GCD of 830, 640, 721 Calculator

Given Input numbers are 830, 640, 721

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

Divisors of 830

List of positive integer divisors of 830 that divides 830 without a remainder.

1, 2, 5, 10, 83, 166, 415, 830

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 721

List of positive integer divisors of 721 that divides 721 without a remainder.

1, 7, 103, 721

Greatest Common Divisior

We found the divisors of 830, 640, 721 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 830, 640, 721 is 1.

Therefore, GCD of numbers 830, 640, 721 is 1

Given Input Data is 830, 640, 721

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

Prime Factorization of 830 is 2 x 5 x 83

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

Prime Factorization of 721 is 7 x 103

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(830, 640) = 53120

GCD(830, 640) = ( 830 x 640 ) / 53120

GCD(830, 640) = 531200 / 53120

GCD(830, 640) = 10

Step2:

Here we consider the GCD from the above i.e. 10 as first number and the next as 721

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

LCM(10, 721) = 7210

GCD(10, 721) = ( 10 x 721 ) / 7210

GCD(10, 721) = 7210 / 7210

GCD(10, 721) = 1

GCD of 830, 640, 721 is 1

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1. What is the GCD of 830, 640, 721?

GCD of 830, 640, 721 is 1

2. Where do I get the detailed procedure to find GCD of 830, 640, 721?

You can find a detailed procedure to find GCD of 830, 640, 721 on our page.

3. How to find GCD of 830, 640, 721 on a calculator?

You can find the GCD of 830, 640, 721 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.