GCD of 638, 427, 55, 429 Calculator

Given Input numbers are 638, 427, 55, 429

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

Divisors of 638

List of positive integer divisors of 638 that divides 638 without a remainder.

1, 2, 11, 22, 29, 58, 319, 638

Divisors of 427

List of positive integer divisors of 427 that divides 427 without a remainder.

1, 7, 61, 427

Divisors of 55

List of positive integer divisors of 55 that divides 55 without a remainder.

1, 5, 11, 55

Divisors of 429

List of positive integer divisors of 429 that divides 429 without a remainder.

1, 3, 11, 13, 33, 39, 143, 429

Greatest Common Divisior

We found the divisors of 638, 427, 55, 429 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 638, 427, 55, 429 is 1.

Therefore, GCD of numbers 638, 427, 55, 429 is 1

Given Input Data is 638, 427, 55, 429

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

Prime Factorization of 638 is 2 x 11 x 29

Prime Factorization of 427 is 7 x 61

Prime Factorization of 55 is 5 x 11

Prime Factorization of 429 is 3 x 11 x 13

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(638, 427) = 272426

GCD(638, 427) = ( 638 x 427 ) / 272426

GCD(638, 427) = 272426 / 272426

GCD(638, 427) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 55

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

LCM(1, 55) = 55

GCD(1, 55) = ( 1 x 55 ) / 55

GCD(1, 55) = 55 / 55

GCD(1, 55) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 429

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

LCM(1, 429) = 429

GCD(1, 429) = ( 1 x 429 ) / 429

GCD(1, 429) = 429 / 429

GCD(1, 429) = 1

GCD of 638, 427, 55, 429 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 702, 665, 98, 833
• GCD of 296, 128, 60, 721
• GCD of 853, 473, 74, 591
• GCD of 533, 219, 90, 785
• GCD of 456, 223, 12, 283

1. What is the GCD of 638, 427, 55, 429?

GCD of 638, 427, 55, 429 is 1

2. Where do I get the detailed procedure to find GCD of 638, 427, 55, 429?

You can find a detailed procedure to find GCD of 638, 427, 55, 429 on our page.

3. How to find GCD of 638, 427, 55, 429 on a calculator?

You can find the GCD of 638, 427, 55, 429 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.