GCD of 645, 763, 40, 380 Calculator

Given Input numbers are 645, 763, 40, 380

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

Divisors of 645

List of positive integer divisors of 645 that divides 645 without a remainder.

1, 3, 5, 15, 43, 129, 215, 645

Divisors of 763

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

1, 7, 109, 763

Divisors of 40

List of positive integer divisors of 40 that divides 40 without a remainder.

1, 2, 4, 5, 8, 10, 20, 40

Divisors of 380

List of positive integer divisors of 380 that divides 380 without a remainder.

1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380

Greatest Common Divisior

We found the divisors of 645, 763, 40, 380 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 645, 763, 40, 380 is 1.

Therefore, GCD of numbers 645, 763, 40, 380 is 1

Given Input Data is 645, 763, 40, 380

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

Prime Factorization of 645 is 3 x 5 x 43

Prime Factorization of 763 is 7 x 109

Prime Factorization of 40 is 2 x 2 x 2 x 5

Prime Factorization of 380 is 2 x 2 x 5 x 19

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(645, 763) = 492135

GCD(645, 763) = ( 645 x 763 ) / 492135

GCD(645, 763) = 492135 / 492135

GCD(645, 763) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 40

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

LCM(1, 40) = 40

GCD(1, 40) = ( 1 x 40 ) / 40

GCD(1, 40) = 40 / 40

GCD(1, 40) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 380

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

LCM(1, 380) = 380

GCD(1, 380) = ( 1 x 380 ) / 380

GCD(1, 380) = 380 / 380

GCD(1, 380) = 1

GCD of 645, 763, 40, 380 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 787, 680, 40, 527
• GCD of 780, 489, 31, 584
• GCD of 571, 573, 38, 797
• GCD of 901, 727, 32, 759
• GCD of 792, 237, 17, 154

1. What is the GCD of 645, 763, 40, 380?

GCD of 645, 763, 40, 380 is 1

2. Where do I get the detailed procedure to find GCD of 645, 763, 40, 380?

You can find a detailed procedure to find GCD of 645, 763, 40, 380 on our page.

3. How to find GCD of 645, 763, 40, 380 on a calculator?

You can find the GCD of 645, 763, 40, 380 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.