Here's a code snippet for a program that counts primes in the range you specify in python.
When you want to count primes like in the image, or when you want to count primes to calm yourself down, you'll want to make sure the prime numbers are correct (?).
This is a formatted code that I wrote while solving a little puzzle (CTF).
I wrote it in a reusable form as a function, so feel free to modify it if you want.
I do not use any libraries such as Numpy in python.
get_primelist is a function that counts prime numbers from 2 to upper.
It returns an array of prime numbers from 2 to upper.
def get_primelist(upper): result =  for cp in range ( 2, upper + 1 ): for i in range ( 2, cp ): if ( cp % i == 0 ): break else: result.append(cp) return result # RUN to create an array of the prime numbers # [ 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, # 43,47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97 ] print (get_primelist(100))
Even with a very simple program, you can quickly calculate the range from 2 to 100,000, so if you don't want speed, you don't have to tune it as hard as you would like.
The following table shows the estimated time for the calculation within a practical time.
On Linux, it is the time to display the result of the command
|Width of primes to calculate||time (average of 3 runs)|
I think you can get more complete and quicker prime numbers if you use a proper math library or something. I may add articles using the library in the future.
I'd like to add a slightly improved version, like sifting eratosthenes and cutting branches, if I have time.
Thank you for your message.
Sorry. The Error has occurred.We apologize for the inconvenience.Please try again in a few minutes or contact us via DM below.Twitter:@NodachiSoft_engName:
Send the following information to us. If you are happy with your submission, please click "Send". If you want to modify it, please click "Back".Name: