GCD of 755, 965, 21, 668 Calculator

Given Input numbers are 755, 965, 21, 668

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

Divisors of 755

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

1, 5, 151, 755

Divisors of 965

List of positive integer divisors of 965 that divides 965 without a remainder.

1, 5, 193, 965

Divisors of 21

List of positive integer divisors of 21 that divides 21 without a remainder.

1, 3, 7, 21

Divisors of 668

List of positive integer divisors of 668 that divides 668 without a remainder.

1, 2, 4, 167, 334, 668

Greatest Common Divisior

We found the divisors of 755, 965, 21, 668 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 755, 965, 21, 668 is 1.

Therefore, GCD of numbers 755, 965, 21, 668 is 1

Given Input Data is 755, 965, 21, 668

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

Prime Factorization of 755 is 5 x 151

Prime Factorization of 965 is 5 x 193

Prime Factorization of 21 is 3 x 7

Prime Factorization of 668 is 2 x 2 x 167

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(755, 965) = 145715

GCD(755, 965) = ( 755 x 965 ) / 145715

GCD(755, 965) = 728575 / 145715

GCD(755, 965) = 5

Step2:

Here we consider the GCD from the above i.e. 5 as first number and the next as 21

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

LCM(5, 21) = 105

GCD(5, 21) = ( 5 x 21 ) / 105

GCD(5, 21) = 105 / 105

GCD(5, 21) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 668

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

LCM(1, 668) = 668

GCD(1, 668) = ( 1 x 668 ) / 668

GCD(1, 668) = 668 / 668

GCD(1, 668) = 1

GCD of 755, 965, 21, 668 is 1

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• GCD of 553, 425, 77, 297
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1. What is the GCD of 755, 965, 21, 668?

GCD of 755, 965, 21, 668 is 1

2. Where do I get the detailed procedure to find GCD of 755, 965, 21, 668?

You can find a detailed procedure to find GCD of 755, 965, 21, 668 on our page.

3. How to find GCD of 755, 965, 21, 668 on a calculator?

You can find the GCD of 755, 965, 21, 668 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.