GCD of 399, 178, 419, 665 Calculator

Given Input numbers are 399, 178, 419, 665

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

Divisors of 399

List of positive integer divisors of 399 that divides 399 without a remainder.

1, 3, 7, 19, 21, 57, 133, 399

Divisors of 178

List of positive integer divisors of 178 that divides 178 without a remainder.

1, 2, 89, 178

Divisors of 419

List of positive integer divisors of 419 that divides 419 without a remainder.

1, 419

Divisors of 665

List of positive integer divisors of 665 that divides 665 without a remainder.

1, 5, 7, 19, 35, 95, 133, 665

Greatest Common Divisior

We found the divisors of 399, 178, 419, 665 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 399, 178, 419, 665 is 1.

Therefore, GCD of numbers 399, 178, 419, 665 is 1

Given Input Data is 399, 178, 419, 665

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

Prime Factorization of 399 is 3 x 7 x 19

Prime Factorization of 178 is 2 x 89

Prime Factorization of 419 is 419

Prime Factorization of 665 is 5 x 7 x 19

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(399, 178) = 71022

GCD(399, 178) = ( 399 x 178 ) / 71022

GCD(399, 178) = 71022 / 71022

GCD(399, 178) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 419

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

LCM(1, 419) = 419

GCD(1, 419) = ( 1 x 419 ) / 419

GCD(1, 419) = 419 / 419

GCD(1, 419) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 665

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

LCM(1, 665) = 665

GCD(1, 665) = ( 1 x 665 ) / 665

GCD(1, 665) = 665 / 665

GCD(1, 665) = 1

GCD of 399, 178, 419, 665 is 1

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1. What is the GCD of 399, 178, 419, 665?

GCD of 399, 178, 419, 665 is 1

2. Where do I get the detailed procedure to find GCD of 399, 178, 419, 665?

You can find a detailed procedure to find GCD of 399, 178, 419, 665 on our page.

3. How to find GCD of 399, 178, 419, 665 on a calculator?

You can find the GCD of 399, 178, 419, 665 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.