GCD of 861, 137, 66, 455 Calculator

Given Input numbers are 861, 137, 66, 455

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

Divisors of 861

List of positive integer divisors of 861 that divides 861 without a remainder.

1, 3, 7, 21, 41, 123, 287, 861

Divisors of 137

List of positive integer divisors of 137 that divides 137 without a remainder.

1, 137

Divisors of 66

List of positive integer divisors of 66 that divides 66 without a remainder.

1, 2, 3, 6, 11, 22, 33, 66

Divisors of 455

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

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

Greatest Common Divisior

We found the divisors of 861, 137, 66, 455 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 861, 137, 66, 455 is 1.

Therefore, GCD of numbers 861, 137, 66, 455 is 1

Given Input Data is 861, 137, 66, 455

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

Prime Factorization of 861 is 3 x 7 x 41

Prime Factorization of 137 is 137

Prime Factorization of 66 is 2 x 3 x 11

Prime Factorization of 455 is 5 x 7 x 13

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(861, 137) = 117957

GCD(861, 137) = ( 861 x 137 ) / 117957

GCD(861, 137) = 117957 / 117957

GCD(861, 137) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 66

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

LCM(1, 66) = 66

GCD(1, 66) = ( 1 x 66 ) / 66

GCD(1, 66) = 66 / 66

GCD(1, 66) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 455

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

LCM(1, 455) = 455

GCD(1, 455) = ( 1 x 455 ) / 455

GCD(1, 455) = 455 / 455

GCD(1, 455) = 1

GCD of 861, 137, 66, 455 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 405, 658, 53, 761
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• GCD of 850, 607, 85, 143

1. What is the GCD of 861, 137, 66, 455?

GCD of 861, 137, 66, 455 is 1

2. Where do I get the detailed procedure to find GCD of 861, 137, 66, 455?

You can find a detailed procedure to find GCD of 861, 137, 66, 455 on our page.

3. How to find GCD of 861, 137, 66, 455 on a calculator?

You can find the GCD of 861, 137, 66, 455 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.