GCD of 987, 121, 87, 291 Calculator

Given Input numbers are 987, 121, 87, 291

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

Divisors of 987

List of positive integer divisors of 987 that divides 987 without a remainder.

1, 3, 7, 21, 47, 141, 329, 987

Divisors of 121

List of positive integer divisors of 121 that divides 121 without a remainder.

1, 11, 121

Divisors of 87

List of positive integer divisors of 87 that divides 87 without a remainder.

1, 3, 29, 87

Divisors of 291

List of positive integer divisors of 291 that divides 291 without a remainder.

1, 3, 97, 291

Greatest Common Divisior

We found the divisors of 987, 121, 87, 291 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 987, 121, 87, 291 is 1.

Therefore, GCD of numbers 987, 121, 87, 291 is 1

Given Input Data is 987, 121, 87, 291

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

Prime Factorization of 987 is 3 x 7 x 47

Prime Factorization of 121 is 11 x 11

Prime Factorization of 87 is 3 x 29

Prime Factorization of 291 is 3 x 97

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(987, 121) = 119427

GCD(987, 121) = ( 987 x 121 ) / 119427

GCD(987, 121) = 119427 / 119427

GCD(987, 121) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 87

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

LCM(1, 87) = 87

GCD(1, 87) = ( 1 x 87 ) / 87

GCD(1, 87) = 87 / 87

GCD(1, 87) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 291

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

LCM(1, 291) = 291

GCD(1, 291) = ( 1 x 291 ) / 291

GCD(1, 291) = 291 / 291

GCD(1, 291) = 1

GCD of 987, 121, 87, 291 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 632, 643, 91, 670
• GCD of 518, 292, 94, 609
• GCD of 889, 357, 42, 987
• GCD of 483, 186, 20, 926
• GCD of 208, 372, 81, 818

1. What is the GCD of 987, 121, 87, 291?

GCD of 987, 121, 87, 291 is 1

2. Where do I get the detailed procedure to find GCD of 987, 121, 87, 291?

You can find a detailed procedure to find GCD of 987, 121, 87, 291 on our page.

3. How to find GCD of 987, 121, 87, 291 on a calculator?

You can find the GCD of 987, 121, 87, 291 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.