GCD of 620, 645, 25, 739 Calculator

Given Input numbers are 620, 645, 25, 739

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

Divisors of 620

List of positive integer divisors of 620 that divides 620 without a remainder.

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

Divisors of 645

List of positive integer divisors of 645 that divides 645 without a remainder.

1, 3, 5, 15, 43, 129, 215, 645

Divisors of 25

List of positive integer divisors of 25 that divides 25 without a remainder.

1, 5, 25

Divisors of 739

List of positive integer divisors of 739 that divides 739 without a remainder.

1, 739

Greatest Common Divisior

We found the divisors of 620, 645, 25, 739 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 620, 645, 25, 739 is 1.

Therefore, GCD of numbers 620, 645, 25, 739 is 1

Given Input Data is 620, 645, 25, 739

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

Prime Factorization of 620 is 2 x 2 x 5 x 31

Prime Factorization of 645 is 3 x 5 x 43

Prime Factorization of 25 is 5 x 5

Prime Factorization of 739 is 739

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(620, 645) = 79980

GCD(620, 645) = ( 620 x 645 ) / 79980

GCD(620, 645) = 399900 / 79980

GCD(620, 645) = 5

Step2:

Here we consider the GCD from the above i.e. 5 as first number and the next as 25

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

LCM(5, 25) = 25

GCD(5, 25) = ( 5 x 25 ) / 25

GCD(5, 25) = 125 / 25

GCD(5, 25) = 5

Step3:

Here we consider the GCD from the above i.e. 5 as first number and the next as 739

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

LCM(5, 739) = 3695

GCD(5, 739) = ( 5 x 739 ) / 3695

GCD(5, 739) = 3695 / 3695

GCD(5, 739) = 1

GCD of 620, 645, 25, 739 is 1

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1. What is the GCD of 620, 645, 25, 739?

GCD of 620, 645, 25, 739 is 1

2. Where do I get the detailed procedure to find GCD of 620, 645, 25, 739?

You can find a detailed procedure to find GCD of 620, 645, 25, 739 on our page.

3. How to find GCD of 620, 645, 25, 739 on a calculator?

You can find the GCD of 620, 645, 25, 739 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.