GCD of 989, 307, 645, 721 Calculator
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Online GCD Calculator is useful to find the GCD of 989, 307, 645, 721 quickly. Get the easiest ways to solve the greatest common divisor of 989, 307, 645, 721 i.e 1 in different methods as follows.
Given Input numbers are 989, 307, 645, 721
In the factoring method, we have to find the divisors of all numbers
Divisors of 989 :
The positive integer divisors of 989 that completely divides 989 are.
1, 23, 43, 989
Divisors of 307 :
The positive integer divisors of 307 that completely divides 307 are.
1, 307
Divisors of 645 :
The positive integer divisors of 645 that completely divides 645 are.
1, 3, 5, 15, 43, 129, 215, 645
Divisors of 721 :
The positive integer divisors of 721 that completely divides 721 are.
1, 7, 103, 721
GCD of numbers is the greatest common divisor
So, the GCD (989, 307, 645, 721) = 1.
Given numbers are 989, 307, 645, 721
The list of prime factors of all numbers are
Prime factors of 989 are 23 x 43
Prime factors of 307 are 307
Prime factors of 645 are 3 x 5 x 43
Prime factors of 721 are 7 x 103
The above numbers do not have any common prime factor. So GCD is 1
Steps to Calculate GCD of 989, 307, 645, 721 using LCM Formula
Given numbers are 989, 307, 645, 721
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(989, 307) = 303623
GCD(989, 307) = ( 989 x 307 ) / 303623
= 989 / 307
= 989
Step2:
LCM(1, 645) = 645
GCD(1, 645) = ( 1 x 645 ) / 645
= 1 / 645
= 1
Step3:
LCM(1, 721) = 721
GCD(1, 721) = ( 1 x 721 ) / 721
= 1 / 721
= 1
So, Greatest Common Divisor of 989, 307, 645, 721 is 1
GCD of Numbers Calculation Examples
Here are some samples of GCD of Numbers calculations.
Greatest Common Divisor of 989, 307, 645, 721
Given numbers are 989, 307, 645, 721
The greatest common divisor of numbers 989, 307, 645, 721 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 989, 307, 645, 721 is 1.
FAQs on GCD of 989, 307, 645, 721 Calculator
1. What is the GCD of 989, 307, 645, 721?
GCD of given numbers 989, 307, 645, 721 is 1
2. How to calculate the greatest common divisor of 989, 307, 645, 721?
We can find the highest common divisor of 989, 307, 645, 721 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 989, 307, 645, 721 i.e 1.
3. How can I use the GCD of 989, 307, 645, 721Calculator?
Out the numbers 989, 307, 645, 721 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.