GCD of 853, 505, 20, 637 Calculator

Given Input numbers are 853, 505, 20, 637

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

Divisors of 853

List of positive integer divisors of 853 that divides 853 without a remainder.

1, 853

Divisors of 505

List of positive integer divisors of 505 that divides 505 without a remainder.

1, 5, 101, 505

Divisors of 20

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

1, 2, 4, 5, 10, 20

Divisors of 637

List of positive integer divisors of 637 that divides 637 without a remainder.

1, 7, 13, 49, 91, 637

Greatest Common Divisior

We found the divisors of 853, 505, 20, 637 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 853, 505, 20, 637 is 1.

Therefore, GCD of numbers 853, 505, 20, 637 is 1

Given Input Data is 853, 505, 20, 637

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

Prime Factorization of 853 is 853

Prime Factorization of 505 is 5 x 101

Prime Factorization of 20 is 2 x 2 x 5

Prime Factorization of 637 is 7 x 7 x 13

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(853, 505) = 430765

GCD(853, 505) = ( 853 x 505 ) / 430765

GCD(853, 505) = 430765 / 430765

GCD(853, 505) = 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 637

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

LCM(1, 637) = 637

GCD(1, 637) = ( 1 x 637 ) / 637

GCD(1, 637) = 637 / 637

GCD(1, 637) = 1

GCD of 853, 505, 20, 637 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 634, 969, 91, 978
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• GCD of 484, 216, 41, 899
• GCD of 653, 119, 44, 381
• GCD of 966, 557, 79, 758

1. What is the GCD of 853, 505, 20, 637?

GCD of 853, 505, 20, 637 is 1

2. Where do I get the detailed procedure to find GCD of 853, 505, 20, 637?

You can find a detailed procedure to find GCD of 853, 505, 20, 637 on our page.

3. How to find GCD of 853, 505, 20, 637 on a calculator?

You can find the GCD of 853, 505, 20, 637 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.