GCD of 702, 661, 647, 721 Calculator

Given Input numbers are 702, 661, 647, 721

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

Divisors of 702

List of positive integer divisors of 702 that divides 702 without a remainder.

1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 78, 117, 234, 351, 702

Divisors of 661

List of positive integer divisors of 661 that divides 661 without a remainder.

1, 661

Divisors of 647

List of positive integer divisors of 647 that divides 647 without a remainder.

1, 647

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 702, 661, 647, 721 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 702, 661, 647, 721 is 1.

Therefore, GCD of numbers 702, 661, 647, 721 is 1

Given Input Data is 702, 661, 647, 721

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

Prime Factorization of 702 is 2 x 3 x 3 x 3 x 13

Prime Factorization of 661 is 661

Prime Factorization of 647 is 647

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(702, 661) = 464022

GCD(702, 661) = ( 702 x 661 ) / 464022

GCD(702, 661) = 464022 / 464022

GCD(702, 661) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 647

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

LCM(1, 647) = 647

GCD(1, 647) = ( 1 x 647 ) / 647

GCD(1, 647) = 647 / 647

GCD(1, 647) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 721

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

LCM(1, 721) = 721

GCD(1, 721) = ( 1 x 721 ) / 721

GCD(1, 721) = 721 / 721

GCD(1, 721) = 1

GCD of 702, 661, 647, 721 is 1

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1. What is the GCD of 702, 661, 647, 721?

GCD of 702, 661, 647, 721 is 1

2. Where do I get the detailed procedure to find GCD of 702, 661, 647, 721?

You can find a detailed procedure to find GCD of 702, 661, 647, 721 on our page.

3. How to find GCD of 702, 661, 647, 721 on a calculator?

You can find the GCD of 702, 661, 647, 721 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.