GCD of 61, 55, 69, 91 Calculator

Given Input numbers are 61, 55, 69, 91

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 55

List of positive integer divisors of 55 that divides 55 without a remainder.

1, 5, 11, 55

Divisors of 69

List of positive integer divisors of 69 that divides 69 without a remainder.

1, 3, 23, 69

Divisors of 91

List of positive integer divisors of 91 that divides 91 without a remainder.

1, 7, 13, 91

Greatest Common Divisior

We found the divisors of 61, 55, 69, 91 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 61, 55, 69, 91 is 1.

Therefore, GCD of numbers 61, 55, 69, 91 is 1

Given Input Data is 61, 55, 69, 91

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

Prime Factorization of 61 is 61

Prime Factorization of 55 is 5 x 11

Prime Factorization of 69 is 3 x 23

Prime Factorization of 91 is 7 x 13

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, 55) = 3355

GCD(61, 55) = ( 61 x 55 ) / 3355

GCD(61, 55) = 3355 / 3355

GCD(61, 55) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 69

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

LCM(1, 69) = 69

GCD(1, 69) = ( 1 x 69 ) / 69

GCD(1, 69) = 69 / 69

GCD(1, 69) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 91

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

LCM(1, 91) = 91

GCD(1, 91) = ( 1 x 91 ) / 91

GCD(1, 91) = 91 / 91

GCD(1, 91) = 1

GCD of 61, 55, 69, 91 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 33, 60, 86, 63
• GCD of 72, 55, 26, 65
• GCD of 79, 37, 79, 14
• GCD of 54, 89, 86, 67
• GCD of 71, 72, 56, 69

1. What is the GCD of 61, 55, 69, 91?

GCD of 61, 55, 69, 91 is 1

2. Where do I get the detailed procedure to find GCD of 61, 55, 69, 91?

You can find a detailed procedure to find GCD of 61, 55, 69, 91 on our page.

3. How to find GCD of 61, 55, 69, 91 on a calculator?

You can find the GCD of 61, 55, 69, 91 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.