GCD of 77, 25, 78, 85 Calculator

Given Input numbers are 77, 25, 78, 85

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 25

List of positive integer divisors of 25 that divides 25 without a remainder.

1, 5, 25

Divisors of 78

List of positive integer divisors of 78 that divides 78 without a remainder.

1, 2, 3, 6, 13, 26, 39, 78

Divisors of 85

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

1, 5, 17, 85

Greatest Common Divisior

We found the divisors of 77, 25, 78, 85 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 77, 25, 78, 85 is 1.

Therefore, GCD of numbers 77, 25, 78, 85 is 1

Given Input Data is 77, 25, 78, 85

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

Prime Factorization of 77 is 7 x 11

Prime Factorization of 25 is 5 x 5

Prime Factorization of 78 is 2 x 3 x 13

Prime Factorization of 85 is 5 x 17

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, 25) = 1925

GCD(77, 25) = ( 77 x 25 ) / 1925

GCD(77, 25) = 1925 / 1925

GCD(77, 25) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 78

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

LCM(1, 78) = 78

GCD(1, 78) = ( 1 x 78 ) / 78

GCD(1, 78) = 78 / 78

GCD(1, 78) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 85

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

LCM(1, 85) = 85

GCD(1, 85) = ( 1 x 85 ) / 85

GCD(1, 85) = 85 / 85

GCD(1, 85) = 1

GCD of 77, 25, 78, 85 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 35, 12, 40, 64
• GCD of 49, 39, 90, 18
• GCD of 70, 74, 48, 41
• GCD of 55, 83, 94, 87
• GCD of 14, 70, 44, 75

1. What is the GCD of 77, 25, 78, 85?

GCD of 77, 25, 78, 85 is 1

2. Where do I get the detailed procedure to find GCD of 77, 25, 78, 85?

You can find a detailed procedure to find GCD of 77, 25, 78, 85 on our page.

3. How to find GCD of 77, 25, 78, 85 on a calculator?

You can find the GCD of 77, 25, 78, 85 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.