GCD of 991, 426, 781, 170 Calculator

Given Input numbers are 991, 426, 781, 170

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

Divisors of 991

List of positive integer divisors of 991 that divides 991 without a remainder.

1, 991

Divisors of 426

List of positive integer divisors of 426 that divides 426 without a remainder.

1, 2, 3, 6, 71, 142, 213, 426

Divisors of 781

List of positive integer divisors of 781 that divides 781 without a remainder.

1, 11, 71, 781

Divisors of 170

List of positive integer divisors of 170 that divides 170 without a remainder.

1, 2, 5, 10, 17, 34, 85, 170

Greatest Common Divisior

We found the divisors of 991, 426, 781, 170 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 991, 426, 781, 170 is 1.

Therefore, GCD of numbers 991, 426, 781, 170 is 1

Given Input Data is 991, 426, 781, 170

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

Prime Factorization of 991 is 991

Prime Factorization of 426 is 2 x 3 x 71

Prime Factorization of 781 is 11 x 71

Prime Factorization of 170 is 2 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(991, 426) = 422166

GCD(991, 426) = ( 991 x 426 ) / 422166

GCD(991, 426) = 422166 / 422166

GCD(991, 426) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 781

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

LCM(1, 781) = 781

GCD(1, 781) = ( 1 x 781 ) / 781

GCD(1, 781) = 781 / 781

GCD(1, 781) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 170

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

LCM(1, 170) = 170

GCD(1, 170) = ( 1 x 170 ) / 170

GCD(1, 170) = 170 / 170

GCD(1, 170) = 1

GCD of 991, 426, 781, 170 is 1

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1. What is the GCD of 991, 426, 781, 170?

GCD of 991, 426, 781, 170 is 1

2. Where do I get the detailed procedure to find GCD of 991, 426, 781, 170?

You can find a detailed procedure to find GCD of 991, 426, 781, 170 on our page.

3. How to find GCD of 991, 426, 781, 170 on a calculator?

You can find the GCD of 991, 426, 781, 170 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.