Thanks for the encouragement, hhh. On Wednesday I sent you a spec for a sieve wrapper program. As of now I've written about 500 lines of code. Most of the major components of the sieve wrapper are finished and seem to be working.

With the components working, I am testing the main program body, to see if it loops properly (detects done ranges, uploads factors, and starts a new range).

After that, there's some cleanup work, and the program will be available for review.

Cheers