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GCD of 755, 438, 620 Calculator

Created By : Veerendra
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023


Online GCD Calculator is useful to find the GCD of 755, 438, 620 quickly. Get the easiest ways to solve the greatest common divisor of 755, 438, 620 i.e 1 in different methods as follows.

GCD of

How to Find GCD of Numbers 755, 438, 620 with Factoring?

Given Input numbers are 755, 438, 620

In the factoring method, we have to find the divisors of all numbers

Divisors of 755 :

The positive integer divisors of 755 that completely divides 755 are.

1, 5, 151, 755

Divisors of 438 :

The positive integer divisors of 438 that completely divides 438 are.

1, 2, 3, 6, 73, 146, 219, 438

Divisors of 620 :

The positive integer divisors of 620 that completely divides 620 are.

1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620


GCD of numbers is the greatest common divisor

So, the GCD (755, 438, 620) = 1.

Find GCD of 755, 438, 620 using Prime Factorization

Given numbers are 755, 438, 620

The list of prime factors of all numbers are

Prime factors of 755 are 5 x 151

Prime factors of 438 are 2 x 3 x 73

Prime factors of 620 are 2 x 2 x 5 x 31

The above numbers do not have any common prime factor. So GCD is 1

Steps to Calculate GCD of 755, 438, 620 using LCM Formula

Given numbers are 755, 438, 620

GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)

Apply this formula for all numbers.

Step1:

LCM(755, 438) = 330690

GCD(755, 438) = ( 755 x 438 ) / 330690

= 755 / 438

= 755


Step2:

LCM(1, 620) = 620

GCD(1, 620) = ( 1 x 620 ) / 620

= 1 / 620

= 1


So, Greatest Common Divisor of 755, 438, 620 is 1

GCD of Numbers Calculation Examples

Greatest Common Divisor of 755, 438, 620

Given numbers are 755, 438, 620
The greatest common divisor of numbers 755, 438, 620 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 755, 438, 620 is 1.

FAQs on GCD of 755, 438, 620 Calculator

1. What is the GCD of 755, 438, 620?

GCD of given numbers 755, 438, 620 is 1


2. How to calculate the greatest common divisor of 755, 438, 620?

We can find the highest common divisor of 755, 438, 620 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 755, 438, 620 i.e 1.


3. How can I use the GCD of 755, 438, 620Calculator?

Out the numbers 755, 438, 620 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.