GCD of 61, 655, 567, 642 Calculator

Given Input numbers are 61, 655, 567, 642

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

Divisors of 61

List of positive integer divisors of 61 that divides 61 without a remainder.

1, 61

Divisors of 655

List of positive integer divisors of 655 that divides 655 without a remainder.

1, 5, 131, 655

Divisors of 567

List of positive integer divisors of 567 that divides 567 without a remainder.

1, 3, 7, 9, 21, 27, 63, 81, 189, 567

Divisors of 642

List of positive integer divisors of 642 that divides 642 without a remainder.

1, 2, 3, 6, 107, 214, 321, 642

Greatest Common Divisior

We found the divisors of 61, 655, 567, 642 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 61, 655, 567, 642 is 1.

Therefore, GCD of numbers 61, 655, 567, 642 is 1

Given Input Data is 61, 655, 567, 642

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

Prime Factorization of 61 is 61

Prime Factorization of 655 is 5 x 131

Prime Factorization of 567 is 3 x 3 x 3 x 3 x 7

Prime Factorization of 642 is 2 x 3 x 107

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(61, 655) = 39955

GCD(61, 655) = ( 61 x 655 ) / 39955

GCD(61, 655) = 39955 / 39955

GCD(61, 655) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 567

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

LCM(1, 567) = 567

GCD(1, 567) = ( 1 x 567 ) / 567

GCD(1, 567) = 567 / 567

GCD(1, 567) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 642

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

LCM(1, 642) = 642

GCD(1, 642) = ( 1 x 642 ) / 642

GCD(1, 642) = 642 / 642

GCD(1, 642) = 1

GCD of 61, 655, 567, 642 is 1

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1. What is the GCD of 61, 655, 567, 642?

GCD of 61, 655, 567, 642 is 1

2. Where do I get the detailed procedure to find GCD of 61, 655, 567, 642?

You can find a detailed procedure to find GCD of 61, 655, 567, 642 on our page.

3. How to find GCD of 61, 655, 567, 642 on a calculator?

You can find the GCD of 61, 655, 567, 642 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.