GCD of 642, 496, 421 Calculator

Given Input numbers are 642, 496, 421

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

Divisors of 642

List of positive integer divisors of 642 that divides 642 without a remainder.

1, 2, 3, 6, 107, 214, 321, 642

Divisors of 496

List of positive integer divisors of 496 that divides 496 without a remainder.

1, 2, 4, 8, 16, 31, 62, 124, 248, 496

Divisors of 421

List of positive integer divisors of 421 that divides 421 without a remainder.

1, 421

Greatest Common Divisior

We found the divisors of 642, 496, 421 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 642, 496, 421 is 1.

Therefore, GCD of numbers 642, 496, 421 is 1

Given Input Data is 642, 496, 421

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

Prime Factorization of 642 is 2 x 3 x 107

Prime Factorization of 496 is 2 x 2 x 2 x 2 x 31

Prime Factorization of 421 is 421

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(642, 496) = 159216

GCD(642, 496) = ( 642 x 496 ) / 159216

GCD(642, 496) = 318432 / 159216

GCD(642, 496) = 2

Step2:

Here we consider the GCD from the above i.e. 2 as first number and the next as 421

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

LCM(2, 421) = 842

GCD(2, 421) = ( 2 x 421 ) / 842

GCD(2, 421) = 842 / 842

GCD(2, 421) = 1

GCD of 642, 496, 421 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 583, 466, 646
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• GCD of 255, 655, 686
• GCD of 423, 259, 887
• GCD of 858, 895, 846

1. What is the GCD of 642, 496, 421?

GCD of 642, 496, 421 is 1

2. Where do I get the detailed procedure to find GCD of 642, 496, 421?

You can find a detailed procedure to find GCD of 642, 496, 421 on our page.

3. How to find GCD of 642, 496, 421 on a calculator?

You can find the GCD of 642, 496, 421 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.