GCD of 61, 85, 25, 70 Calculator

Given Input numbers are 61, 85, 25, 70

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

Divisors of 61

List of positive integer divisors of 61 that divides 61 without a remainder.

1, 61

Divisors of 85

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

1, 5, 17, 85

Divisors of 25

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

1, 5, 25

Divisors of 70

List of positive integer divisors of 70 that divides 70 without a remainder.

1, 2, 5, 7, 10, 14, 35, 70

Greatest Common Divisior

We found the divisors of 61, 85, 25, 70 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 61, 85, 25, 70 is 1.

Therefore, GCD of numbers 61, 85, 25, 70 is 1

Given Input Data is 61, 85, 25, 70

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

Prime Factorization of 61 is 61

Prime Factorization of 85 is 5 x 17

Prime Factorization of 25 is 5 x 5

Prime Factorization of 70 is 2 x 5 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(61, 85) = 5185

GCD(61, 85) = ( 61 x 85 ) / 5185

GCD(61, 85) = 5185 / 5185

GCD(61, 85) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 25

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

LCM(1, 25) = 25

GCD(1, 25) = ( 1 x 25 ) / 25

GCD(1, 25) = 25 / 25

GCD(1, 25) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 70

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

LCM(1, 70) = 70

GCD(1, 70) = ( 1 x 70 ) / 70

GCD(1, 70) = 70 / 70

GCD(1, 70) = 1

GCD of 61, 85, 25, 70 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 77, 54, 24, 89
• GCD of 53, 73, 80, 23
• GCD of 21, 87, 37, 93
• GCD of 96, 78, 68, 70
• GCD of 97, 84, 49, 17

1. What is the GCD of 61, 85, 25, 70?

GCD of 61, 85, 25, 70 is 1

2. Where do I get the detailed procedure to find GCD of 61, 85, 25, 70?

You can find a detailed procedure to find GCD of 61, 85, 25, 70 on our page.

3. How to find GCD of 61, 85, 25, 70 on a calculator?

You can find the GCD of 61, 85, 25, 70 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.