GCD of 820, 145, 68, 619 Calculator

Given Input numbers are 820, 145, 68, 619

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

Divisors of 820

List of positive integer divisors of 820 that divides 820 without a remainder.

1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820

Divisors of 145

List of positive integer divisors of 145 that divides 145 without a remainder.

1, 5, 29, 145

Divisors of 68

List of positive integer divisors of 68 that divides 68 without a remainder.

1, 2, 4, 17, 34, 68

Divisors of 619

List of positive integer divisors of 619 that divides 619 without a remainder.

1, 619

Greatest Common Divisior

We found the divisors of 820, 145, 68, 619 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 820, 145, 68, 619 is 1.

Therefore, GCD of numbers 820, 145, 68, 619 is 1

Given Input Data is 820, 145, 68, 619

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

Prime Factorization of 820 is 2 x 2 x 5 x 41

Prime Factorization of 145 is 5 x 29

Prime Factorization of 68 is 2 x 2 x 17

Prime Factorization of 619 is 619

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(820, 145) = 23780

GCD(820, 145) = ( 820 x 145 ) / 23780

GCD(820, 145) = 118900 / 23780

GCD(820, 145) = 5

Step2:

Here we consider the GCD from the above i.e. 5 as first number and the next as 68

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

LCM(5, 68) = 340

GCD(5, 68) = ( 5 x 68 ) / 340

GCD(5, 68) = 340 / 340

GCD(5, 68) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 619

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

LCM(1, 619) = 619

GCD(1, 619) = ( 1 x 619 ) / 619

GCD(1, 619) = 619 / 619

GCD(1, 619) = 1

GCD of 820, 145, 68, 619 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 903, 211, 67, 666
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• GCD of 744, 659, 84, 131

1. What is the GCD of 820, 145, 68, 619?

GCD of 820, 145, 68, 619 is 1

2. Where do I get the detailed procedure to find GCD of 820, 145, 68, 619?

You can find a detailed procedure to find GCD of 820, 145, 68, 619 on our page.

3. How to find GCD of 820, 145, 68, 619 on a calculator?

You can find the GCD of 820, 145, 68, 619 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.