GCD of 620, 428, 66, 379 Calculator

Given Input numbers are 620, 428, 66, 379

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

Divisors of 620

List of positive integer divisors of 620 that divides 620 without a remainder.

1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620

Divisors of 428

List of positive integer divisors of 428 that divides 428 without a remainder.

1, 2, 4, 107, 214, 428

Divisors of 66

List of positive integer divisors of 66 that divides 66 without a remainder.

1, 2, 3, 6, 11, 22, 33, 66

Divisors of 379

List of positive integer divisors of 379 that divides 379 without a remainder.

1, 379

Greatest Common Divisior

We found the divisors of 620, 428, 66, 379 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 620, 428, 66, 379 is 1.

Therefore, GCD of numbers 620, 428, 66, 379 is 1

Given Input Data is 620, 428, 66, 379

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

Prime Factorization of 620 is 2 x 2 x 5 x 31

Prime Factorization of 428 is 2 x 2 x 107

Prime Factorization of 66 is 2 x 3 x 11

Prime Factorization of 379 is 379

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(620, 428) = 66340

GCD(620, 428) = ( 620 x 428 ) / 66340

GCD(620, 428) = 265360 / 66340

GCD(620, 428) = 4

Step2:

Here we consider the GCD from the above i.e. 4 as first number and the next as 66

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

LCM(4, 66) = 132

GCD(4, 66) = ( 4 x 66 ) / 132

GCD(4, 66) = 264 / 132

GCD(4, 66) = 2

Step3:

Here we consider the GCD from the above i.e. 2 as first number and the next as 379

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

LCM(2, 379) = 758

GCD(2, 379) = ( 2 x 379 ) / 758

GCD(2, 379) = 758 / 758

GCD(2, 379) = 1

GCD of 620, 428, 66, 379 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 589, 217, 16, 382
• GCD of 823, 825, 56, 182
• GCD of 898, 957, 69, 426
• GCD of 762, 831, 59, 112
• GCD of 421, 503, 50, 512

1. What is the GCD of 620, 428, 66, 379?

GCD of 620, 428, 66, 379 is 1

2. Where do I get the detailed procedure to find GCD of 620, 428, 66, 379?

You can find a detailed procedure to find GCD of 620, 428, 66, 379 on our page.

3. How to find GCD of 620, 428, 66, 379 on a calculator?

You can find the GCD of 620, 428, 66, 379 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.