GCD of 620, 705, 780, 151 Calculator

Given Input numbers are 620, 705, 780, 151

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

Divisors of 620

List of positive integer divisors of 620 that divides 620 without a remainder.

1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620

Divisors of 705

List of positive integer divisors of 705 that divides 705 without a remainder.

1, 3, 5, 15, 47, 141, 235, 705

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 151

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

1, 151

Greatest Common Divisior

We found the divisors of 620, 705, 780, 151 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 620, 705, 780, 151 is 1.

Therefore, GCD of numbers 620, 705, 780, 151 is 1

Given Input Data is 620, 705, 780, 151

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

Prime Factorization of 620 is 2 x 2 x 5 x 31

Prime Factorization of 705 is 3 x 5 x 47

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

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(620, 705) = 87420

GCD(620, 705) = ( 620 x 705 ) / 87420

GCD(620, 705) = 437100 / 87420

GCD(620, 705) = 5

Step2:

Here we consider the GCD from the above i.e. 5 as first number and the next as 780

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

LCM(5, 780) = 780

GCD(5, 780) = ( 5 x 780 ) / 780

GCD(5, 780) = 3900 / 780

GCD(5, 780) = 5

Step3:

Here we consider the GCD from the above i.e. 5 as first number and the next as 151

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

LCM(5, 151) = 755

GCD(5, 151) = ( 5 x 151 ) / 755

GCD(5, 151) = 755 / 755

GCD(5, 151) = 1

GCD of 620, 705, 780, 151 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 819, 501, 308, 870
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• GCD of 978, 711, 410, 669

1. What is the GCD of 620, 705, 780, 151?

GCD of 620, 705, 780, 151 is 1

2. Where do I get the detailed procedure to find GCD of 620, 705, 780, 151?

You can find a detailed procedure to find GCD of 620, 705, 780, 151 on our page.

3. How to find GCD of 620, 705, 780, 151 on a calculator?

You can find the GCD of 620, 705, 780, 151 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.