GCD of 152, 977, 21, 663 Calculator

Given Input numbers are 152, 977, 21, 663

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

Divisors of 152

List of positive integer divisors of 152 that divides 152 without a remainder.

1, 2, 4, 8, 19, 38, 76, 152

Divisors of 977

List of positive integer divisors of 977 that divides 977 without a remainder.

1, 977

Divisors of 21

List of positive integer divisors of 21 that divides 21 without a remainder.

1, 3, 7, 21

Divisors of 663

List of positive integer divisors of 663 that divides 663 without a remainder.

1, 3, 13, 17, 39, 51, 221, 663

Greatest Common Divisior

We found the divisors of 152, 977, 21, 663 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 152, 977, 21, 663 is 1.

Therefore, GCD of numbers 152, 977, 21, 663 is 1

Given Input Data is 152, 977, 21, 663

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

Prime Factorization of 152 is 2 x 2 x 2 x 19

Prime Factorization of 977 is 977

Prime Factorization of 21 is 3 x 7

Prime Factorization of 663 is 3 x 13 x 17

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(152, 977) = 148504

GCD(152, 977) = ( 152 x 977 ) / 148504

GCD(152, 977) = 148504 / 148504

GCD(152, 977) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 21

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

LCM(1, 21) = 21

GCD(1, 21) = ( 1 x 21 ) / 21

GCD(1, 21) = 21 / 21

GCD(1, 21) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 663

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

LCM(1, 663) = 663

GCD(1, 663) = ( 1 x 663 ) / 663

GCD(1, 663) = 663 / 663

GCD(1, 663) = 1

GCD of 152, 977, 21, 663 is 1

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1. What is the GCD of 152, 977, 21, 663?

GCD of 152, 977, 21, 663 is 1

2. Where do I get the detailed procedure to find GCD of 152, 977, 21, 663?

You can find a detailed procedure to find GCD of 152, 977, 21, 663 on our page.

3. How to find GCD of 152, 977, 21, 663 on a calculator?

You can find the GCD of 152, 977, 21, 663 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.