# Switch act

i have data in excel
67 87.66 44
by using switch activity how to find prime or not and print in column
Number Prime or not
67
87
44
66

You wouldn’t do it with a Switch. You have to loop from 2 to the square root of the number you’re checking, and calculate if it’s prime.

You can look around online to see different examples of code to check if a number is prime.

Also, decimal numbers cannot be prime numbers. Only integers.

Here is code to check if a number is prime. Note that it does not work for 1 or 2. You’d have to check for those values manually with an if.

Make sure to initialize counter (int32) as 2 and isPrime (boolean) as True. numberToCheck is obviously also int32 and you have to set its value for whatever number you want to test for prime.

Hi,

FYI, another approach:

As we can easily know prime numbers below a certain number, we can achieve this as the following, if input number is always below the number.

Sample20220812-2.zip (9.4 KB)

Regards,

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