GCD of 74, 85, 42, 90 Calculator

Given Input numbers are 74, 85, 42, 90

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

Divisors of 74

List of positive integer divisors of 74 that divides 74 without a remainder.

1, 2, 37, 74

Divisors of 85

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

1, 5, 17, 85

Divisors of 42

List of positive integer divisors of 42 that divides 42 without a remainder.

1, 2, 3, 6, 7, 14, 21, 42

Divisors of 90

List of positive integer divisors of 90 that divides 90 without a remainder.

1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90

Greatest Common Divisior

We found the divisors of 74, 85, 42, 90 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 74, 85, 42, 90 is 1.

Therefore, GCD of numbers 74, 85, 42, 90 is 1

Given Input Data is 74, 85, 42, 90

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

Prime Factorization of 74 is 2 x 37

Prime Factorization of 85 is 5 x 17

Prime Factorization of 42 is 2 x 3 x 7

Prime Factorization of 90 is 2 x 3 x 3 x 5

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(74, 85) = 6290

GCD(74, 85) = ( 74 x 85 ) / 6290

GCD(74, 85) = 6290 / 6290

GCD(74, 85) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 42

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

LCM(1, 42) = 42

GCD(1, 42) = ( 1 x 42 ) / 42

GCD(1, 42) = 42 / 42

GCD(1, 42) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 90

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

LCM(1, 90) = 90

GCD(1, 90) = ( 1 x 90 ) / 90

GCD(1, 90) = 90 / 90

GCD(1, 90) = 1

GCD of 74, 85, 42, 90 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 25, 60, 18, 16
• GCD of 15, 87, 19, 51
• GCD of 35, 73, 79, 64
• GCD of 37, 30, 62, 18
• GCD of 14, 27, 84, 82

1. What is the GCD of 74, 85, 42, 90?

GCD of 74, 85, 42, 90 is 1

2. Where do I get the detailed procedure to find GCD of 74, 85, 42, 90?

You can find a detailed procedure to find GCD of 74, 85, 42, 90 on our page.

3. How to find GCD of 74, 85, 42, 90 on a calculator?

You can find the GCD of 74, 85, 42, 90 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.