GCD of 615, 159, 340, 661 Calculator

Given Input numbers are 615, 159, 340, 661

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

Divisors of 615

List of positive integer divisors of 615 that divides 615 without a remainder.

1, 3, 5, 15, 41, 123, 205, 615

Divisors of 159

List of positive integer divisors of 159 that divides 159 without a remainder.

1, 3, 53, 159

Divisors of 340

List of positive integer divisors of 340 that divides 340 without a remainder.

1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340

Divisors of 661

List of positive integer divisors of 661 that divides 661 without a remainder.

1, 661

Greatest Common Divisior

We found the divisors of 615, 159, 340, 661 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 615, 159, 340, 661 is 1.

Therefore, GCD of numbers 615, 159, 340, 661 is 1

Given Input Data is 615, 159, 340, 661

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

Prime Factorization of 615 is 3 x 5 x 41

Prime Factorization of 159 is 3 x 53

Prime Factorization of 340 is 2 x 2 x 5 x 17

Prime Factorization of 661 is 661

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(615, 159) = 32595

GCD(615, 159) = ( 615 x 159 ) / 32595

GCD(615, 159) = 97785 / 32595

GCD(615, 159) = 3

Step2:

Here we consider the GCD from the above i.e. 3 as first number and the next as 340

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

LCM(3, 340) = 1020

GCD(3, 340) = ( 3 x 340 ) / 1020

GCD(3, 340) = 1020 / 1020

GCD(3, 340) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 661

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

LCM(1, 661) = 661

GCD(1, 661) = ( 1 x 661 ) / 661

GCD(1, 661) = 661 / 661

GCD(1, 661) = 1

GCD of 615, 159, 340, 661 is 1

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1. What is the GCD of 615, 159, 340, 661?

GCD of 615, 159, 340, 661 is 1

2. Where do I get the detailed procedure to find GCD of 615, 159, 340, 661?

You can find a detailed procedure to find GCD of 615, 159, 340, 661 on our page.

3. How to find GCD of 615, 159, 340, 661 on a calculator?

You can find the GCD of 615, 159, 340, 661 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.