GCD of 490, 668, 655, 915 Calculator

Given Input numbers are 490, 668, 655, 915

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

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

Divisors of 668

List of positive integer divisors of 668 that divides 668 without a remainder.

1, 2, 4, 167, 334, 668

Divisors of 655

List of positive integer divisors of 655 that divides 655 without a remainder.

1, 5, 131, 655

Divisors of 915

List of positive integer divisors of 915 that divides 915 without a remainder.

1, 3, 5, 15, 61, 183, 305, 915

Greatest Common Divisior

We found the divisors of 490, 668, 655, 915 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 490, 668, 655, 915 is 1.

Therefore, GCD of numbers 490, 668, 655, 915 is 1

Given Input Data is 490, 668, 655, 915

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

Prime Factorization of 490 is 2 x 5 x 7 x 7

Prime Factorization of 668 is 2 x 2 x 167

Prime Factorization of 655 is 5 x 131

Prime Factorization of 915 is 3 x 5 x 61

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(490, 668) = 163660

GCD(490, 668) = ( 490 x 668 ) / 163660

GCD(490, 668) = 327320 / 163660

GCD(490, 668) = 2

Step2:

Here we consider the GCD from the above i.e. 2 as first number and the next as 655

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

LCM(2, 655) = 1310

GCD(2, 655) = ( 2 x 655 ) / 1310

GCD(2, 655) = 1310 / 1310

GCD(2, 655) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 915

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

LCM(1, 915) = 915

GCD(1, 915) = ( 1 x 915 ) / 915

GCD(1, 915) = 915 / 915

GCD(1, 915) = 1

GCD of 490, 668, 655, 915 is 1

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1. What is the GCD of 490, 668, 655, 915?

GCD of 490, 668, 655, 915 is 1

2. Where do I get the detailed procedure to find GCD of 490, 668, 655, 915?

You can find a detailed procedure to find GCD of 490, 668, 655, 915 on our page.

3. How to find GCD of 490, 668, 655, 915 on a calculator?

You can find the GCD of 490, 668, 655, 915 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.