GCD of 421, 197, 21, 263 Calculator

Given Input numbers are 421, 197, 21, 263

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

Divisors of 421

List of positive integer divisors of 421 that divides 421 without a remainder.

1, 421

Divisors of 197

List of positive integer divisors of 197 that divides 197 without a remainder.

1, 197

Divisors of 21

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

1, 3, 7, 21

Divisors of 263

List of positive integer divisors of 263 that divides 263 without a remainder.

1, 263

Greatest Common Divisior

We found the divisors of 421, 197, 21, 263 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 421, 197, 21, 263 is 1.

Therefore, GCD of numbers 421, 197, 21, 263 is 1

Given Input Data is 421, 197, 21, 263

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

Prime Factorization of 421 is 421

Prime Factorization of 197 is 197

Prime Factorization of 21 is 3 x 7

Prime Factorization of 263 is 263

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(421, 197) = 82937

GCD(421, 197) = ( 421 x 197 ) / 82937

GCD(421, 197) = 82937 / 82937

GCD(421, 197) = 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

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 263

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

LCM(1, 263) = 263

GCD(1, 263) = ( 1 x 263 ) / 263

GCD(1, 263) = 263 / 263

GCD(1, 263) = 1

GCD of 421, 197, 21, 263 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 946, 588, 54, 914
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• GCD of 579, 202, 95, 901

1. What is the GCD of 421, 197, 21, 263?

GCD of 421, 197, 21, 263 is 1

2. Where do I get the detailed procedure to find GCD of 421, 197, 21, 263?

You can find a detailed procedure to find GCD of 421, 197, 21, 263 on our page.

3. How to find GCD of 421, 197, 21, 263 on a calculator?

You can find the GCD of 421, 197, 21, 263 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.