GCD of 663, 496, 21, 136 Calculator

Given Input numbers are 663, 496, 21, 136

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

Divisors of 663

List of positive integer divisors of 663 that divides 663 without a remainder.

1, 3, 13, 17, 39, 51, 221, 663

Divisors of 496

List of positive integer divisors of 496 that divides 496 without a remainder.

1, 2, 4, 8, 16, 31, 62, 124, 248, 496

Divisors of 21

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

1, 3, 7, 21

Divisors of 136

List of positive integer divisors of 136 that divides 136 without a remainder.

1, 2, 4, 8, 17, 34, 68, 136

Greatest Common Divisior

We found the divisors of 663, 496, 21, 136 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 663, 496, 21, 136 is 1.

Therefore, GCD of numbers 663, 496, 21, 136 is 1

Given Input Data is 663, 496, 21, 136

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

Prime Factorization of 663 is 3 x 13 x 17

Prime Factorization of 496 is 2 x 2 x 2 x 2 x 31

Prime Factorization of 21 is 3 x 7

Prime Factorization of 136 is 2 x 2 x 2 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(663, 496) = 328848

GCD(663, 496) = ( 663 x 496 ) / 328848

GCD(663, 496) = 328848 / 328848

GCD(663, 496) = 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 136

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

LCM(1, 136) = 136

GCD(1, 136) = ( 1 x 136 ) / 136

GCD(1, 136) = 136 / 136

GCD(1, 136) = 1

GCD of 663, 496, 21, 136 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 717, 377, 65, 275
• GCD of 821, 543, 43, 342
• GCD of 237, 435, 95, 490
• GCD of 621, 831, 52, 577
• GCD of 135, 172, 69, 803

1. What is the GCD of 663, 496, 21, 136?

GCD of 663, 496, 21, 136 is 1

2. Where do I get the detailed procedure to find GCD of 663, 496, 21, 136?

You can find a detailed procedure to find GCD of 663, 496, 21, 136 on our page.

3. How to find GCD of 663, 496, 21, 136 on a calculator?

You can find the GCD of 663, 496, 21, 136 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.