GCD of 645, 126, 268, 778 Calculator

Given Input numbers are 645, 126, 268, 778

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

Divisors of 645

List of positive integer divisors of 645 that divides 645 without a remainder.

1, 3, 5, 15, 43, 129, 215, 645

Divisors of 126

List of positive integer divisors of 126 that divides 126 without a remainder.

1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126

Divisors of 268

List of positive integer divisors of 268 that divides 268 without a remainder.

1, 2, 4, 67, 134, 268

Divisors of 778

List of positive integer divisors of 778 that divides 778 without a remainder.

1, 2, 389, 778

Greatest Common Divisior

We found the divisors of 645, 126, 268, 778 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 645, 126, 268, 778 is 1.

Therefore, GCD of numbers 645, 126, 268, 778 is 1

Given Input Data is 645, 126, 268, 778

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

Prime Factorization of 645 is 3 x 5 x 43

Prime Factorization of 126 is 2 x 3 x 3 x 7

Prime Factorization of 268 is 2 x 2 x 67

Prime Factorization of 778 is 2 x 389

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(645, 126) = 27090

GCD(645, 126) = ( 645 x 126 ) / 27090

GCD(645, 126) = 81270 / 27090

GCD(645, 126) = 3

Step2:

Here we consider the GCD from the above i.e. 3 as first number and the next as 268

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

LCM(3, 268) = 804

GCD(3, 268) = ( 3 x 268 ) / 804

GCD(3, 268) = 804 / 804

GCD(3, 268) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 778

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

LCM(1, 778) = 778

GCD(1, 778) = ( 1 x 778 ) / 778

GCD(1, 778) = 778 / 778

GCD(1, 778) = 1

GCD of 645, 126, 268, 778 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 906, 160, 266, 904
• GCD of 529, 251, 958, 835
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• GCD of 251, 514, 431, 544
• GCD of 187, 784, 131, 492

1. What is the GCD of 645, 126, 268, 778?

GCD of 645, 126, 268, 778 is 1

2. Where do I get the detailed procedure to find GCD of 645, 126, 268, 778?

You can find a detailed procedure to find GCD of 645, 126, 268, 778 on our page.

3. How to find GCD of 645, 126, 268, 778 on a calculator?

You can find the GCD of 645, 126, 268, 778 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.