Seems there is possible misunderstanding of "software" definition. Any software written for modern processors are interpreted as some binary code... so it is one astronomical number. Probably there are even more than 9 teenagers "looking for their lucky numbers", but that is not what inventors are trying to patent :D. Look at what large corporations are working on and You will see the picture of what can be patented and what inventions will be valuable in near future. But that is grown-ups field, not teenagers, who can't imagine software startup inventing inventions that could be valuable to others ;).