GCD of 660, 981, 91, 813 Calculator

Given Input numbers are 660, 981, 91, 813

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

Divisors of 660

List of positive integer divisors of 660 that divides 660 without a remainder.

1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 165, 220, 330, 660

Divisors of 981

List of positive integer divisors of 981 that divides 981 without a remainder.

1, 3, 9, 109, 327, 981

Divisors of 91

List of positive integer divisors of 91 that divides 91 without a remainder.

1, 7, 13, 91

Divisors of 813

List of positive integer divisors of 813 that divides 813 without a remainder.

1, 3, 271, 813

Greatest Common Divisior

We found the divisors of 660, 981, 91, 813 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 660, 981, 91, 813 is 1.

Therefore, GCD of numbers 660, 981, 91, 813 is 1

Given Input Data is 660, 981, 91, 813

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

Prime Factorization of 660 is 2 x 2 x 3 x 5 x 11

Prime Factorization of 981 is 3 x 3 x 109

Prime Factorization of 91 is 7 x 13

Prime Factorization of 813 is 3 x 271

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(660, 981) = 215820

GCD(660, 981) = ( 660 x 981 ) / 215820

GCD(660, 981) = 647460 / 215820

GCD(660, 981) = 3

Step2:

Here we consider the GCD from the above i.e. 3 as first number and the next as 91

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

LCM(3, 91) = 273

GCD(3, 91) = ( 3 x 91 ) / 273

GCD(3, 91) = 273 / 273

GCD(3, 91) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 813

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

LCM(1, 813) = 813

GCD(1, 813) = ( 1 x 813 ) / 813

GCD(1, 813) = 813 / 813

GCD(1, 813) = 1

GCD of 660, 981, 91, 813 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 184, 862, 52, 684
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• GCD of 188, 383, 98, 997

1. What is the GCD of 660, 981, 91, 813?

GCD of 660, 981, 91, 813 is 1

2. Where do I get the detailed procedure to find GCD of 660, 981, 91, 813?

You can find a detailed procedure to find GCD of 660, 981, 91, 813 on our page.

3. How to find GCD of 660, 981, 91, 813 on a calculator?

You can find the GCD of 660, 981, 91, 813 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.