GCD of 221, 633, 61, 990 Calculator

Given Input numbers are 221, 633, 61, 990

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

Divisors of 221

List of positive integer divisors of 221 that divides 221 without a remainder.

1, 13, 17, 221

Divisors of 633

List of positive integer divisors of 633 that divides 633 without a remainder.

1, 3, 211, 633

Divisors of 61

List of positive integer divisors of 61 that divides 61 without a remainder.

1, 61

Divisors of 990

List of positive integer divisors of 990 that divides 990 without a remainder.

1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 90, 99, 110, 165, 198, 330, 495, 990

Greatest Common Divisior

We found the divisors of 221, 633, 61, 990 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 221, 633, 61, 990 is 1.

Therefore, GCD of numbers 221, 633, 61, 990 is 1

Given Input Data is 221, 633, 61, 990

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

Prime Factorization of 221 is 13 x 17

Prime Factorization of 633 is 3 x 211

Prime Factorization of 61 is 61

Prime Factorization of 990 is 2 x 3 x 3 x 5 x 11

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(221, 633) = 139893

GCD(221, 633) = ( 221 x 633 ) / 139893

GCD(221, 633) = 139893 / 139893

GCD(221, 633) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 61

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

LCM(1, 61) = 61

GCD(1, 61) = ( 1 x 61 ) / 61

GCD(1, 61) = 61 / 61

GCD(1, 61) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 990

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

LCM(1, 990) = 990

GCD(1, 990) = ( 1 x 990 ) / 990

GCD(1, 990) = 990 / 990

GCD(1, 990) = 1

GCD of 221, 633, 61, 990 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 143, 693, 74, 543
• GCD of 200, 616, 20, 789
• GCD of 373, 552, 39, 747
• GCD of 196, 462, 45, 545
• GCD of 221, 139, 62, 309

1. What is the GCD of 221, 633, 61, 990?

GCD of 221, 633, 61, 990 is 1

2. Where do I get the detailed procedure to find GCD of 221, 633, 61, 990?

You can find a detailed procedure to find GCD of 221, 633, 61, 990 on our page.

3. How to find GCD of 221, 633, 61, 990 on a calculator?

You can find the GCD of 221, 633, 61, 990 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.