GCD of 423, 602, 21 Calculator

Given Input numbers are 423, 602, 21

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

Divisors of 423

List of positive integer divisors of 423 that divides 423 without a remainder.

1, 3, 9, 47, 141, 423

Divisors of 602

List of positive integer divisors of 602 that divides 602 without a remainder.

1, 2, 7, 14, 43, 86, 301, 602

Divisors of 21

List of positive integer divisors of 21 that divides 21 without a remainder.

1, 3, 7, 21

Greatest Common Divisior

We found the divisors of 423, 602, 21 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 423, 602, 21 is 1.

Therefore, GCD of numbers 423, 602, 21 is 1

Given Input Data is 423, 602, 21

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

Prime Factorization of 423 is 3 x 3 x 47

Prime Factorization of 602 is 2 x 7 x 43

Prime Factorization of 21 is 3 x 7

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(423, 602) = 254646

GCD(423, 602) = ( 423 x 602 ) / 254646

GCD(423, 602) = 254646 / 254646

GCD(423, 602) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 21

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

LCM(1, 21) = 21

GCD(1, 21) = ( 1 x 21 ) / 21

GCD(1, 21) = 21 / 21

GCD(1, 21) = 1

GCD of 423, 602, 21 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 625, 933, 57
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• GCD of 613, 799, 20
• GCD of 565, 908, 24
• GCD of 723, 700, 94

1. What is the GCD of 423, 602, 21?

GCD of 423, 602, 21 is 1

2. Where do I get the detailed procedure to find GCD of 423, 602, 21?

You can find a detailed procedure to find GCD of 423, 602, 21 on our page.

3. How to find GCD of 423, 602, 21 on a calculator?

You can find the GCD of 423, 602, 21 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.