GCD of 647, 408, 97, 765 Calculator

Given Input numbers are 647, 408, 97, 765

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

Divisors of 647

List of positive integer divisors of 647 that divides 647 without a remainder.

1, 647

Divisors of 408

List of positive integer divisors of 408 that divides 408 without a remainder.

1, 2, 3, 4, 6, 8, 12, 17, 24, 34, 51, 68, 102, 136, 204, 408

Divisors of 97

List of positive integer divisors of 97 that divides 97 without a remainder.

1, 97

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

Greatest Common Divisior

We found the divisors of 647, 408, 97, 765 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 647, 408, 97, 765 is 1.

Therefore, GCD of numbers 647, 408, 97, 765 is 1

Given Input Data is 647, 408, 97, 765

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

Prime Factorization of 647 is 647

Prime Factorization of 408 is 2 x 2 x 2 x 3 x 17

Prime Factorization of 97 is 97

Prime Factorization of 765 is 3 x 3 x 5 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(647, 408) = 263976

GCD(647, 408) = ( 647 x 408 ) / 263976

GCD(647, 408) = 263976 / 263976

GCD(647, 408) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 97

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

LCM(1, 97) = 97

GCD(1, 97) = ( 1 x 97 ) / 97

GCD(1, 97) = 97 / 97

GCD(1, 97) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 765

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

LCM(1, 765) = 765

GCD(1, 765) = ( 1 x 765 ) / 765

GCD(1, 765) = 765 / 765

GCD(1, 765) = 1

GCD of 647, 408, 97, 765 is 1

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1. What is the GCD of 647, 408, 97, 765?

GCD of 647, 408, 97, 765 is 1

2. Where do I get the detailed procedure to find GCD of 647, 408, 97, 765?

You can find a detailed procedure to find GCD of 647, 408, 97, 765 on our page.

3. How to find GCD of 647, 408, 97, 765 on a calculator?

You can find the GCD of 647, 408, 97, 765 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.