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Calculating Prime Numbers using Perl

Definition of a prime number: A prime number is defined by any number that is only dividable by 1 or itself. Except for 2 which is a prime, a prime number is always odd (2n+1) Here is a Perl script which outputs all the prime numbers between 0 and 10000: #!/usr/bin/perl my $UPPER = 10000; my $sieve = “”; print “2n”; for (my $guess = 3; $guess < = $UPPER; $guess+=2) { next if vec($sieve,$guess,1); print "$guessn"; for (my $mults = $guess * $guess; $mults