GCD of 155, 306, 445, 491 Calculator

Given Input numbers are 155, 306, 445, 491

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

Divisors of 155

List of positive integer divisors of 155 that divides 155 without a remainder.

1, 5, 31, 155

Divisors of 306

List of positive integer divisors of 306 that divides 306 without a remainder.

1, 2, 3, 6, 9, 17, 18, 34, 51, 102, 153, 306

Divisors of 445

List of positive integer divisors of 445 that divides 445 without a remainder.

1, 5, 89, 445

Divisors of 491

List of positive integer divisors of 491 that divides 491 without a remainder.

1, 491

Greatest Common Divisior

We found the divisors of 155, 306, 445, 491 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 155, 306, 445, 491 is 1.

Therefore, GCD of numbers 155, 306, 445, 491 is 1

Given Input Data is 155, 306, 445, 491

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

Prime Factorization of 155 is 5 x 31

Prime Factorization of 306 is 2 x 3 x 3 x 17

Prime Factorization of 445 is 5 x 89

Prime Factorization of 491 is 491

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(155, 306) = 47430

GCD(155, 306) = ( 155 x 306 ) / 47430

GCD(155, 306) = 47430 / 47430

GCD(155, 306) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 445

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

LCM(1, 445) = 445

GCD(1, 445) = ( 1 x 445 ) / 445

GCD(1, 445) = 445 / 445

GCD(1, 445) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 491

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

LCM(1, 491) = 491

GCD(1, 491) = ( 1 x 491 ) / 491

GCD(1, 491) = 491 / 491

GCD(1, 491) = 1

GCD of 155, 306, 445, 491 is 1

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1. What is the GCD of 155, 306, 445, 491?

GCD of 155, 306, 445, 491 is 1

2. Where do I get the detailed procedure to find GCD of 155, 306, 445, 491?

You can find a detailed procedure to find GCD of 155, 306, 445, 491 on our page.

3. How to find GCD of 155, 306, 445, 491 on a calculator?

You can find the GCD of 155, 306, 445, 491 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.