GCD of 77, 57, 15, 63 Calculator

Given Input numbers are 77, 57, 15, 63

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

Divisors of 77

List of positive integer divisors of 77 that divides 77 without a remainder.

1, 7, 11, 77

Divisors of 57

List of positive integer divisors of 57 that divides 57 without a remainder.

1, 3, 19, 57

Divisors of 15

List of positive integer divisors of 15 that divides 15 without a remainder.

1, 3, 5, 15

Divisors of 63

List of positive integer divisors of 63 that divides 63 without a remainder.

1, 3, 7, 9, 21, 63

Greatest Common Divisior

We found the divisors of 77, 57, 15, 63 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 77, 57, 15, 63 is 1.

Therefore, GCD of numbers 77, 57, 15, 63 is 1

Given Input Data is 77, 57, 15, 63

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

Prime Factorization of 77 is 7 x 11

Prime Factorization of 57 is 3 x 19

Prime Factorization of 15 is 3 x 5

Prime Factorization of 63 is 3 x 3 x 7

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(77, 57) = 4389

GCD(77, 57) = ( 77 x 57 ) / 4389

GCD(77, 57) = 4389 / 4389

GCD(77, 57) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 15

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

LCM(1, 15) = 15

GCD(1, 15) = ( 1 x 15 ) / 15

GCD(1, 15) = 15 / 15

GCD(1, 15) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 63

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

LCM(1, 63) = 63

GCD(1, 63) = ( 1 x 63 ) / 63

GCD(1, 63) = 63 / 63

GCD(1, 63) = 1

GCD of 77, 57, 15, 63 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 65, 13, 95, 60
• GCD of 66, 89, 75, 55
• GCD of 81, 71, 41, 70
• GCD of 33, 31, 24, 80
• GCD of 81, 66, 83, 27

1. What is the GCD of 77, 57, 15, 63?

GCD of 77, 57, 15, 63 is 1

2. Where do I get the detailed procedure to find GCD of 77, 57, 15, 63?

You can find a detailed procedure to find GCD of 77, 57, 15, 63 on our page.

3. How to find GCD of 77, 57, 15, 63 on a calculator?

You can find the GCD of 77, 57, 15, 63 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.