GCD of 143, 640, 664, 245 Calculator

Given Input numbers are 143, 640, 664, 245

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

Divisors of 143

List of positive integer divisors of 143 that divides 143 without a remainder.

1, 11, 13, 143

Divisors of 640

List of positive integer divisors of 640 that divides 640 without a remainder.

1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640

Divisors of 664

List of positive integer divisors of 664 that divides 664 without a remainder.

1, 2, 4, 8, 83, 166, 332, 664

Divisors of 245

List of positive integer divisors of 245 that divides 245 without a remainder.

1, 5, 7, 35, 49, 245

Greatest Common Divisior

We found the divisors of 143, 640, 664, 245 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 143, 640, 664, 245 is 1.

Therefore, GCD of numbers 143, 640, 664, 245 is 1

Given Input Data is 143, 640, 664, 245

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

Prime Factorization of 143 is 11 x 13

Prime Factorization of 640 is 2 x 2 x 2 x 2 x 2 x 2 x 2 x 5

Prime Factorization of 664 is 2 x 2 x 2 x 83

Prime Factorization of 245 is 5 x 7 x 7

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(143, 640) = 91520

GCD(143, 640) = ( 143 x 640 ) / 91520

GCD(143, 640) = 91520 / 91520

GCD(143, 640) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 664

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

LCM(1, 664) = 664

GCD(1, 664) = ( 1 x 664 ) / 664

GCD(1, 664) = 664 / 664

GCD(1, 664) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 245

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

LCM(1, 245) = 245

GCD(1, 245) = ( 1 x 245 ) / 245

GCD(1, 245) = 245 / 245

GCD(1, 245) = 1

GCD of 143, 640, 664, 245 is 1

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1. What is the GCD of 143, 640, 664, 245?

GCD of 143, 640, 664, 245 is 1

2. Where do I get the detailed procedure to find GCD of 143, 640, 664, 245?

You can find a detailed procedure to find GCD of 143, 640, 664, 245 on our page.

3. How to find GCD of 143, 640, 664, 245 on a calculator?

You can find the GCD of 143, 640, 664, 245 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.