Prime numbers calculated by PERL/CGI script

This program prints out all the prime numbers <= n
Enter an integer n as an upper limit:



See the script of the primes.cgi PERL/CGI statements, which illustrates many techniques and strategies.


     April 2018       
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22 23 _2_4 25 26 27 28  
29 30                 
                      


      May 2018        
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13 14 15 16 17 18 19  
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27 28 29 30 31