GCD of 645, 788, 118, 770 Calculator

Given Input numbers are 645, 788, 118, 770

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

Divisors of 645

List of positive integer divisors of 645 that divides 645 without a remainder.

1, 3, 5, 15, 43, 129, 215, 645

Divisors of 788

List of positive integer divisors of 788 that divides 788 without a remainder.

1, 2, 4, 197, 394, 788

Divisors of 118

List of positive integer divisors of 118 that divides 118 without a remainder.

1, 2, 59, 118

Divisors of 770

List of positive integer divisors of 770 that divides 770 without a remainder.

1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 154, 385, 770

Greatest Common Divisior

We found the divisors of 645, 788, 118, 770 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 645, 788, 118, 770 is 1.

Therefore, GCD of numbers 645, 788, 118, 770 is 1

Given Input Data is 645, 788, 118, 770

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

Prime Factorization of 645 is 3 x 5 x 43

Prime Factorization of 788 is 2 x 2 x 197

Prime Factorization of 118 is 2 x 59

Prime Factorization of 770 is 2 x 5 x 7 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(645, 788) = 508260

GCD(645, 788) = ( 645 x 788 ) / 508260

GCD(645, 788) = 508260 / 508260

GCD(645, 788) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 118

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

LCM(1, 118) = 118

GCD(1, 118) = ( 1 x 118 ) / 118

GCD(1, 118) = 118 / 118

GCD(1, 118) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 770

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

LCM(1, 770) = 770

GCD(1, 770) = ( 1 x 770 ) / 770

GCD(1, 770) = 770 / 770

GCD(1, 770) = 1

GCD of 645, 788, 118, 770 is 1

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• GCD of 654, 204, 105, 297

1. What is the GCD of 645, 788, 118, 770?

GCD of 645, 788, 118, 770 is 1

2. Where do I get the detailed procedure to find GCD of 645, 788, 118, 770?

You can find a detailed procedure to find GCD of 645, 788, 118, 770 on our page.

3. How to find GCD of 645, 788, 118, 770 on a calculator?

You can find the GCD of 645, 788, 118, 770 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.