GCD of 391, 840, 502 Calculator

Given Input numbers are 391, 840, 502

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

Divisors of 391

List of positive integer divisors of 391 that divides 391 without a remainder.

1, 17, 23, 391

Divisors of 840

List of positive integer divisors of 840 that divides 840 without a remainder.

1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840

Divisors of 502

List of positive integer divisors of 502 that divides 502 without a remainder.

1, 2, 251, 502

Greatest Common Divisior

We found the divisors of 391, 840, 502 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 391, 840, 502 is 1.

Therefore, GCD of numbers 391, 840, 502 is 1

Given Input Data is 391, 840, 502

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

Prime Factorization of 391 is 17 x 23

Prime Factorization of 840 is 2 x 2 x 2 x 3 x 5 x 7

Prime Factorization of 502 is 2 x 251

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(391, 840) = 328440

GCD(391, 840) = ( 391 x 840 ) / 328440

GCD(391, 840) = 328440 / 328440

GCD(391, 840) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 502

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

LCM(1, 502) = 502

GCD(1, 502) = ( 1 x 502 ) / 502

GCD(1, 502) = 502 / 502

GCD(1, 502) = 1

GCD of 391, 840, 502 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 130, 969, 497
• GCD of 487, 214, 598
• GCD of 988, 842, 276
• GCD of 530, 763, 201
• GCD of 176, 224, 705

1. What is the GCD of 391, 840, 502?

GCD of 391, 840, 502 is 1

2. Where do I get the detailed procedure to find GCD of 391, 840, 502?

You can find a detailed procedure to find GCD of 391, 840, 502 on our page.

3. How to find GCD of 391, 840, 502 on a calculator?

You can find the GCD of 391, 840, 502 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.