GCD of 721, 840, 90 Calculator
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Online GCD Calculator is useful to find the GCD of 721, 840, 90 quickly. Get the easiest ways to solve the greatest common divisor of 721, 840, 90 i.e 1 in different methods as follows.
Given Input numbers are 721, 840, 90
In the factoring method, we have to find the divisors of all numbers
Divisors of 721 :
The positive integer divisors of 721 that completely divides 721 are.
1, 7, 103, 721
Divisors of 840 :
The positive integer divisors of 840 that completely divides 840 are.
1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840
Divisors of 90 :
The positive integer divisors of 90 that completely divides 90 are.
1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90
GCD of numbers is the greatest common divisor
So, the GCD (721, 840, 90) = 1.
Given numbers are 721, 840, 90
The list of prime factors of all numbers are
Prime factors of 721 are 7 x 103
Prime factors of 840 are 2 x 2 x 2 x 3 x 5 x 7
Prime factors of 90 are 2 x 3 x 3 x 5
The above numbers do not have any common prime factor. So GCD is 1
Steps to Calculate GCD of 721, 840, 90 using LCM Formula
Given numbers are 721, 840, 90
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(721, 840) = 86520
GCD(721, 840) = ( 721 x 840 ) / 86520
= 721 / 840
= 721
Step2:
LCM(7, 90) = 630
GCD(7, 90) = ( 7 x 90 ) / 630
= 7 / 90
= 7
So, Greatest Common Divisor of 721, 840, 90 is 1
GCD of Numbers Calculation Examples
Here are some samples of GCD of Numbers calculations.
Greatest Common Divisor of 721, 840, 90
Given numbers are 721, 840, 90
The greatest common divisor of numbers 721, 840, 90 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 721, 840, 90 is 1.
FAQs on GCD of 721, 840, 90 Calculator
1. What is the GCD of 721, 840, 90?
GCD of given numbers 721, 840, 90 is 1
2. How to calculate the greatest common divisor of 721, 840, 90?
We can find the highest common divisor of 721, 840, 90 easily using the prime factorization method. Just list the prime factors of all numbers and pick the highest common factor which is the GCD of 721, 840, 90 i.e 1.
3. How can I use the GCD of 721, 840, 90Calculator?
Out the numbers 721, 840, 90 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.