Thats the number of the actual bill passed into law today. Here's the title:
A bill to provide authority for the Federal Government to purchase and insure certain types of troubled assets for the purposes of providing stability to and preventing disruption in the economy and financial system and protecting taxpayers, to amend the Internal Revenue Code of 1986 to provide incentives for energy production and conservation, to extend certain expiring provisions, to provide individual income tax relief, and for other purposes.
The bill itself had been around for a while and apparently served as a vehicle for the proposal introduced to Congress by Bush and Paulsen.
Here's a link to the bill summary in Thomas.
