GCD of 620, 357, 78, 993 Calculator

Given Input numbers are 620, 357, 78, 993

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 357

List of positive integer divisors of 357 that divides 357 without a remainder.

1, 3, 7, 17, 21, 51, 119, 357

Divisors of 78

List of positive integer divisors of 78 that divides 78 without a remainder.

1, 2, 3, 6, 13, 26, 39, 78

Divisors of 993

List of positive integer divisors of 993 that divides 993 without a remainder.

1, 3, 331, 993

Greatest Common Divisior

We found the divisors of 620, 357, 78, 993 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 620, 357, 78, 993 is 1.

Therefore, GCD of numbers 620, 357, 78, 993 is 1

Given Input Data is 620, 357, 78, 993

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 357 is 3 x 7 x 17

Prime Factorization of 78 is 2 x 3 x 13

Prime Factorization of 993 is 3 x 331

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, 357) = 221340

GCD(620, 357) = ( 620 x 357 ) / 221340

GCD(620, 357) = 221340 / 221340

GCD(620, 357) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 78

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

LCM(1, 78) = 78

GCD(1, 78) = ( 1 x 78 ) / 78

GCD(1, 78) = 78 / 78

GCD(1, 78) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 993

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

LCM(1, 993) = 993

GCD(1, 993) = ( 1 x 993 ) / 993

GCD(1, 993) = 993 / 993

GCD(1, 993) = 1

GCD of 620, 357, 78, 993 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 363, 104, 37, 172
• GCD of 518, 552, 33, 217
• GCD of 105, 189, 11, 395
• GCD of 626, 470, 10, 990
• GCD of 416, 958, 75, 680

1. What is the GCD of 620, 357, 78, 993?

GCD of 620, 357, 78, 993 is 1

2. Where do I get the detailed procedure to find GCD of 620, 357, 78, 993?

You can find a detailed procedure to find GCD of 620, 357, 78, 993 on our page.

3. How to find GCD of 620, 357, 78, 993 on a calculator?

You can find the GCD of 620, 357, 78, 993 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.