I know the record is 10^15, but what are we going for? Oh, and am I correct in assuming that each work unit calculates 250 million digits of pi and that the work unit numbers indicate what digit level is being calculated? Lastly, I'm confused about something I read a while back. Is it 10^15 base-10 digits or 10^15 base-2(binary) digits that's been calculated? Base-10 would indicate 3 and 1/3rd times as much work.