GCD of 158, 440, 690, 191 Calculator

Given Input numbers are 158, 440, 690, 191

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

Divisors of 158

List of positive integer divisors of 158 that divides 158 without a remainder.

1, 2, 79, 158

Divisors of 440

List of positive integer divisors of 440 that divides 440 without a remainder.

1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440

Divisors of 690

List of positive integer divisors of 690 that divides 690 without a remainder.

1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690

Divisors of 191

List of positive integer divisors of 191 that divides 191 without a remainder.

1, 191

Greatest Common Divisior

We found the divisors of 158, 440, 690, 191 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 158, 440, 690, 191 is 1.

Therefore, GCD of numbers 158, 440, 690, 191 is 1

Given Input Data is 158, 440, 690, 191

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

Prime Factorization of 158 is 2 x 79

Prime Factorization of 440 is 2 x 2 x 2 x 5 x 11

Prime Factorization of 690 is 2 x 3 x 5 x 23

Prime Factorization of 191 is 191

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(158, 440) = 34760

GCD(158, 440) = ( 158 x 440 ) / 34760

GCD(158, 440) = 69520 / 34760

GCD(158, 440) = 2

Step2:

Here we consider the GCD from the above i.e. 2 as first number and the next as 690

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

LCM(2, 690) = 690

GCD(2, 690) = ( 2 x 690 ) / 690

GCD(2, 690) = 1380 / 690

GCD(2, 690) = 2

Step3:

Here we consider the GCD from the above i.e. 2 as first number and the next as 191

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

LCM(2, 191) = 382

GCD(2, 191) = ( 2 x 191 ) / 382

GCD(2, 191) = 382 / 382

GCD(2, 191) = 1

GCD of 158, 440, 690, 191 is 1

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1. What is the GCD of 158, 440, 690, 191?

GCD of 158, 440, 690, 191 is 1

2. Where do I get the detailed procedure to find GCD of 158, 440, 690, 191?

You can find a detailed procedure to find GCD of 158, 440, 690, 191 on our page.

3. How to find GCD of 158, 440, 690, 191 on a calculator?

You can find the GCD of 158, 440, 690, 191 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.