GCD of 551, 491, 90, 661 Calculator

Given Input numbers are 551, 491, 90, 661

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

Divisors of 551

List of positive integer divisors of 551 that divides 551 without a remainder.

1, 19, 29, 551

Divisors of 491

List of positive integer divisors of 491 that divides 491 without a remainder.

1, 491

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

Divisors of 661

List of positive integer divisors of 661 that divides 661 without a remainder.

1, 661

Greatest Common Divisior

We found the divisors of 551, 491, 90, 661 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 551, 491, 90, 661 is 1.

Therefore, GCD of numbers 551, 491, 90, 661 is 1

Given Input Data is 551, 491, 90, 661

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

Prime Factorization of 551 is 19 x 29

Prime Factorization of 491 is 491

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

Prime Factorization of 661 is 661

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(551, 491) = 270541

GCD(551, 491) = ( 551 x 491 ) / 270541

GCD(551, 491) = 270541 / 270541

GCD(551, 491) = 1

Step2:

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

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 661

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

LCM(1, 661) = 661

GCD(1, 661) = ( 1 x 661 ) / 661

GCD(1, 661) = 661 / 661

GCD(1, 661) = 1

GCD of 551, 491, 90, 661 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 409, 190, 31, 555
• GCD of 702, 975, 59, 324
• GCD of 375, 934, 28, 179
• GCD of 563, 366, 71, 505
• GCD of 642, 247, 10, 915

1. What is the GCD of 551, 491, 90, 661?

GCD of 551, 491, 90, 661 is 1

2. Where do I get the detailed procedure to find GCD of 551, 491, 90, 661?

You can find a detailed procedure to find GCD of 551, 491, 90, 661 on our page.

3. How to find GCD of 551, 491, 90, 661 on a calculator?

You can find the GCD of 551, 491, 90, 661 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.