GCD of 388, 172, 85, 641 Calculator

Given Input numbers are 388, 172, 85, 641

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

Divisors of 388

List of positive integer divisors of 388 that divides 388 without a remainder.

1, 2, 4, 97, 194, 388

Divisors of 172

List of positive integer divisors of 172 that divides 172 without a remainder.

1, 2, 4, 43, 86, 172

Divisors of 85

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

1, 5, 17, 85

Divisors of 641

List of positive integer divisors of 641 that divides 641 without a remainder.

1, 641

Greatest Common Divisior

We found the divisors of 388, 172, 85, 641 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 388, 172, 85, 641 is 1.

Therefore, GCD of numbers 388, 172, 85, 641 is 1

Given Input Data is 388, 172, 85, 641

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

Prime Factorization of 388 is 2 x 2 x 97

Prime Factorization of 172 is 2 x 2 x 43

Prime Factorization of 85 is 5 x 17

Prime Factorization of 641 is 641

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(388, 172) = 16684

GCD(388, 172) = ( 388 x 172 ) / 16684

GCD(388, 172) = 66736 / 16684

GCD(388, 172) = 4

Step2:

Here we consider the GCD from the above i.e. 4 as first number and the next as 85

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

LCM(4, 85) = 340

GCD(4, 85) = ( 4 x 85 ) / 340

GCD(4, 85) = 340 / 340

GCD(4, 85) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 641

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

LCM(1, 641) = 641

GCD(1, 641) = ( 1 x 641 ) / 641

GCD(1, 641) = 641 / 641

GCD(1, 641) = 1

GCD of 388, 172, 85, 641 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 925, 375, 10, 558
• GCD of 339, 294, 23, 835
• GCD of 412, 256, 68, 804
• GCD of 943, 831, 53, 148
• GCD of 308, 183, 45, 336

1. What is the GCD of 388, 172, 85, 641?

GCD of 388, 172, 85, 641 is 1

2. Where do I get the detailed procedure to find GCD of 388, 172, 85, 641?

You can find a detailed procedure to find GCD of 388, 172, 85, 641 on our page.

3. How to find GCD of 388, 172, 85, 641 on a calculator?

You can find the GCD of 388, 172, 85, 641 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.