GCD of 351, 305, 438, 245 Calculator

Given Input numbers are 351, 305, 438, 245

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

Divisors of 351

List of positive integer divisors of 351 that divides 351 without a remainder.

1, 3, 9, 13, 27, 39, 117, 351

Divisors of 305

List of positive integer divisors of 305 that divides 305 without a remainder.

1, 5, 61, 305

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 245

List of positive integer divisors of 245 that divides 245 without a remainder.

1, 5, 7, 35, 49, 245

Greatest Common Divisior

We found the divisors of 351, 305, 438, 245 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 351, 305, 438, 245 is 1.

Therefore, GCD of numbers 351, 305, 438, 245 is 1

Given Input Data is 351, 305, 438, 245

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

Prime Factorization of 351 is 3 x 3 x 3 x 13

Prime Factorization of 305 is 5 x 61

Prime Factorization of 438 is 2 x 3 x 73

Prime Factorization of 245 is 5 x 7 x 7

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(351, 305) = 107055

GCD(351, 305) = ( 351 x 305 ) / 107055

GCD(351, 305) = 107055 / 107055

GCD(351, 305) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 438

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

LCM(1, 438) = 438

GCD(1, 438) = ( 1 x 438 ) / 438

GCD(1, 438) = 438 / 438

GCD(1, 438) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 245

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

LCM(1, 245) = 245

GCD(1, 245) = ( 1 x 245 ) / 245

GCD(1, 245) = 245 / 245

GCD(1, 245) = 1

GCD of 351, 305, 438, 245 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 741, 239, 152, 827
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• GCD of 787, 268, 594, 187

1. What is the GCD of 351, 305, 438, 245?

GCD of 351, 305, 438, 245 is 1

2. Where do I get the detailed procedure to find GCD of 351, 305, 438, 245?

You can find a detailed procedure to find GCD of 351, 305, 438, 245 on our page.

3. How to find GCD of 351, 305, 438, 245 on a calculator?

You can find the GCD of 351, 305, 438, 245 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.