GCD of 515, 245, 789, 139 Calculator

Given Input numbers are 515, 245, 789, 139

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

Divisors of 515

List of positive integer divisors of 515 that divides 515 without a remainder.

1, 5, 103, 515

Divisors of 245

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

1, 5, 7, 35, 49, 245

Divisors of 789

List of positive integer divisors of 789 that divides 789 without a remainder.

1, 3, 263, 789

Divisors of 139

List of positive integer divisors of 139 that divides 139 without a remainder.

1, 139

Greatest Common Divisior

We found the divisors of 515, 245, 789, 139 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 515, 245, 789, 139 is 1.

Therefore, GCD of numbers 515, 245, 789, 139 is 1

Given Input Data is 515, 245, 789, 139

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

Prime Factorization of 515 is 5 x 103

Prime Factorization of 245 is 5 x 7 x 7

Prime Factorization of 789 is 3 x 263

Prime Factorization of 139 is 139

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(515, 245) = 25235

GCD(515, 245) = ( 515 x 245 ) / 25235

GCD(515, 245) = 126175 / 25235

GCD(515, 245) = 5

Step2:

Here we consider the GCD from the above i.e. 5 as first number and the next as 789

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

LCM(5, 789) = 3945

GCD(5, 789) = ( 5 x 789 ) / 3945

GCD(5, 789) = 3945 / 3945

GCD(5, 789) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 139

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

LCM(1, 139) = 139

GCD(1, 139) = ( 1 x 139 ) / 139

GCD(1, 139) = 139 / 139

GCD(1, 139) = 1

GCD of 515, 245, 789, 139 is 1

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• GCD of 320, 812, 947, 113
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• GCD of 694, 689, 247, 462

1. What is the GCD of 515, 245, 789, 139?

GCD of 515, 245, 789, 139 is 1

2. Where do I get the detailed procedure to find GCD of 515, 245, 789, 139?

You can find a detailed procedure to find GCD of 515, 245, 789, 139 on our page.

3. How to find GCD of 515, 245, 789, 139 on a calculator?

You can find the GCD of 515, 245, 789, 139 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.