GCD of 290, 647, 157, 840 Calculator

Given Input numbers are 290, 647, 157, 840

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

Divisors of 290

List of positive integer divisors of 290 that divides 290 without a remainder.

1, 2, 5, 10, 29, 58, 145, 290

Divisors of 647

List of positive integer divisors of 647 that divides 647 without a remainder.

1, 647

Divisors of 157

List of positive integer divisors of 157 that divides 157 without a remainder.

1, 157

Divisors of 840

List of positive integer divisors of 840 that divides 840 without a remainder.

1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840

Greatest Common Divisior

We found the divisors of 290, 647, 157, 840 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 290, 647, 157, 840 is 1.

Therefore, GCD of numbers 290, 647, 157, 840 is 1

Given Input Data is 290, 647, 157, 840

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

Prime Factorization of 290 is 2 x 5 x 29

Prime Factorization of 647 is 647

Prime Factorization of 157 is 157

Prime Factorization of 840 is 2 x 2 x 2 x 3 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(290, 647) = 187630

GCD(290, 647) = ( 290 x 647 ) / 187630

GCD(290, 647) = 187630 / 187630

GCD(290, 647) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 157

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

LCM(1, 157) = 157

GCD(1, 157) = ( 1 x 157 ) / 157

GCD(1, 157) = 157 / 157

GCD(1, 157) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 840

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

LCM(1, 840) = 840

GCD(1, 840) = ( 1 x 840 ) / 840

GCD(1, 840) = 840 / 840

GCD(1, 840) = 1

GCD of 290, 647, 157, 840 is 1

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1. What is the GCD of 290, 647, 157, 840?

GCD of 290, 647, 157, 840 is 1

2. Where do I get the detailed procedure to find GCD of 290, 647, 157, 840?

You can find a detailed procedure to find GCD of 290, 647, 157, 840 on our page.

3. How to find GCD of 290, 647, 157, 840 on a calculator?

You can find the GCD of 290, 647, 157, 840 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.