Calculating Anti-Primes

[Space_Ghost]

@Space_Ghost : 

Just in case you're not aware of it, I'll mention that in the QB64 IDE under the "Options" menu, then "Compiler Settings" 

a page will be displayed where you can make changes that may (or may not) improve your program execution speed.

The first option : 
>> "Compile program with C++ optimization flag"
is what I'd try first -- (this is basically the same as using -O2 in the "C++ Compiler Flags" box.


Otherwise you could leave the option above unchecked and try the following values in the "C++ Compiler Flags" box.

-O2
-Os
-O3
(Note that this is the letter "O", not a zero.)

I personally find that -Os works better for me in a program that does a lot of repetitive math.

A more detailed description of these and more compiler options can be found here : 
https://doc.ecoscentric.com/gnutools/doc...tions.html

EDIT :
I just wanted to mention that each time the compiler options are changed the QB64 compiler files are purged and rebuilt which means that it will take longer to compile your program the first time, but after that it will take less time to compile (until the compiler settings are changed again).

Thank you Stuart.  This is very helpful!!  Greatly appeciated.
Cheers.