GCD of 290, 779, 28, 691 Calculator

Given Input numbers are 290, 779, 28, 691

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

Divisors of 290

List of positive integer divisors of 290 that divides 290 without a remainder.

1, 2, 5, 10, 29, 58, 145, 290

Divisors of 779

List of positive integer divisors of 779 that divides 779 without a remainder.

1, 19, 41, 779

Divisors of 28

List of positive integer divisors of 28 that divides 28 without a remainder.

1, 2, 4, 7, 14, 28

Divisors of 691

List of positive integer divisors of 691 that divides 691 without a remainder.

1, 691

Greatest Common Divisior

We found the divisors of 290, 779, 28, 691 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 290, 779, 28, 691 is 1.

Therefore, GCD of numbers 290, 779, 28, 691 is 1

Given Input Data is 290, 779, 28, 691

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

Prime Factorization of 290 is 2 x 5 x 29

Prime Factorization of 779 is 19 x 41

Prime Factorization of 28 is 2 x 2 x 7

Prime Factorization of 691 is 691

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(290, 779) = 225910

GCD(290, 779) = ( 290 x 779 ) / 225910

GCD(290, 779) = 225910 / 225910

GCD(290, 779) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 28

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

LCM(1, 28) = 28

GCD(1, 28) = ( 1 x 28 ) / 28

GCD(1, 28) = 28 / 28

GCD(1, 28) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 691

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

LCM(1, 691) = 691

GCD(1, 691) = ( 1 x 691 ) / 691

GCD(1, 691) = 691 / 691

GCD(1, 691) = 1

GCD of 290, 779, 28, 691 is 1

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1. What is the GCD of 290, 779, 28, 691?

GCD of 290, 779, 28, 691 is 1

2. Where do I get the detailed procedure to find GCD of 290, 779, 28, 691?

You can find a detailed procedure to find GCD of 290, 779, 28, 691 on our page.

3. How to find GCD of 290, 779, 28, 691 on a calculator?

You can find the GCD of 290, 779, 28, 691 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.