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4.
This is the IDN number found on the infamous roswell tape of summer of 1947
Roswell investigator: "how useful... its IDN is 4815162342..."
by John Whilsome May 03, 2006
 
1.
1. The only numbers you never, ever want to enter in the lottery.

2. The (apparent) oblique plotline of ABC's hit TV show Lost. These numbers are cursed. Very cursed.

3. "Cursed" toast with these numbers on it, claiming it was linked to the the show Lost that sold for ever $16,000 US.
I entered the numbers '4 8 15 16 23 42' into the lottery. The next day I crapped out my large intestine.
by Op2 June 05, 2005
 
2.
The mysterious numbers from the t.v. show "Lost". The numbers appear everywhere in the show from the co-ordinates of the plane to representing the amount of people on the island.
"enter these numbers: 4 8 15 16 23 42"
4 people left on the raft, 42 stayed behind; there are 23 survivors on the other side of the island ect...
by Fintan October 21, 2005
 
3.
>:4815162342 the wierd number sequence off the greatest tv show ever....LOST! they pop up all over the show and we havnt got a clue what they mean, apart from bringing bad luck. They have to be typed into the hatches computer every 108 minutes.
hurley: "the numbers are bad"

desmond: "4815162342.....every 108 minutes"
by toby barnett April 23, 2006