GCD of 645, 372, 15, 536 Calculator

Given Input numbers are 645, 372, 15, 536

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 372

List of positive integer divisors of 372 that divides 372 without a remainder.

1, 2, 3, 4, 6, 12, 31, 62, 93, 124, 186, 372

Divisors of 15

List of positive integer divisors of 15 that divides 15 without a remainder.

1, 3, 5, 15

Divisors of 536

List of positive integer divisors of 536 that divides 536 without a remainder.

1, 2, 4, 8, 67, 134, 268, 536

Greatest Common Divisior

We found the divisors of 645, 372, 15, 536 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 645, 372, 15, 536 is 1.

Therefore, GCD of numbers 645, 372, 15, 536 is 1

Given Input Data is 645, 372, 15, 536

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 372 is 2 x 2 x 3 x 31

Prime Factorization of 15 is 3 x 5

Prime Factorization of 536 is 2 x 2 x 2 x 67

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, 372) = 79980

GCD(645, 372) = ( 645 x 372 ) / 79980

GCD(645, 372) = 239940 / 79980

GCD(645, 372) = 3

Step2:

Here we consider the GCD from the above i.e. 3 as first number and the next as 15

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

LCM(3, 15) = 15

GCD(3, 15) = ( 3 x 15 ) / 15

GCD(3, 15) = 45 / 15

GCD(3, 15) = 3

Step3:

Here we consider the GCD from the above i.e. 3 as first number and the next as 536

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

LCM(3, 536) = 1608

GCD(3, 536) = ( 3 x 536 ) / 1608

GCD(3, 536) = 1608 / 1608

GCD(3, 536) = 1

GCD of 645, 372, 15, 536 is 1

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• GCD of 789, 451, 43, 817
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1. What is the GCD of 645, 372, 15, 536?

GCD of 645, 372, 15, 536 is 1

2. Where do I get the detailed procedure to find GCD of 645, 372, 15, 536?

You can find a detailed procedure to find GCD of 645, 372, 15, 536 on our page.

3. How to find GCD of 645, 372, 15, 536 on a calculator?

You can find the GCD of 645, 372, 15, 536 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.