GCD of 645, 437, 85, 764 Calculator

Given Input numbers are 645, 437, 85, 764

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 437

List of positive integer divisors of 437 that divides 437 without a remainder.

1, 19, 23, 437

Divisors of 85

List of positive integer divisors of 85 that divides 85 without a remainder.

1, 5, 17, 85

Divisors of 764

List of positive integer divisors of 764 that divides 764 without a remainder.

1, 2, 4, 191, 382, 764

Greatest Common Divisior

We found the divisors of 645, 437, 85, 764 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 645, 437, 85, 764 is 1.

Therefore, GCD of numbers 645, 437, 85, 764 is 1

Given Input Data is 645, 437, 85, 764

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 437 is 19 x 23

Prime Factorization of 85 is 5 x 17

Prime Factorization of 764 is 2 x 2 x 191

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, 437) = 281865

GCD(645, 437) = ( 645 x 437 ) / 281865

GCD(645, 437) = 281865 / 281865

GCD(645, 437) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 85

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

LCM(1, 85) = 85

GCD(1, 85) = ( 1 x 85 ) / 85

GCD(1, 85) = 85 / 85

GCD(1, 85) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 764

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

LCM(1, 764) = 764

GCD(1, 764) = ( 1 x 764 ) / 764

GCD(1, 764) = 764 / 764

GCD(1, 764) = 1

GCD of 645, 437, 85, 764 is 1

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• GCD of 678, 944, 31, 416
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• GCD of 581, 218, 56, 252

1. What is the GCD of 645, 437, 85, 764?

GCD of 645, 437, 85, 764 is 1

2. Where do I get the detailed procedure to find GCD of 645, 437, 85, 764?

You can find a detailed procedure to find GCD of 645, 437, 85, 764 on our page.

3. How to find GCD of 645, 437, 85, 764 on a calculator?

You can find the GCD of 645, 437, 85, 764 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.