GCD of 645, 982, 20, 275 Calculator

Given Input numbers are 645, 982, 20, 275

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 982

List of positive integer divisors of 982 that divides 982 without a remainder.

1, 2, 491, 982

Divisors of 20

List of positive integer divisors of 20 that divides 20 without a remainder.

1, 2, 4, 5, 10, 20

Divisors of 275

List of positive integer divisors of 275 that divides 275 without a remainder.

1, 5, 11, 25, 55, 275

Greatest Common Divisior

We found the divisors of 645, 982, 20, 275 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 645, 982, 20, 275 is 1.

Therefore, GCD of numbers 645, 982, 20, 275 is 1

Given Input Data is 645, 982, 20, 275

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 982 is 2 x 491

Prime Factorization of 20 is 2 x 2 x 5

Prime Factorization of 275 is 5 x 5 x 11

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, 982) = 633390

GCD(645, 982) = ( 645 x 982 ) / 633390

GCD(645, 982) = 633390 / 633390

GCD(645, 982) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 20

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

LCM(1, 20) = 20

GCD(1, 20) = ( 1 x 20 ) / 20

GCD(1, 20) = 20 / 20

GCD(1, 20) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 275

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

LCM(1, 275) = 275

GCD(1, 275) = ( 1 x 275 ) / 275

GCD(1, 275) = 275 / 275

GCD(1, 275) = 1

GCD of 645, 982, 20, 275 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 115, 866, 73, 998
• GCD of 245, 177, 62, 944
• GCD of 423, 774, 12, 522
• GCD of 564, 118, 13, 743
• GCD of 623, 105, 54, 718

1. What is the GCD of 645, 982, 20, 275?

GCD of 645, 982, 20, 275 is 1

2. Where do I get the detailed procedure to find GCD of 645, 982, 20, 275?

You can find a detailed procedure to find GCD of 645, 982, 20, 275 on our page.

3. How to find GCD of 645, 982, 20, 275 on a calculator?

You can find the GCD of 645, 982, 20, 275 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.