GCD of 980, 128, 455, 170 Calculator

Given Input numbers are 980, 128, 455, 170

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

Divisors of 980

List of positive integer divisors of 980 that divides 980 without a remainder.

1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980

Divisors of 128

List of positive integer divisors of 128 that divides 128 without a remainder.

1, 2, 4, 8, 16, 32, 64, 128

Divisors of 455

List of positive integer divisors of 455 that divides 455 without a remainder.

1, 5, 7, 13, 35, 65, 91, 455

Divisors of 170

List of positive integer divisors of 170 that divides 170 without a remainder.

1, 2, 5, 10, 17, 34, 85, 170

Greatest Common Divisior

We found the divisors of 980, 128, 455, 170 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 980, 128, 455, 170 is 1.

Therefore, GCD of numbers 980, 128, 455, 170 is 1

Given Input Data is 980, 128, 455, 170

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

Prime Factorization of 980 is 2 x 2 x 5 x 7 x 7

Prime Factorization of 128 is 2 x 2 x 2 x 2 x 2 x 2 x 2

Prime Factorization of 455 is 5 x 7 x 13

Prime Factorization of 170 is 2 x 5 x 17

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(980, 128) = 31360

GCD(980, 128) = ( 980 x 128 ) / 31360

GCD(980, 128) = 125440 / 31360

GCD(980, 128) = 4

Step2:

Here we consider the GCD from the above i.e. 4 as first number and the next as 455

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

LCM(4, 455) = 1820

GCD(4, 455) = ( 4 x 455 ) / 1820

GCD(4, 455) = 1820 / 1820

GCD(4, 455) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 170

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

LCM(1, 170) = 170

GCD(1, 170) = ( 1 x 170 ) / 170

GCD(1, 170) = 170 / 170

GCD(1, 170) = 1

GCD of 980, 128, 455, 170 is 1

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• GCD of 989, 297, 826, 230
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1. What is the GCD of 980, 128, 455, 170?

GCD of 980, 128, 455, 170 is 1

2. Where do I get the detailed procedure to find GCD of 980, 128, 455, 170?

You can find a detailed procedure to find GCD of 980, 128, 455, 170 on our page.

3. How to find GCD of 980, 128, 455, 170 on a calculator?

You can find the GCD of 980, 128, 455, 170 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.