What is the longest time term a being can step in need sleep?

I was wondering if anyone be a Doctor or actually know how long a person can jump without sleep minus sustaining any long term glum effectsWhat is the longest time term a being can step in need sleep?
To know for sure, you'd have to examination lots of subjects to the point at which they DO sustain long-term negative effects, and that's not gonna come up.
In college I stayed awake 36 hours to write two term papers. It be hell, sheer hell, and I'm sure that I would keel over from a heart attack if I tried it again.
The longest I've heard of is 11 days - granted, I hear it on the tv show "House".
i heard a hillbilly poem where on earth the man didnt sleep 4 16 days