GCD of 561, 755, 320, 545 Calculator

Given Input numbers are 561, 755, 320, 545

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

Divisors of 561

List of positive integer divisors of 561 that divides 561 without a remainder.

1, 3, 11, 17, 33, 51, 187, 561

Divisors of 755

List of positive integer divisors of 755 that divides 755 without a remainder.

1, 5, 151, 755

Divisors of 320

List of positive integer divisors of 320 that divides 320 without a remainder.

1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320

Divisors of 545

List of positive integer divisors of 545 that divides 545 without a remainder.

1, 5, 109, 545

Greatest Common Divisior

We found the divisors of 561, 755, 320, 545 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 561, 755, 320, 545 is 1.

Therefore, GCD of numbers 561, 755, 320, 545 is 1

Given Input Data is 561, 755, 320, 545

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

Prime Factorization of 561 is 3 x 11 x 17

Prime Factorization of 755 is 5 x 151

Prime Factorization of 320 is 2 x 2 x 2 x 2 x 2 x 2 x 5

Prime Factorization of 545 is 5 x 109

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(561, 755) = 423555

GCD(561, 755) = ( 561 x 755 ) / 423555

GCD(561, 755) = 423555 / 423555

GCD(561, 755) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 320

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

LCM(1, 320) = 320

GCD(1, 320) = ( 1 x 320 ) / 320

GCD(1, 320) = 320 / 320

GCD(1, 320) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 545

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

LCM(1, 545) = 545

GCD(1, 545) = ( 1 x 545 ) / 545

GCD(1, 545) = 545 / 545

GCD(1, 545) = 1

GCD of 561, 755, 320, 545 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 563, 992, 690, 460
• GCD of 304, 385, 899, 159
• GCD of 561, 388, 511, 637
• GCD of 239, 211, 183, 521
• GCD of 650, 934, 503, 996

1. What is the GCD of 561, 755, 320, 545?

GCD of 561, 755, 320, 545 is 1

2. Where do I get the detailed procedure to find GCD of 561, 755, 320, 545?

You can find a detailed procedure to find GCD of 561, 755, 320, 545 on our page.

3. How to find GCD of 561, 755, 320, 545 on a calculator?

You can find the GCD of 561, 755, 320, 545 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.