i just totally guessed the code to open the door to the room with the big
fraggin gun, on my second go  at completing doom3 - i gave up the first time
cause i was in a hurry to move on,
still could nt find the pda with it so i just tried gessing, stuff like 666,
777, 911, 1x4x9, 101 - all the obvious techie stuff, then ithought ah those
bastards havent even set a code but then i remebered sumthing about prime
numbers from the film contact ok i thought just one more go - 9 3 1 ahh....

useless trivia does pay off sumtimes!