GCD of 661, 780, 474, 151 Calculator

Given Input numbers are 661, 780, 474, 151

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

Divisors of 661

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

1, 661

Divisors of 780

List of positive integer divisors of 780 that divides 780 without a remainder.

1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780

Divisors of 474

List of positive integer divisors of 474 that divides 474 without a remainder.

1, 2, 3, 6, 79, 158, 237, 474

Divisors of 151

List of positive integer divisors of 151 that divides 151 without a remainder.

1, 151

Greatest Common Divisior

We found the divisors of 661, 780, 474, 151 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 661, 780, 474, 151 is 1.

Therefore, GCD of numbers 661, 780, 474, 151 is 1

Given Input Data is 661, 780, 474, 151

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

Prime Factorization of 661 is 661

Prime Factorization of 780 is 2 x 2 x 3 x 5 x 13

Prime Factorization of 474 is 2 x 3 x 79

Prime Factorization of 151 is 151

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(661, 780) = 515580

GCD(661, 780) = ( 661 x 780 ) / 515580

GCD(661, 780) = 515580 / 515580

GCD(661, 780) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 474

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

LCM(1, 474) = 474

GCD(1, 474) = ( 1 x 474 ) / 474

GCD(1, 474) = 474 / 474

GCD(1, 474) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 151

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

LCM(1, 151) = 151

GCD(1, 151) = ( 1 x 151 ) / 151

GCD(1, 151) = 151 / 151

GCD(1, 151) = 1

GCD of 661, 780, 474, 151 is 1

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1. What is the GCD of 661, 780, 474, 151?

GCD of 661, 780, 474, 151 is 1

2. Where do I get the detailed procedure to find GCD of 661, 780, 474, 151?

You can find a detailed procedure to find GCD of 661, 780, 474, 151 on our page.

3. How to find GCD of 661, 780, 474, 151 on a calculator?

You can find the GCD of 661, 780, 474, 151 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.