GCD of 653, 390, 80, 278 Calculator

Given Input numbers are 653, 390, 80, 278

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

Divisors of 653

List of positive integer divisors of 653 that divides 653 without a remainder.

1, 653

Divisors of 390

List of positive integer divisors of 390 that divides 390 without a remainder.

1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390

Divisors of 80

List of positive integer divisors of 80 that divides 80 without a remainder.

1, 2, 4, 5, 8, 10, 16, 20, 40, 80

Divisors of 278

List of positive integer divisors of 278 that divides 278 without a remainder.

1, 2, 139, 278

Greatest Common Divisior

We found the divisors of 653, 390, 80, 278 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 653, 390, 80, 278 is 1.

Therefore, GCD of numbers 653, 390, 80, 278 is 1

Given Input Data is 653, 390, 80, 278

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

Prime Factorization of 653 is 653

Prime Factorization of 390 is 2 x 3 x 5 x 13

Prime Factorization of 80 is 2 x 2 x 2 x 2 x 5

Prime Factorization of 278 is 2 x 139

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(653, 390) = 254670

GCD(653, 390) = ( 653 x 390 ) / 254670

GCD(653, 390) = 254670 / 254670

GCD(653, 390) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 80

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

LCM(1, 80) = 80

GCD(1, 80) = ( 1 x 80 ) / 80

GCD(1, 80) = 80 / 80

GCD(1, 80) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 278

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

LCM(1, 278) = 278

GCD(1, 278) = ( 1 x 278 ) / 278

GCD(1, 278) = 278 / 278

GCD(1, 278) = 1

GCD of 653, 390, 80, 278 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 778, 578, 49, 716
• GCD of 101, 516, 85, 255
• GCD of 292, 459, 52, 813
• GCD of 675, 416, 77, 134
• GCD of 543, 851, 24, 296

1. What is the GCD of 653, 390, 80, 278?

GCD of 653, 390, 80, 278 is 1

2. Where do I get the detailed procedure to find GCD of 653, 390, 80, 278?

You can find a detailed procedure to find GCD of 653, 390, 80, 278 on our page.

3. How to find GCD of 653, 390, 80, 278 on a calculator?

You can find the GCD of 653, 390, 80, 278 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.