GCD of 201, 438, 66, 170 Calculator

Given Input numbers are 201, 438, 66, 170

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

Divisors of 201

List of positive integer divisors of 201 that divides 201 without a remainder.

1, 3, 67, 201

Divisors of 438

List of positive integer divisors of 438 that divides 438 without a remainder.

1, 2, 3, 6, 73, 146, 219, 438

Divisors of 66

List of positive integer divisors of 66 that divides 66 without a remainder.

1, 2, 3, 6, 11, 22, 33, 66

Divisors of 170

List of positive integer divisors of 170 that divides 170 without a remainder.

1, 2, 5, 10, 17, 34, 85, 170

Greatest Common Divisior

We found the divisors of 201, 438, 66, 170 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 201, 438, 66, 170 is 1.

Therefore, GCD of numbers 201, 438, 66, 170 is 1

Given Input Data is 201, 438, 66, 170

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

Prime Factorization of 201 is 3 x 67

Prime Factorization of 438 is 2 x 3 x 73

Prime Factorization of 66 is 2 x 3 x 11

Prime Factorization of 170 is 2 x 5 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(201, 438) = 29346

GCD(201, 438) = ( 201 x 438 ) / 29346

GCD(201, 438) = 88038 / 29346

GCD(201, 438) = 3

Step2:

Here we consider the GCD from the above i.e. 3 as first number and the next as 66

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

LCM(3, 66) = 66

GCD(3, 66) = ( 3 x 66 ) / 66

GCD(3, 66) = 198 / 66

GCD(3, 66) = 3

Step3:

Here we consider the GCD from the above i.e. 3 as first number and the next as 170

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

LCM(3, 170) = 510

GCD(3, 170) = ( 3 x 170 ) / 510

GCD(3, 170) = 510 / 510

GCD(3, 170) = 1

GCD of 201, 438, 66, 170 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 397, 894, 83, 206
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• GCD of 554, 206, 71, 659

1. What is the GCD of 201, 438, 66, 170?

GCD of 201, 438, 66, 170 is 1

2. Where do I get the detailed procedure to find GCD of 201, 438, 66, 170?

You can find a detailed procedure to find GCD of 201, 438, 66, 170 on our page.

3. How to find GCD of 201, 438, 66, 170 on a calculator?

You can find the GCD of 201, 438, 66, 170 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.