GCD of 661, 230, 89, 991 Calculator

Given Input numbers are 661, 230, 89, 991

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

Divisors of 661

List of positive integer divisors of 661 that divides 661 without a remainder.

1, 661

Divisors of 230

List of positive integer divisors of 230 that divides 230 without a remainder.

1, 2, 5, 10, 23, 46, 115, 230

Divisors of 89

List of positive integer divisors of 89 that divides 89 without a remainder.

1, 89

Divisors of 991

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

1, 991

Greatest Common Divisior

We found the divisors of 661, 230, 89, 991 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 661, 230, 89, 991 is 1.

Therefore, GCD of numbers 661, 230, 89, 991 is 1

Given Input Data is 661, 230, 89, 991

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

Prime Factorization of 661 is 661

Prime Factorization of 230 is 2 x 5 x 23

Prime Factorization of 89 is 89

Prime Factorization of 991 is 991

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(661, 230) = 152030

GCD(661, 230) = ( 661 x 230 ) / 152030

GCD(661, 230) = 152030 / 152030

GCD(661, 230) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 89

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

LCM(1, 89) = 89

GCD(1, 89) = ( 1 x 89 ) / 89

GCD(1, 89) = 89 / 89

GCD(1, 89) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 991

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

LCM(1, 991) = 991

GCD(1, 991) = ( 1 x 991 ) / 991

GCD(1, 991) = 991 / 991

GCD(1, 991) = 1

GCD of 661, 230, 89, 991 is 1

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1. What is the GCD of 661, 230, 89, 991?

GCD of 661, 230, 89, 991 is 1

2. Where do I get the detailed procedure to find GCD of 661, 230, 89, 991?

You can find a detailed procedure to find GCD of 661, 230, 89, 991 on our page.

3. How to find GCD of 661, 230, 89, 991 on a calculator?

You can find the GCD of 661, 230, 89, 991 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.