GCD of 155, 987, 997, 253 Calculator

Given Input numbers are 155, 987, 997, 253

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

Divisors of 155

List of positive integer divisors of 155 that divides 155 without a remainder.

1, 5, 31, 155

Divisors of 987

List of positive integer divisors of 987 that divides 987 without a remainder.

1, 3, 7, 21, 47, 141, 329, 987

Divisors of 997

List of positive integer divisors of 997 that divides 997 without a remainder.

1, 997

Divisors of 253

List of positive integer divisors of 253 that divides 253 without a remainder.

1, 11, 23, 253

Greatest Common Divisior

We found the divisors of 155, 987, 997, 253 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 155, 987, 997, 253 is 1.

Therefore, GCD of numbers 155, 987, 997, 253 is 1

Given Input Data is 155, 987, 997, 253

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

Prime Factorization of 155 is 5 x 31

Prime Factorization of 987 is 3 x 7 x 47

Prime Factorization of 997 is 997

Prime Factorization of 253 is 11 x 23

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(155, 987) = 152985

GCD(155, 987) = ( 155 x 987 ) / 152985

GCD(155, 987) = 152985 / 152985

GCD(155, 987) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 997

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

LCM(1, 997) = 997

GCD(1, 997) = ( 1 x 997 ) / 997

GCD(1, 997) = 997 / 997

GCD(1, 997) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 253

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

LCM(1, 253) = 253

GCD(1, 253) = ( 1 x 253 ) / 253

GCD(1, 253) = 253 / 253

GCD(1, 253) = 1

GCD of 155, 987, 997, 253 is 1

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1. What is the GCD of 155, 987, 997, 253?

GCD of 155, 987, 997, 253 is 1

2. Where do I get the detailed procedure to find GCD of 155, 987, 997, 253?

You can find a detailed procedure to find GCD of 155, 987, 997, 253 on our page.

3. How to find GCD of 155, 987, 997, 253 on a calculator?

You can find the GCD of 155, 987, 997, 253 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.