A question for all you programmers out there

[cloud1161]

How long was the longest program you have written from scratch?  I am just curious because I am doing a school project and I am nearing 1000 lines of code (currently at 932, but I know 1000 will be passed soon).  The only reason I ask is because until this point the longest code I've written was maybe 350 and I had about a month and a half to do that.  My current professor gave us two weeks to do this like it was no big deal.  I know there's programs out there that probably have over 10,000 lines of code, but I am just curious what others have done and in what language.  I've done mine in C.