 164, 845, 96, 260
• GCD of 293, 525, 32, 345
• GCD of 728, 445, 67, 229

1. What is the GCD of 646, 637, 71, 424?

GCD of 646, 637, 71, 424 is 1

2. Where do I get the detailed procedure to find GCD of 646, 637, 71, 424?

You can find a detailed procedure to find GCD of 646, 637, 71, 424 on our page.

3. How to find GCD of 646, 637, 71, 424 on a calculator?

You can find the GCD of 646, 637, 71, 424 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.