GCD of 638, 407, 70, 650 Calculator

Given Input numbers are 638, 407, 70, 650

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

Divisors of 638

List of positive integer divisors of 638 that divides 638 without a remainder.

1, 2, 11, 22, 29, 58, 319, 638

Divisors of 407

List of positive integer divisors of 407 that divides 407 without a remainder.

1, 11, 37, 407

Divisors of 70

List of positive integer divisors of 70 that divides 70 without a remainder.

1, 2, 5, 7, 10, 14, 35, 70

Divisors of 650

List of positive integer divisors of 650 that divides 650 without a remainder.

1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 325, 650

Greatest Common Divisior

We found the divisors of 638, 407, 70, 650 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 638, 407, 70, 650 is 1.

Therefore, GCD of numbers 638, 407, 70, 650 is 1

Given Input Data is 638, 407, 70, 650

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

Prime Factorization of 638 is 2 x 11 x 29

Prime Factorization of 407 is 11 x 37

Prime Factorization of 70 is 2 x 5 x 7

Prime Factorization of 650 is 2 x 5 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(638, 407) = 23606

GCD(638, 407) = ( 638 x 407 ) / 23606

GCD(638, 407) = 259666 / 23606

GCD(638, 407) = 11

Step2:

Here we consider the GCD from the above i.e. 11 as first number and the next as 70

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

LCM(11, 70) = 770

GCD(11, 70) = ( 11 x 70 ) / 770

GCD(11, 70) = 770 / 770

GCD(11, 70) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 650

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

LCM(1, 650) = 650

GCD(1, 650) = ( 1 x 650 ) / 650

GCD(1, 650) = 650 / 650

GCD(1, 650) = 1

GCD of 638, 407, 70, 650 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 809, 920, 32, 504
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1. What is the GCD of 638, 407, 70, 650?

GCD of 638, 407, 70, 650 is 1

2. Where do I get the detailed procedure to find GCD of 638, 407, 70, 650?

You can find a detailed procedure to find GCD of 638, 407, 70, 650 on our page.

3. How to find GCD of 638, 407, 70, 650 on a calculator?

You can find the GCD of 638, 407, 70, 650 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.