A custom prime sieve seeks the numbers up to one trillion before it is used to compare the performance of the legendary PDP-11 to the Threadripper. For my book on the spectrum, see: amzn.to/3XLJ8kY

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Primes Project: github.com/PlummersSoftwareLLC/Primes
Sieve Code: github.com/davepl/MACRO-11/tree/main