GCD of 665, 548, 91, 138 Calculator

Given Input numbers are 665, 548, 91, 138

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

Divisors of 665

List of positive integer divisors of 665 that divides 665 without a remainder.

1, 5, 7, 19, 35, 95, 133, 665

Divisors of 548

List of positive integer divisors of 548 that divides 548 without a remainder.

1, 2, 4, 137, 274, 548

Divisors of 91

List of positive integer divisors of 91 that divides 91 without a remainder.

1, 7, 13, 91

Divisors of 138

List of positive integer divisors of 138 that divides 138 without a remainder.

1, 2, 3, 6, 23, 46, 69, 138

Greatest Common Divisior

We found the divisors of 665, 548, 91, 138 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 665, 548, 91, 138 is 1.

Therefore, GCD of numbers 665, 548, 91, 138 is 1

Given Input Data is 665, 548, 91, 138

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

Prime Factorization of 665 is 5 x 7 x 19

Prime Factorization of 548 is 2 x 2 x 137

Prime Factorization of 91 is 7 x 13

Prime Factorization of 138 is 2 x 3 x 23

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(665, 548) = 364420

GCD(665, 548) = ( 665 x 548 ) / 364420

GCD(665, 548) = 364420 / 364420

GCD(665, 548) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 91

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

LCM(1, 91) = 91

GCD(1, 91) = ( 1 x 91 ) / 91

GCD(1, 91) = 91 / 91

GCD(1, 91) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 138

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

LCM(1, 138) = 138

GCD(1, 138) = ( 1 x 138 ) / 138

GCD(1, 138) = 138 / 138

GCD(1, 138) = 1

GCD of 665, 548, 91, 138 is 1

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1. What is the GCD of 665, 548, 91, 138?

GCD of 665, 548, 91, 138 is 1

2. Where do I get the detailed procedure to find GCD of 665, 548, 91, 138?

You can find a detailed procedure to find GCD of 665, 548, 91, 138 on our page.

3. How to find GCD of 665, 548, 91, 138 on a calculator?

You can find the GCD of 665, 548, 91, 138 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.