GCD of 83, 20, 18, 70 Calculator

Given Input numbers are 83, 20, 18, 70

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

Divisors of 83

List of positive integer divisors of 83 that divides 83 without a remainder.

1, 83

Divisors of 20

List of positive integer divisors of 20 that divides 20 without a remainder.

1, 2, 4, 5, 10, 20

Divisors of 18

List of positive integer divisors of 18 that divides 18 without a remainder.

1, 2, 3, 6, 9, 18

Divisors of 70

List of positive integer divisors of 70 that divides 70 without a remainder.

1, 2, 5, 7, 10, 14, 35, 70

Greatest Common Divisior

We found the divisors of 83, 20, 18, 70 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 83, 20, 18, 70 is 1.

Therefore, GCD of numbers 83, 20, 18, 70 is 1

Given Input Data is 83, 20, 18, 70

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

Prime Factorization of 83 is 83

Prime Factorization of 20 is 2 x 2 x 5

Prime Factorization of 18 is 2 x 3 x 3

Prime Factorization of 70 is 2 x 5 x 7

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(83, 20) = 1660

GCD(83, 20) = ( 83 x 20 ) / 1660

GCD(83, 20) = 1660 / 1660

GCD(83, 20) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 18

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

LCM(1, 18) = 18

GCD(1, 18) = ( 1 x 18 ) / 18

GCD(1, 18) = 18 / 18

GCD(1, 18) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 70

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

LCM(1, 70) = 70

GCD(1, 70) = ( 1 x 70 ) / 70

GCD(1, 70) = 70 / 70

GCD(1, 70) = 1

GCD of 83, 20, 18, 70 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 68, 31, 91, 66
• GCD of 94, 74, 20, 33
• GCD of 19, 67, 25, 87
• GCD of 47, 30, 99, 88
• GCD of 41, 75, 95, 15

1. What is the GCD of 83, 20, 18, 70?

GCD of 83, 20, 18, 70 is 1

2. Where do I get the detailed procedure to find GCD of 83, 20, 18, 70?

You can find a detailed procedure to find GCD of 83, 20, 18, 70 on our page.

3. How to find GCD of 83, 20, 18, 70 on a calculator?

You can find the GCD of 83, 20, 18, 70 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.