GCD of 158, 998, 81, 653 Calculator

Given Input numbers are 158, 998, 81, 653

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

Divisors of 158

List of positive integer divisors of 158 that divides 158 without a remainder.

1, 2, 79, 158

Divisors of 998

List of positive integer divisors of 998 that divides 998 without a remainder.

1, 2, 499, 998

Divisors of 81

List of positive integer divisors of 81 that divides 81 without a remainder.

1, 3, 9, 27, 81

Divisors of 653

List of positive integer divisors of 653 that divides 653 without a remainder.

1, 653

Greatest Common Divisior

We found the divisors of 158, 998, 81, 653 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 158, 998, 81, 653 is 1.

Therefore, GCD of numbers 158, 998, 81, 653 is 1

Given Input Data is 158, 998, 81, 653

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

Prime Factorization of 158 is 2 x 79

Prime Factorization of 998 is 2 x 499

Prime Factorization of 81 is 3 x 3 x 3 x 3

Prime Factorization of 653 is 653

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(158, 998) = 78842

GCD(158, 998) = ( 158 x 998 ) / 78842

GCD(158, 998) = 157684 / 78842

GCD(158, 998) = 2

Step2:

Here we consider the GCD from the above i.e. 2 as first number and the next as 81

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

LCM(2, 81) = 162

GCD(2, 81) = ( 2 x 81 ) / 162

GCD(2, 81) = 162 / 162

GCD(2, 81) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 653

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

LCM(1, 653) = 653

GCD(1, 653) = ( 1 x 653 ) / 653

GCD(1, 653) = 653 / 653

GCD(1, 653) = 1

GCD of 158, 998, 81, 653 is 1

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1. What is the GCD of 158, 998, 81, 653?

GCD of 158, 998, 81, 653 is 1

2. Where do I get the detailed procedure to find GCD of 158, 998, 81, 653?

You can find a detailed procedure to find GCD of 158, 998, 81, 653 on our page.

3. How to find GCD of 158, 998, 81, 653 on a calculator?

You can find the GCD of 158, 998, 81, 653 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.