GCD of 201, 218, 15, 391 Calculator

Given Input numbers are 201, 218, 15, 391

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 218

List of positive integer divisors of 218 that divides 218 without a remainder.

1, 2, 109, 218

Divisors of 15

List of positive integer divisors of 15 that divides 15 without a remainder.

1, 3, 5, 15

Divisors of 391

List of positive integer divisors of 391 that divides 391 without a remainder.

1, 17, 23, 391

Greatest Common Divisior

We found the divisors of 201, 218, 15, 391 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 201, 218, 15, 391 is 1.

Therefore, GCD of numbers 201, 218, 15, 391 is 1

Given Input Data is 201, 218, 15, 391

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

Prime Factorization of 201 is 3 x 67

Prime Factorization of 218 is 2 x 109

Prime Factorization of 15 is 3 x 5

Prime Factorization of 391 is 17 x 23

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, 218) = 43818

GCD(201, 218) = ( 201 x 218 ) / 43818

GCD(201, 218) = 43818 / 43818

GCD(201, 218) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 15

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

LCM(1, 15) = 15

GCD(1, 15) = ( 1 x 15 ) / 15

GCD(1, 15) = 15 / 15

GCD(1, 15) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 391

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

LCM(1, 391) = 391

GCD(1, 391) = ( 1 x 391 ) / 391

GCD(1, 391) = 391 / 391

GCD(1, 391) = 1

GCD of 201, 218, 15, 391 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 909, 762, 59, 416
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• GCD of 435, 565, 22, 648

1. What is the GCD of 201, 218, 15, 391?

GCD of 201, 218, 15, 391 is 1

2. Where do I get the detailed procedure to find GCD of 201, 218, 15, 391?

You can find a detailed procedure to find GCD of 201, 218, 15, 391 on our page.

3. How to find GCD of 201, 218, 15, 391 on a calculator?

You can find the GCD of 201, 218, 15, 391 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.