GCD of 86, 21, 55 Calculator

Given Input numbers are 86, 21, 55

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

Divisors of 86

List of positive integer divisors of 86 that divides 86 without a remainder.

1, 2, 43, 86

Divisors of 21

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

1, 3, 7, 21

Divisors of 55

List of positive integer divisors of 55 that divides 55 without a remainder.

1, 5, 11, 55

Greatest Common Divisior

We found the divisors of 86, 21, 55 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 86, 21, 55 is 1.

Therefore, GCD of numbers 86, 21, 55 is 1

Given Input Data is 86, 21, 55

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

Prime Factorization of 86 is 2 x 43

Prime Factorization of 21 is 3 x 7

Prime Factorization of 55 is 5 x 11

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(86, 21) = 1806

GCD(86, 21) = ( 86 x 21 ) / 1806

GCD(86, 21) = 1806 / 1806

GCD(86, 21) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 55

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

LCM(1, 55) = 55

GCD(1, 55) = ( 1 x 55 ) / 55

GCD(1, 55) = 55 / 55

GCD(1, 55) = 1

GCD of 86, 21, 55 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 43, 64, 72
• GCD of 42, 45, 88
• GCD of 14, 87, 74
• GCD of 77, 33, 46
• GCD of 12, 16, 21

1. What is the GCD of 86, 21, 55?

GCD of 86, 21, 55 is 1

2. Where do I get the detailed procedure to find GCD of 86, 21, 55?

You can find a detailed procedure to find GCD of 86, 21, 55 on our page.

3. How to find GCD of 86, 21, 55 on a calculator?

You can find the GCD of 86, 21, 55 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.