GCD of 85, 285, 745, 247 Calculator

Given Input numbers are 85, 285, 745, 247

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

Divisors of 85

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

1, 5, 17, 85

Divisors of 285

List of positive integer divisors of 285 that divides 285 without a remainder.

1, 3, 5, 15, 19, 57, 95, 285

Divisors of 745

List of positive integer divisors of 745 that divides 745 without a remainder.

1, 5, 149, 745

Divisors of 247

List of positive integer divisors of 247 that divides 247 without a remainder.

1, 13, 19, 247

Greatest Common Divisior

We found the divisors of 85, 285, 745, 247 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 85, 285, 745, 247 is 1.

Therefore, GCD of numbers 85, 285, 745, 247 is 1

Given Input Data is 85, 285, 745, 247

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

Prime Factorization of 85 is 5 x 17

Prime Factorization of 285 is 3 x 5 x 19

Prime Factorization of 745 is 5 x 149

Prime Factorization of 247 is 13 x 19

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(85, 285) = 4845

GCD(85, 285) = ( 85 x 285 ) / 4845

GCD(85, 285) = 24225 / 4845

GCD(85, 285) = 5

Step2:

Here we consider the GCD from the above i.e. 5 as first number and the next as 745

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

LCM(5, 745) = 745

GCD(5, 745) = ( 5 x 745 ) / 745

GCD(5, 745) = 3725 / 745

GCD(5, 745) = 5

Step3:

Here we consider the GCD from the above i.e. 5 as first number and the next as 247

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

LCM(5, 247) = 1235

GCD(5, 247) = ( 5 x 247 ) / 1235

GCD(5, 247) = 1235 / 1235

GCD(5, 247) = 1

GCD of 85, 285, 745, 247 is 1

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• GCD of 83, 933, 829, 519
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1. What is the GCD of 85, 285, 745, 247?

GCD of 85, 285, 745, 247 is 1

2. Where do I get the detailed procedure to find GCD of 85, 285, 745, 247?

You can find a detailed procedure to find GCD of 85, 285, 745, 247 on our page.

3. How to find GCD of 85, 285, 745, 247 on a calculator?

You can find the GCD of 85, 285, 745, 247 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.