GCD of 663, 765, 640, 153 Calculator

Given Input numbers are 663, 765, 640, 153

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 765

List of positive integer divisors of 765 that divides 765 without a remainder.

1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765

Divisors of 640

List of positive integer divisors of 640 that divides 640 without a remainder.

1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640

Divisors of 153

List of positive integer divisors of 153 that divides 153 without a remainder.

1, 3, 9, 17, 51, 153

Greatest Common Divisior

We found the divisors of 663, 765, 640, 153 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 663, 765, 640, 153 is 1.

Therefore, GCD of numbers 663, 765, 640, 153 is 1

Given Input Data is 663, 765, 640, 153

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 765 is 3 x 3 x 5 x 17

Prime Factorization of 640 is 2 x 2 x 2 x 2 x 2 x 2 x 2 x 5

Prime Factorization of 153 is 3 x 3 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, 765) = 9945

GCD(663, 765) = ( 663 x 765 ) / 9945

GCD(663, 765) = 507195 / 9945

GCD(663, 765) = 51

Step2:

Here we consider the GCD from the above i.e. 51 as first number and the next as 640

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

LCM(51, 640) = 32640

GCD(51, 640) = ( 51 x 640 ) / 32640

GCD(51, 640) = 32640 / 32640

GCD(51, 640) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 153

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

LCM(1, 153) = 153

GCD(1, 153) = ( 1 x 153 ) / 153

GCD(1, 153) = 153 / 153

GCD(1, 153) = 1

GCD of 663, 765, 640, 153 is 1

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• GCD of 443, 678, 422, 216
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1. What is the GCD of 663, 765, 640, 153?

GCD of 663, 765, 640, 153 is 1

2. Where do I get the detailed procedure to find GCD of 663, 765, 640, 153?

You can find a detailed procedure to find GCD of 663, 765, 640, 153 on our page.

3. How to find GCD of 663, 765, 640, 153 on a calculator?

You can find the GCD of 663, 765, 640, 153 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.