GCD of 821, 100, 397 Calculator

Given Input numbers are 821, 100, 397

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

Divisors of 821

List of positive integer divisors of 821 that divides 821 without a remainder.

1, 821

Divisors of 100

List of positive integer divisors of 100 that divides 100 without a remainder.

1, 2, 4, 5, 10, 20, 25, 50, 100

Divisors of 397

List of positive integer divisors of 397 that divides 397 without a remainder.

1, 397

Greatest Common Divisior

We found the divisors of 821, 100, 397 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 821, 100, 397 is 1.

Therefore, GCD of numbers 821, 100, 397 is 1

Given Input Data is 821, 100, 397

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

Prime Factorization of 821 is 821

Prime Factorization of 100 is 2 x 2 x 5 x 5

Prime Factorization of 397 is 397

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(821, 100) = 82100

GCD(821, 100) = ( 821 x 100 ) / 82100

GCD(821, 100) = 82100 / 82100

GCD(821, 100) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 397

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

LCM(1, 397) = 397

GCD(1, 397) = ( 1 x 397 ) / 397

GCD(1, 397) = 397 / 397

GCD(1, 397) = 1

GCD of 821, 100, 397 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 899, 256, 481
• GCD of 609, 805, 541
• GCD of 649, 334, 488
• GCD of 485, 175, 273
• GCD of 685, 741, 149

1. What is the GCD of 821, 100, 397?

GCD of 821, 100, 397 is 1

2. Where do I get the detailed procedure to find GCD of 821, 100, 397?

You can find a detailed procedure to find GCD of 821, 100, 397 on our page.

3. How to find GCD of 821, 100, 397 on a calculator?

You can find the GCD of 821, 100, 397 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.