GCD of 991, 970, 581, 686 Calculator

Given Input numbers are 991, 970, 581, 686

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 970

List of positive integer divisors of 970 that divides 970 without a remainder.

1, 2, 5, 10, 97, 194, 485, 970

Divisors of 581

List of positive integer divisors of 581 that divides 581 without a remainder.

1, 7, 83, 581

Divisors of 686

List of positive integer divisors of 686 that divides 686 without a remainder.

1, 2, 7, 14, 49, 98, 343, 686

Greatest Common Divisior

We found the divisors of 991, 970, 581, 686 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 991, 970, 581, 686 is 1.

Therefore, GCD of numbers 991, 970, 581, 686 is 1

Given Input Data is 991, 970, 581, 686

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

Prime Factorization of 991 is 991

Prime Factorization of 970 is 2 x 5 x 97

Prime Factorization of 581 is 7 x 83

Prime Factorization of 686 is 2 x 7 x 7 x 7

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, 970) = 961270

GCD(991, 970) = ( 991 x 970 ) / 961270

GCD(991, 970) = 961270 / 961270

GCD(991, 970) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 581

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

LCM(1, 581) = 581

GCD(1, 581) = ( 1 x 581 ) / 581

GCD(1, 581) = 581 / 581

GCD(1, 581) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 686

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

LCM(1, 686) = 686

GCD(1, 686) = ( 1 x 686 ) / 686

GCD(1, 686) = 686 / 686

GCD(1, 686) = 1

GCD of 991, 970, 581, 686 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 973, 333, 855, 657
• GCD of 219, 603, 881, 431
• GCD of 389, 965, 578, 114
• GCD of 287, 655, 460, 745
• GCD of 686, 401, 508, 857

1. What is the GCD of 991, 970, 581, 686?

GCD of 991, 970, 581, 686 is 1

2. Where do I get the detailed procedure to find GCD of 991, 970, 581, 686?

You can find a detailed procedure to find GCD of 991, 970, 581, 686 on our page.

3. How to find GCD of 991, 970, 581, 686 on a calculator?

You can find the GCD of 991, 970, 581, 686 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.