GCD of 521, 763, 78, 390 Calculator

Given Input numbers are 521, 763, 78, 390

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

Divisors of 521

List of positive integer divisors of 521 that divides 521 without a remainder.

1, 521

Divisors of 763

List of positive integer divisors of 763 that divides 763 without a remainder.

1, 7, 109, 763

Divisors of 78

List of positive integer divisors of 78 that divides 78 without a remainder.

1, 2, 3, 6, 13, 26, 39, 78

Divisors of 390

List of positive integer divisors of 390 that divides 390 without a remainder.

1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390

Greatest Common Divisior

We found the divisors of 521, 763, 78, 390 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 521, 763, 78, 390 is 1.

Therefore, GCD of numbers 521, 763, 78, 390 is 1

Given Input Data is 521, 763, 78, 390

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

Prime Factorization of 521 is 521

Prime Factorization of 763 is 7 x 109

Prime Factorization of 78 is 2 x 3 x 13

Prime Factorization of 390 is 2 x 3 x 5 x 13

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(521, 763) = 397523

GCD(521, 763) = ( 521 x 763 ) / 397523

GCD(521, 763) = 397523 / 397523

GCD(521, 763) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 78

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

LCM(1, 78) = 78

GCD(1, 78) = ( 1 x 78 ) / 78

GCD(1, 78) = 78 / 78

GCD(1, 78) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 390

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

LCM(1, 390) = 390

GCD(1, 390) = ( 1 x 390 ) / 390

GCD(1, 390) = 390 / 390

GCD(1, 390) = 1

GCD of 521, 763, 78, 390 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 650, 393, 65, 682
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• GCD of 692, 478, 53, 629
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• GCD of 953, 974, 60, 962

1. What is the GCD of 521, 763, 78, 390?

GCD of 521, 763, 78, 390 is 1

2. Where do I get the detailed procedure to find GCD of 521, 763, 78, 390?

You can find a detailed procedure to find GCD of 521, 763, 78, 390 on our page.

3. How to find GCD of 521, 763, 78, 390 on a calculator?

You can find the GCD of 521, 763, 78, 390 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.