Well I didn't sleep for 100+ hours during my university exams. I had no alternative! Felt sleepy at nights, but that was the time I actually studied, and during the day I would not be in the mood to sleep!
However if dozing out for a 2-3 minutes counts then, I would not know how many hours should I mention.
--------------------------------------------------------------------------- Father of Monkey007
Ratchet_Expert: "You are acting as if you are godlike!" HonestGamer: "Godlike my son, is an out-and-out understatement!"
My longest was around 4 days without sleep. After it i had just 4 hours and had to work 2 days again. Just was not able to sleep no idea why. (was in hotel)