GCD of 470, 330, 77, 640 Calculator

Given Input numbers are 470, 330, 77, 640

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

Divisors of 470

List of positive integer divisors of 470 that divides 470 without a remainder.

1, 2, 5, 10, 47, 94, 235, 470

Divisors of 330

List of positive integer divisors of 330 that divides 330 without a remainder.

1, 2, 3, 5, 6, 10, 11, 15, 22, 30, 33, 55, 66, 110, 165, 330

Divisors of 77

List of positive integer divisors of 77 that divides 77 without a remainder.

1, 7, 11, 77

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

Greatest Common Divisior

We found the divisors of 470, 330, 77, 640 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 470, 330, 77, 640 is 1.

Therefore, GCD of numbers 470, 330, 77, 640 is 1

Given Input Data is 470, 330, 77, 640

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

Prime Factorization of 470 is 2 x 5 x 47

Prime Factorization of 330 is 2 x 3 x 5 x 11

Prime Factorization of 77 is 7 x 11

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

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(470, 330) = 15510

GCD(470, 330) = ( 470 x 330 ) / 15510

GCD(470, 330) = 155100 / 15510

GCD(470, 330) = 10

Step2:

Here we consider the GCD from the above i.e. 10 as first number and the next as 77

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

LCM(10, 77) = 770

GCD(10, 77) = ( 10 x 77 ) / 770

GCD(10, 77) = 770 / 770

GCD(10, 77) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 640

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

LCM(1, 640) = 640

GCD(1, 640) = ( 1 x 640 ) / 640

GCD(1, 640) = 640 / 640

GCD(1, 640) = 1

GCD of 470, 330, 77, 640 is 1

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1. What is the GCD of 470, 330, 77, 640?

GCD of 470, 330, 77, 640 is 1

2. Where do I get the detailed procedure to find GCD of 470, 330, 77, 640?

You can find a detailed procedure to find GCD of 470, 330, 77, 640 on our page.

3. How to find GCD of 470, 330, 77, 640 on a calculator?

You can find the GCD of 470, 330, 77, 640 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.