GCD of 391, 321, 54, 428 Calculator
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Online GCD Calculator is useful to find the GCD of 391, 321, 54, 428 quickly. Get the easiest ways to solve the greatest common divisor of 391, 321, 54, 428 i.e 1 in different methods as follows.
Given Input numbers are 391, 321, 54, 428
In the factoring method, we have to find the divisors of all numbers
Divisors of 391 :
The positive integer divisors of 391 that completely divides 391 are.
1, 17, 23, 391
Divisors of 321 :
The positive integer divisors of 321 that completely divides 321 are.
1, 3, 107, 321
Divisors of 54 :
The positive integer divisors of 54 that completely divides 54 are.
1, 2, 3, 6, 9, 18, 27, 54
Divisors of 428 :
The positive integer divisors of 428 that completely divides 428 are.
1, 2, 4, 107, 214, 428
GCD of numbers is the greatest common divisor
So, the GCD (391, 321, 54, 428) = 1.
Given numbers are 391, 321, 54, 428
The list of prime factors of all numbers are
Prime factors of 391 are 17 x 23
Prime factors of 321 are 3 x 107
Prime factors of 54 are 2 x 3 x 3 x 3
Prime factors of 428 are 2 x 2 x 107
The above numbers do not have any common prime factor. So GCD is 1
Steps to Calculate GCD of 391, 321, 54, 428 using LCM Formula
Given numbers are 391, 321, 54, 428
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(391, 321) = 125511
GCD(391, 321) = ( 391 x 321 ) / 125511
= 391 / 321
= 391
Step2:
LCM(1, 54) = 54
GCD(1, 54) = ( 1 x 54 ) / 54
= 1 / 54
= 1
Step3:
LCM(1, 428) = 428
GCD(1, 428) = ( 1 x 428 ) / 428
= 1 / 428
= 1
So, Greatest Common Divisor of 391, 321, 54, 428 is 1
GCD of Numbers Calculation Examples
Here are some samples of GCD of Numbers calculations.
Greatest Common Divisor of 391, 321, 54, 428
Given numbers are 391, 321, 54, 428
The greatest common divisor of numbers 391, 321, 54, 428 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 391, 321, 54, 428 is 1.
FAQs on GCD of 391, 321, 54, 428 Calculator
1. What is the GCD of 391, 321, 54, 428?
GCD of given numbers 391, 321, 54, 428 is 1
2. How to calculate the greatest common divisor of 391, 321, 54, 428?
We can find the highest common divisor of 391, 321, 54, 428 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 391, 321, 54, 428 i.e 1.
3. How can I use the GCD of 391, 321, 54, 428Calculator?
Out the numbers 391, 321, 54, 428 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.