GCD of 247, 697, 42, 490 Calculator

Given Input numbers are 247, 697, 42, 490

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

Divisors of 247

List of positive integer divisors of 247 that divides 247 without a remainder.

1, 13, 19, 247

Divisors of 697

List of positive integer divisors of 697 that divides 697 without a remainder.

1, 17, 41, 697

Divisors of 42

List of positive integer divisors of 42 that divides 42 without a remainder.

1, 2, 3, 6, 7, 14, 21, 42

Divisors of 490

List of positive integer divisors of 490 that divides 490 without a remainder.

1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490

Greatest Common Divisior

We found the divisors of 247, 697, 42, 490 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 247, 697, 42, 490 is 1.

Therefore, GCD of numbers 247, 697, 42, 490 is 1

Given Input Data is 247, 697, 42, 490

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

Prime Factorization of 247 is 13 x 19

Prime Factorization of 697 is 17 x 41

Prime Factorization of 42 is 2 x 3 x 7

Prime Factorization of 490 is 2 x 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(247, 697) = 172159

GCD(247, 697) = ( 247 x 697 ) / 172159

GCD(247, 697) = 172159 / 172159

GCD(247, 697) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 42

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

LCM(1, 42) = 42

GCD(1, 42) = ( 1 x 42 ) / 42

GCD(1, 42) = 42 / 42

GCD(1, 42) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 490

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

LCM(1, 490) = 490

GCD(1, 490) = ( 1 x 490 ) / 490

GCD(1, 490) = 490 / 490

GCD(1, 490) = 1

GCD of 247, 697, 42, 490 is 1

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1. What is the GCD of 247, 697, 42, 490?

GCD of 247, 697, 42, 490 is 1

2. Where do I get the detailed procedure to find GCD of 247, 697, 42, 490?

You can find a detailed procedure to find GCD of 247, 697, 42, 490 on our page.

3. How to find GCD of 247, 697, 42, 490 on a calculator?

You can find the GCD of 247, 697, 42, 490 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.