GCD of 778, 397, 820, 161 Calculator

Given Input numbers are 778, 397, 820, 161

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

Divisors of 778

List of positive integer divisors of 778 that divides 778 without a remainder.

1, 2, 389, 778

Divisors of 397

List of positive integer divisors of 397 that divides 397 without a remainder.

1, 397

Divisors of 820

List of positive integer divisors of 820 that divides 820 without a remainder.

1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820

Divisors of 161

List of positive integer divisors of 161 that divides 161 without a remainder.

1, 7, 23, 161

Greatest Common Divisior

We found the divisors of 778, 397, 820, 161 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 778, 397, 820, 161 is 1.

Therefore, GCD of numbers 778, 397, 820, 161 is 1

Given Input Data is 778, 397, 820, 161

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

Prime Factorization of 778 is 2 x 389

Prime Factorization of 397 is 397

Prime Factorization of 820 is 2 x 2 x 5 x 41

Prime Factorization of 161 is 7 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(778, 397) = 308866

GCD(778, 397) = ( 778 x 397 ) / 308866

GCD(778, 397) = 308866 / 308866

GCD(778, 397) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 820

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

LCM(1, 820) = 820

GCD(1, 820) = ( 1 x 820 ) / 820

GCD(1, 820) = 820 / 820

GCD(1, 820) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 161

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

LCM(1, 161) = 161

GCD(1, 161) = ( 1 x 161 ) / 161

GCD(1, 161) = 161 / 161

GCD(1, 161) = 1

GCD of 778, 397, 820, 161 is 1

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1. What is the GCD of 778, 397, 820, 161?

GCD of 778, 397, 820, 161 is 1

2. Where do I get the detailed procedure to find GCD of 778, 397, 820, 161?

You can find a detailed procedure to find GCD of 778, 397, 820, 161 on our page.

3. How to find GCD of 778, 397, 820, 161 on a calculator?

You can find the GCD of 778, 397, 820, 161 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.