GCD of 145, 579, 42, 721 Calculator

Given Input numbers are 145, 579, 42, 721

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

Divisors of 145

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

1, 5, 29, 145

Divisors of 579

List of positive integer divisors of 579 that divides 579 without a remainder.

1, 3, 193, 579

Divisors of 42

List of positive integer divisors of 42 that divides 42 without a remainder.

1, 2, 3, 6, 7, 14, 21, 42

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 145, 579, 42, 721 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 145, 579, 42, 721 is 1.

Therefore, GCD of numbers 145, 579, 42, 721 is 1

Given Input Data is 145, 579, 42, 721

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

Prime Factorization of 145 is 5 x 29

Prime Factorization of 579 is 3 x 193

Prime Factorization of 42 is 2 x 3 x 7

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(145, 579) = 83955

GCD(145, 579) = ( 145 x 579 ) / 83955

GCD(145, 579) = 83955 / 83955

GCD(145, 579) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 42

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

LCM(1, 42) = 42

GCD(1, 42) = ( 1 x 42 ) / 42

GCD(1, 42) = 42 / 42

GCD(1, 42) = 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 145, 579, 42, 721 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 685, 390, 26, 118
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• GCD of 395, 341, 94, 544

1. What is the GCD of 145, 579, 42, 721?

GCD of 145, 579, 42, 721 is 1

2. Where do I get the detailed procedure to find GCD of 145, 579, 42, 721?

You can find a detailed procedure to find GCD of 145, 579, 42, 721 on our page.

3. How to find GCD of 145, 579, 42, 721 on a calculator?

You can find the GCD of 145, 579, 42, 721 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.