GCD of 721, 545, 51, 680 Calculator

Given Input numbers are 721, 545, 51, 680

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 545

List of positive integer divisors of 545 that divides 545 without a remainder.

1, 5, 109, 545

Divisors of 51

List of positive integer divisors of 51 that divides 51 without a remainder.

1, 3, 17, 51

Divisors of 680

List of positive integer divisors of 680 that divides 680 without a remainder.

1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680

Greatest Common Divisior

We found the divisors of 721, 545, 51, 680 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 721, 545, 51, 680 is 1.

Therefore, GCD of numbers 721, 545, 51, 680 is 1

Given Input Data is 721, 545, 51, 680

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

Prime Factorization of 721 is 7 x 103

Prime Factorization of 545 is 5 x 109

Prime Factorization of 51 is 3 x 17

Prime Factorization of 680 is 2 x 2 x 2 x 5 x 17

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, 545) = 392945

GCD(721, 545) = ( 721 x 545 ) / 392945

GCD(721, 545) = 392945 / 392945

GCD(721, 545) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 51

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

LCM(1, 51) = 51

GCD(1, 51) = ( 1 x 51 ) / 51

GCD(1, 51) = 51 / 51

GCD(1, 51) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 680

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

LCM(1, 680) = 680

GCD(1, 680) = ( 1 x 680 ) / 680

GCD(1, 680) = 680 / 680

GCD(1, 680) = 1

GCD of 721, 545, 51, 680 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 229, 123, 63, 945
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• GCD of 992, 566, 34, 146

1. What is the GCD of 721, 545, 51, 680?

GCD of 721, 545, 51, 680 is 1

2. Where do I get the detailed procedure to find GCD of 721, 545, 51, 680?

You can find a detailed procedure to find GCD of 721, 545, 51, 680 on our page.

3. How to find GCD of 721, 545, 51, 680 on a calculator?

You can find the GCD of 721, 545, 51, 680 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.