GCD of 478, 153, 991, 668 Calculator

Given Input numbers are 478, 153, 991, 668

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

Divisors of 478

List of positive integer divisors of 478 that divides 478 without a remainder.

1, 2, 239, 478

Divisors of 153

List of positive integer divisors of 153 that divides 153 without a remainder.

1, 3, 9, 17, 51, 153

Divisors of 991

List of positive integer divisors of 991 that divides 991 without a remainder.

1, 991

Divisors of 668

List of positive integer divisors of 668 that divides 668 without a remainder.

1, 2, 4, 167, 334, 668

Greatest Common Divisior

We found the divisors of 478, 153, 991, 668 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 478, 153, 991, 668 is 1.

Therefore, GCD of numbers 478, 153, 991, 668 is 1

Given Input Data is 478, 153, 991, 668

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

Prime Factorization of 478 is 2 x 239

Prime Factorization of 153 is 3 x 3 x 17

Prime Factorization of 991 is 991

Prime Factorization of 668 is 2 x 2 x 167

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(478, 153) = 73134

GCD(478, 153) = ( 478 x 153 ) / 73134

GCD(478, 153) = 73134 / 73134

GCD(478, 153) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 991

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

LCM(1, 991) = 991

GCD(1, 991) = ( 1 x 991 ) / 991

GCD(1, 991) = 991 / 991

GCD(1, 991) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 668

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

LCM(1, 668) = 668

GCD(1, 668) = ( 1 x 668 ) / 668

GCD(1, 668) = 668 / 668

GCD(1, 668) = 1

GCD of 478, 153, 991, 668 is 1

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1. What is the GCD of 478, 153, 991, 668?

GCD of 478, 153, 991, 668 is 1

2. Where do I get the detailed procedure to find GCD of 478, 153, 991, 668?

You can find a detailed procedure to find GCD of 478, 153, 991, 668 on our page.

3. How to find GCD of 478, 153, 991, 668 on a calculator?

You can find the GCD of 478, 153, 991, 668 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.