GCD of 425, 390, 42, 290 Calculator

Given Input numbers are 425, 390, 42, 290

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

Divisors of 425

List of positive integer divisors of 425 that divides 425 without a remainder.

1, 5, 17, 25, 85, 425

Divisors of 390

List of positive integer divisors of 390 that divides 390 without a remainder.

1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390

Divisors of 42

List of positive integer divisors of 42 that divides 42 without a remainder.

1, 2, 3, 6, 7, 14, 21, 42

Divisors of 290

List of positive integer divisors of 290 that divides 290 without a remainder.

1, 2, 5, 10, 29, 58, 145, 290

Greatest Common Divisior

We found the divisors of 425, 390, 42, 290 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 425, 390, 42, 290 is 1.

Therefore, GCD of numbers 425, 390, 42, 290 is 1

Given Input Data is 425, 390, 42, 290

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

Prime Factorization of 425 is 5 x 5 x 17

Prime Factorization of 390 is 2 x 3 x 5 x 13

Prime Factorization of 42 is 2 x 3 x 7

Prime Factorization of 290 is 2 x 5 x 29

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(425, 390) = 33150

GCD(425, 390) = ( 425 x 390 ) / 33150

GCD(425, 390) = 165750 / 33150

GCD(425, 390) = 5

Step2:

Here we consider the GCD from the above i.e. 5 as first number and the next as 42

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

LCM(5, 42) = 210

GCD(5, 42) = ( 5 x 42 ) / 210

GCD(5, 42) = 210 / 210

GCD(5, 42) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 290

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

LCM(1, 290) = 290

GCD(1, 290) = ( 1 x 290 ) / 290

GCD(1, 290) = 290 / 290

GCD(1, 290) = 1

GCD of 425, 390, 42, 290 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 564, 587, 29, 904
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• GCD of 842, 982, 59, 566
• GCD of 244, 414, 13, 570
• GCD of 362, 156, 69, 382

1. What is the GCD of 425, 390, 42, 290?

GCD of 425, 390, 42, 290 is 1

2. Where do I get the detailed procedure to find GCD of 425, 390, 42, 290?

You can find a detailed procedure to find GCD of 425, 390, 42, 290 on our page.

3. How to find GCD of 425, 390, 42, 290 on a calculator?

You can find the GCD of 425, 390, 42, 290 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.