GCD of 691, 217, 124, 387 Calculator

Given Input numbers are 691, 217, 124, 387

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

Divisors of 691

List of positive integer divisors of 691 that divides 691 without a remainder.

1, 691

Divisors of 217

List of positive integer divisors of 217 that divides 217 without a remainder.

1, 7, 31, 217

Divisors of 124

List of positive integer divisors of 124 that divides 124 without a remainder.

1, 2, 4, 31, 62, 124

Divisors of 387

List of positive integer divisors of 387 that divides 387 without a remainder.

1, 3, 9, 43, 129, 387

Greatest Common Divisior

We found the divisors of 691, 217, 124, 387 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 691, 217, 124, 387 is 1.

Therefore, GCD of numbers 691, 217, 124, 387 is 1

Given Input Data is 691, 217, 124, 387

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

Prime Factorization of 691 is 691

Prime Factorization of 217 is 7 x 31

Prime Factorization of 124 is 2 x 2 x 31

Prime Factorization of 387 is 3 x 3 x 43

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(691, 217) = 149947

GCD(691, 217) = ( 691 x 217 ) / 149947

GCD(691, 217) = 149947 / 149947

GCD(691, 217) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 124

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

LCM(1, 124) = 124

GCD(1, 124) = ( 1 x 124 ) / 124

GCD(1, 124) = 124 / 124

GCD(1, 124) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 387

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

LCM(1, 387) = 387

GCD(1, 387) = ( 1 x 387 ) / 387

GCD(1, 387) = 387 / 387

GCD(1, 387) = 1

GCD of 691, 217, 124, 387 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 999, 978, 690, 897
• GCD of 865, 695, 907, 952
• GCD of 700, 158, 302, 854
• GCD of 808, 486, 643, 922
• GCD of 329, 163, 848, 631

1. What is the GCD of 691, 217, 124, 387?

GCD of 691, 217, 124, 387 is 1

2. Where do I get the detailed procedure to find GCD of 691, 217, 124, 387?

You can find a detailed procedure to find GCD of 691, 217, 124, 387 on our page.

3. How to find GCD of 691, 217, 124, 387 on a calculator?

You can find the GCD of 691, 217, 124, 387 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.