GCD of 77, 679, 555, 987 Calculator

Given Input numbers are 77, 679, 555, 987

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

Divisors of 77

List of positive integer divisors of 77 that divides 77 without a remainder.

1, 7, 11, 77

Divisors of 679

List of positive integer divisors of 679 that divides 679 without a remainder.

1, 7, 97, 679

Divisors of 555

List of positive integer divisors of 555 that divides 555 without a remainder.

1, 3, 5, 15, 37, 111, 185, 555

Divisors of 987

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

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

Greatest Common Divisior

We found the divisors of 77, 679, 555, 987 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 77, 679, 555, 987 is 1.

Therefore, GCD of numbers 77, 679, 555, 987 is 1

Given Input Data is 77, 679, 555, 987

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

Prime Factorization of 77 is 7 x 11

Prime Factorization of 679 is 7 x 97

Prime Factorization of 555 is 3 x 5 x 37

Prime Factorization of 987 is 3 x 7 x 47

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(77, 679) = 7469

GCD(77, 679) = ( 77 x 679 ) / 7469

GCD(77, 679) = 52283 / 7469

GCD(77, 679) = 7

Step2:

Here we consider the GCD from the above i.e. 7 as first number and the next as 555

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

LCM(7, 555) = 3885

GCD(7, 555) = ( 7 x 555 ) / 3885

GCD(7, 555) = 3885 / 3885

GCD(7, 555) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 987

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

LCM(1, 987) = 987

GCD(1, 987) = ( 1 x 987 ) / 987

GCD(1, 987) = 987 / 987

GCD(1, 987) = 1

GCD of 77, 679, 555, 987 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 92, 269, 303, 915
• GCD of 63, 451, 887, 354
• GCD of 26, 923, 742, 327
• GCD of 74, 931, 104, 632
• GCD of 93, 298, 769, 905

1. What is the GCD of 77, 679, 555, 987?

GCD of 77, 679, 555, 987 is 1

2. Where do I get the detailed procedure to find GCD of 77, 679, 555, 987?

You can find a detailed procedure to find GCD of 77, 679, 555, 987 on our page.

3. How to find GCD of 77, 679, 555, 987 on a calculator?

You can find the GCD of 77, 679, 555, 987 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.