GCD of 721, 151, 643, 816 Calculator

Given Input numbers are 721, 151, 643, 816

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

Divisors of 721

List of positive integer divisors of 721 that divides 721 without a remainder.

1, 7, 103, 721

Divisors of 151

List of positive integer divisors of 151 that divides 151 without a remainder.

1, 151

Divisors of 643

List of positive integer divisors of 643 that divides 643 without a remainder.

1, 643

Divisors of 816

List of positive integer divisors of 816 that divides 816 without a remainder.

1, 2, 3, 4, 6, 8, 12, 16, 17, 24, 34, 48, 51, 68, 102, 136, 204, 272, 408, 816

Greatest Common Divisior

We found the divisors of 721, 151, 643, 816 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 721, 151, 643, 816 is 1.

Therefore, GCD of numbers 721, 151, 643, 816 is 1

Given Input Data is 721, 151, 643, 816

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

Prime Factorization of 721 is 7 x 103

Prime Factorization of 151 is 151

Prime Factorization of 643 is 643

Prime Factorization of 816 is 2 x 2 x 2 x 2 x 3 x 17

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(721, 151) = 108871

GCD(721, 151) = ( 721 x 151 ) / 108871

GCD(721, 151) = 108871 / 108871

GCD(721, 151) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 643

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

LCM(1, 643) = 643

GCD(1, 643) = ( 1 x 643 ) / 643

GCD(1, 643) = 643 / 643

GCD(1, 643) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 816

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

LCM(1, 816) = 816

GCD(1, 816) = ( 1 x 816 ) / 816

GCD(1, 816) = 816 / 816

GCD(1, 816) = 1

GCD of 721, 151, 643, 816 is 1

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1. What is the GCD of 721, 151, 643, 816?

GCD of 721, 151, 643, 816 is 1

2. Where do I get the detailed procedure to find GCD of 721, 151, 643, 816?

You can find a detailed procedure to find GCD of 721, 151, 643, 816 on our page.

3. How to find GCD of 721, 151, 643, 816 on a calculator?

You can find the GCD of 721, 151, 643, 816 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.