Baron:
You could simply set a 100% fatality rate, with 0% incapacitation. All infected people would die at the end of the turn, ending the "plague".
Even with a neutron bomb, not everyone will recieve an instantly-lethal dose, though... most would end up suffering a longer and more painful death at the outer edges of the bLast's kill zone.
It also allows for medical personnel to save some of the people. (Presumably the ones with the smallest doses)
Left untreated, more would die from survivable doses of radiation/toxin/plague.
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As for the number of digits in the code, definitely the dec/hex would require fewer digits to get an appropriate level of variation.
Computers are great at number crunching, though, and the optimum number of digits would depend on how efficient the implementation is
[ May 08, 2004, 03:57: Message edited by: Suicide Junkie ]