GCD of 640, 210, 831, 581 Calculator

Given Input numbers are 640, 210, 831, 581

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

Divisors of 640

List of positive integer divisors of 640 that divides 640 without a remainder.

1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640

Divisors of 210

List of positive integer divisors of 210 that divides 210 without a remainder.

1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210

Divisors of 831

List of positive integer divisors of 831 that divides 831 without a remainder.

1, 3, 277, 831

Divisors of 581

List of positive integer divisors of 581 that divides 581 without a remainder.

1, 7, 83, 581

Greatest Common Divisior

We found the divisors of 640, 210, 831, 581 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 640, 210, 831, 581 is 1.

Therefore, GCD of numbers 640, 210, 831, 581 is 1

Given Input Data is 640, 210, 831, 581

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

Prime Factorization of 640 is 2 x 2 x 2 x 2 x 2 x 2 x 2 x 5

Prime Factorization of 210 is 2 x 3 x 5 x 7

Prime Factorization of 831 is 3 x 277

Prime Factorization of 581 is 7 x 83

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(640, 210) = 13440

GCD(640, 210) = ( 640 x 210 ) / 13440

GCD(640, 210) = 134400 / 13440

GCD(640, 210) = 10

Step2:

Here we consider the GCD from the above i.e. 10 as first number and the next as 831

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

LCM(10, 831) = 8310

GCD(10, 831) = ( 10 x 831 ) / 8310

GCD(10, 831) = 8310 / 8310

GCD(10, 831) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 581

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

LCM(1, 581) = 581

GCD(1, 581) = ( 1 x 581 ) / 581

GCD(1, 581) = 581 / 581

GCD(1, 581) = 1

GCD of 640, 210, 831, 581 is 1

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1. What is the GCD of 640, 210, 831, 581?

GCD of 640, 210, 831, 581 is 1

2. Where do I get the detailed procedure to find GCD of 640, 210, 831, 581?

You can find a detailed procedure to find GCD of 640, 210, 831, 581 on our page.

3. How to find GCD of 640, 210, 831, 581 on a calculator?

You can find the GCD of 640, 210, 831, 581 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.