GCD of 651, 305, 21, 166 Calculator

Given Input numbers are 651, 305, 21, 166

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

Divisors of 651

List of positive integer divisors of 651 that divides 651 without a remainder.

1, 3, 7, 21, 31, 93, 217, 651

Divisors of 305

List of positive integer divisors of 305 that divides 305 without a remainder.

1, 5, 61, 305

Divisors of 21

List of positive integer divisors of 21 that divides 21 without a remainder.

1, 3, 7, 21

Divisors of 166

List of positive integer divisors of 166 that divides 166 without a remainder.

1, 2, 83, 166

Greatest Common Divisior

We found the divisors of 651, 305, 21, 166 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 651, 305, 21, 166 is 1.

Therefore, GCD of numbers 651, 305, 21, 166 is 1

Given Input Data is 651, 305, 21, 166

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

Prime Factorization of 651 is 3 x 7 x 31

Prime Factorization of 305 is 5 x 61

Prime Factorization of 21 is 3 x 7

Prime Factorization of 166 is 2 x 83

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(651, 305) = 198555

GCD(651, 305) = ( 651 x 305 ) / 198555

GCD(651, 305) = 198555 / 198555

GCD(651, 305) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 21

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

LCM(1, 21) = 21

GCD(1, 21) = ( 1 x 21 ) / 21

GCD(1, 21) = 21 / 21

GCD(1, 21) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 166

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

LCM(1, 166) = 166

GCD(1, 166) = ( 1 x 166 ) / 166

GCD(1, 166) = 166 / 166

GCD(1, 166) = 1

GCD of 651, 305, 21, 166 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 474, 925, 52, 449
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• GCD of 482, 735, 11, 566

1. What is the GCD of 651, 305, 21, 166?

GCD of 651, 305, 21, 166 is 1

2. Where do I get the detailed procedure to find GCD of 651, 305, 21, 166?

You can find a detailed procedure to find GCD of 651, 305, 21, 166 on our page.

3. How to find GCD of 651, 305, 21, 166 on a calculator?

You can find the GCD of 651, 305, 21, 166 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.