GCD of 670, 385, 81, 207 Calculator

Given Input numbers are 670, 385, 81, 207

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

Divisors of 670

List of positive integer divisors of 670 that divides 670 without a remainder.

1, 2, 5, 10, 67, 134, 335, 670

Divisors of 385

List of positive integer divisors of 385 that divides 385 without a remainder.

1, 5, 7, 11, 35, 55, 77, 385

Divisors of 81

List of positive integer divisors of 81 that divides 81 without a remainder.

1, 3, 9, 27, 81

Divisors of 207

List of positive integer divisors of 207 that divides 207 without a remainder.

1, 3, 9, 23, 69, 207

Greatest Common Divisior

We found the divisors of 670, 385, 81, 207 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 670, 385, 81, 207 is 1.

Therefore, GCD of numbers 670, 385, 81, 207 is 1

Given Input Data is 670, 385, 81, 207

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

Prime Factorization of 670 is 2 x 5 x 67

Prime Factorization of 385 is 5 x 7 x 11

Prime Factorization of 81 is 3 x 3 x 3 x 3

Prime Factorization of 207 is 3 x 3 x 23

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(670, 385) = 51590

GCD(670, 385) = ( 670 x 385 ) / 51590

GCD(670, 385) = 257950 / 51590

GCD(670, 385) = 5

Step2:

Here we consider the GCD from the above i.e. 5 as first number and the next as 81

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

LCM(5, 81) = 405

GCD(5, 81) = ( 5 x 81 ) / 405

GCD(5, 81) = 405 / 405

GCD(5, 81) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 207

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

LCM(1, 207) = 207

GCD(1, 207) = ( 1 x 207 ) / 207

GCD(1, 207) = 207 / 207

GCD(1, 207) = 1

GCD of 670, 385, 81, 207 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 453, 314, 44, 131
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• GCD of 160, 400, 36, 511
• GCD of 202, 572, 92, 654
• GCD of 368, 277, 56, 478

1. What is the GCD of 670, 385, 81, 207?

GCD of 670, 385, 81, 207 is 1

2. Where do I get the detailed procedure to find GCD of 670, 385, 81, 207?

You can find a detailed procedure to find GCD of 670, 385, 81, 207 on our page.

3. How to find GCD of 670, 385, 81, 207 on a calculator?

You can find the GCD of 670, 385, 81, 207 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.