GCD of 645, 979, 252, 871 Calculator

Given Input numbers are 645, 979, 252, 871

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 979

List of positive integer divisors of 979 that divides 979 without a remainder.

1, 11, 89, 979

Divisors of 252

List of positive integer divisors of 252 that divides 252 without a remainder.

1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 252

Divisors of 871

List of positive integer divisors of 871 that divides 871 without a remainder.

1, 13, 67, 871

Greatest Common Divisior

We found the divisors of 645, 979, 252, 871 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 645, 979, 252, 871 is 1.

Therefore, GCD of numbers 645, 979, 252, 871 is 1

Given Input Data is 645, 979, 252, 871

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 979 is 11 x 89

Prime Factorization of 252 is 2 x 2 x 3 x 3 x 7

Prime Factorization of 871 is 13 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, 979) = 631455

GCD(645, 979) = ( 645 x 979 ) / 631455

GCD(645, 979) = 631455 / 631455

GCD(645, 979) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 252

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

LCM(1, 252) = 252

GCD(1, 252) = ( 1 x 252 ) / 252

GCD(1, 252) = 252 / 252

GCD(1, 252) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 871

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

LCM(1, 871) = 871

GCD(1, 871) = ( 1 x 871 ) / 871

GCD(1, 871) = 871 / 871

GCD(1, 871) = 1

GCD of 645, 979, 252, 871 is 1

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• GCD of 425, 699, 786, 621

1. What is the GCD of 645, 979, 252, 871?

GCD of 645, 979, 252, 871 is 1

2. Where do I get the detailed procedure to find GCD of 645, 979, 252, 871?

You can find a detailed procedure to find GCD of 645, 979, 252, 871 on our page.

3. How to find GCD of 645, 979, 252, 871 on a calculator?

You can find the GCD of 645, 979, 252, 871 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.