GCD of 646, 990, 633, 207 Calculator

Given Input numbers are 646, 990, 633, 207

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

Divisors of 646

List of positive integer divisors of 646 that divides 646 without a remainder.

1, 2, 17, 19, 34, 38, 323, 646

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

Divisors of 633

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

1, 3, 211, 633

Divisors of 207

List of positive integer divisors of 207 that divides 207 without a remainder.

1, 3, 9, 23, 69, 207

Greatest Common Divisior

We found the divisors of 646, 990, 633, 207 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 646, 990, 633, 207 is 1.

Therefore, GCD of numbers 646, 990, 633, 207 is 1

Given Input Data is 646, 990, 633, 207

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

Prime Factorization of 646 is 2 x 17 x 19

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

Prime Factorization of 633 is 3 x 211

Prime Factorization of 207 is 3 x 3 x 23

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(646, 990) = 319770

GCD(646, 990) = ( 646 x 990 ) / 319770

GCD(646, 990) = 639540 / 319770

GCD(646, 990) = 2

Step2:

Here we consider the GCD from the above i.e. 2 as first number and the next as 633

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

LCM(2, 633) = 1266

GCD(2, 633) = ( 2 x 633 ) / 1266

GCD(2, 633) = 1266 / 1266

GCD(2, 633) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 207

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

LCM(1, 207) = 207

GCD(1, 207) = ( 1 x 207 ) / 207

GCD(1, 207) = 207 / 207

GCD(1, 207) = 1

GCD of 646, 990, 633, 207 is 1

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1. What is the GCD of 646, 990, 633, 207?

GCD of 646, 990, 633, 207 is 1

2. Where do I get the detailed procedure to find GCD of 646, 990, 633, 207?

You can find a detailed procedure to find GCD of 646, 990, 633, 207 on our page.

3. How to find GCD of 646, 990, 633, 207 on a calculator?

You can find the GCD of 646, 990, 633, 207 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.