GCD of 55, 45, 15, 43 Calculator

Given Input numbers are 55, 45, 15, 43

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

Divisors of 55

List of positive integer divisors of 55 that divides 55 without a remainder.

1, 5, 11, 55

Divisors of 45

List of positive integer divisors of 45 that divides 45 without a remainder.

1, 3, 5, 9, 15, 45

Divisors of 15

List of positive integer divisors of 15 that divides 15 without a remainder.

1, 3, 5, 15

Divisors of 43

List of positive integer divisors of 43 that divides 43 without a remainder.

1, 43

Greatest Common Divisior

We found the divisors of 55, 45, 15, 43 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 55, 45, 15, 43 is 1.

Therefore, GCD of numbers 55, 45, 15, 43 is 1

Given Input Data is 55, 45, 15, 43

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

Prime Factorization of 55 is 5 x 11

Prime Factorization of 45 is 3 x 3 x 5

Prime Factorization of 15 is 3 x 5

Prime Factorization of 43 is 43

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(55, 45) = 495

GCD(55, 45) = ( 55 x 45 ) / 495

GCD(55, 45) = 2475 / 495

GCD(55, 45) = 5

Step2:

Here we consider the GCD from the above i.e. 5 as first number and the next as 15

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

LCM(5, 15) = 15

GCD(5, 15) = ( 5 x 15 ) / 15

GCD(5, 15) = 75 / 15

GCD(5, 15) = 5

Step3:

Here we consider the GCD from the above i.e. 5 as first number and the next as 43

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

LCM(5, 43) = 215

GCD(5, 43) = ( 5 x 43 ) / 215

GCD(5, 43) = 215 / 215

GCD(5, 43) = 1

GCD of 55, 45, 15, 43 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 71, 62, 27, 18
• GCD of 76, 52, 60, 25
• GCD of 64, 14, 59, 38
• GCD of 19, 67, 17, 32
• GCD of 19, 99, 81, 22

1. What is the GCD of 55, 45, 15, 43?

GCD of 55, 45, 15, 43 is 1

2. Where do I get the detailed procedure to find GCD of 55, 45, 15, 43?

You can find a detailed procedure to find GCD of 55, 45, 15, 43 on our page.

3. How to find GCD of 55, 45, 15, 43 on a calculator?

You can find the GCD of 55, 45, 15, 43 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.