GCD of 423, 170, 70, 505 Calculator

Given Input numbers are 423, 170, 70, 505

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

Divisors of 423

List of positive integer divisors of 423 that divides 423 without a remainder.

1, 3, 9, 47, 141, 423

Divisors of 170

List of positive integer divisors of 170 that divides 170 without a remainder.

1, 2, 5, 10, 17, 34, 85, 170

Divisors of 70

List of positive integer divisors of 70 that divides 70 without a remainder.

1, 2, 5, 7, 10, 14, 35, 70

Divisors of 505

List of positive integer divisors of 505 that divides 505 without a remainder.

1, 5, 101, 505

Greatest Common Divisior

We found the divisors of 423, 170, 70, 505 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 423, 170, 70, 505 is 1.

Therefore, GCD of numbers 423, 170, 70, 505 is 1

Given Input Data is 423, 170, 70, 505

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

Prime Factorization of 423 is 3 x 3 x 47

Prime Factorization of 170 is 2 x 5 x 17

Prime Factorization of 70 is 2 x 5 x 7

Prime Factorization of 505 is 5 x 101

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(423, 170) = 71910

GCD(423, 170) = ( 423 x 170 ) / 71910

GCD(423, 170) = 71910 / 71910

GCD(423, 170) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 70

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

LCM(1, 70) = 70

GCD(1, 70) = ( 1 x 70 ) / 70

GCD(1, 70) = 70 / 70

GCD(1, 70) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 505

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

LCM(1, 505) = 505

GCD(1, 505) = ( 1 x 505 ) / 505

GCD(1, 505) = 505 / 505

GCD(1, 505) = 1

GCD of 423, 170, 70, 505 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 826, 101, 30, 188
• GCD of 129, 545, 32, 212
• GCD of 259, 620, 64, 201
• GCD of 335, 456, 76, 422
• GCD of 447, 600, 39, 388

1. What is the GCD of 423, 170, 70, 505?

GCD of 423, 170, 70, 505 is 1

2. Where do I get the detailed procedure to find GCD of 423, 170, 70, 505?

You can find a detailed procedure to find GCD of 423, 170, 70, 505 on our page.

3. How to find GCD of 423, 170, 70, 505 on a calculator?

You can find the GCD of 423, 170, 70, 505 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.