GCD of 721, 145, 829, 621 Calculator

Given Input numbers are 721, 145, 829, 621

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

Divisors of 721

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

1, 7, 103, 721

Divisors of 145

List of positive integer divisors of 145 that divides 145 without a remainder.

1, 5, 29, 145

Divisors of 829

List of positive integer divisors of 829 that divides 829 without a remainder.

1, 829

Divisors of 621

List of positive integer divisors of 621 that divides 621 without a remainder.

1, 3, 9, 23, 27, 69, 207, 621

Greatest Common Divisior

We found the divisors of 721, 145, 829, 621 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 721, 145, 829, 621 is 1.

Therefore, GCD of numbers 721, 145, 829, 621 is 1

Given Input Data is 721, 145, 829, 621

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

Prime Factorization of 721 is 7 x 103

Prime Factorization of 145 is 5 x 29

Prime Factorization of 829 is 829

Prime Factorization of 621 is 3 x 3 x 3 x 23

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(721, 145) = 104545

GCD(721, 145) = ( 721 x 145 ) / 104545

GCD(721, 145) = 104545 / 104545

GCD(721, 145) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 829

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

LCM(1, 829) = 829

GCD(1, 829) = ( 1 x 829 ) / 829

GCD(1, 829) = 829 / 829

GCD(1, 829) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 621

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

LCM(1, 621) = 621

GCD(1, 621) = ( 1 x 621 ) / 621

GCD(1, 621) = 621 / 621

GCD(1, 621) = 1

GCD of 721, 145, 829, 621 is 1

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1. What is the GCD of 721, 145, 829, 621?

GCD of 721, 145, 829, 621 is 1

2. Where do I get the detailed procedure to find GCD of 721, 145, 829, 621?

You can find a detailed procedure to find GCD of 721, 145, 829, 621 on our page.

3. How to find GCD of 721, 145, 829, 621 on a calculator?

You can find the GCD of 721, 145, 829, 621 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.