Trivia Note: The number 47 is
used repeatedly throughout the series. Examples: Marshall
expresses a desire to improve a camera design so that it
has 47 exposures, the key code Will needs to get into a
computer room in order to retrieve data on SD-6 is 4747,
The crate at the Vatican which contains the painting with
Rambaldi's cipher-key has a 5-digit catalog number ending
in 47, page 47 is always significant in a Rambaldi
manuscript, and of course, there are 47 parts to
Rambaldi's magnum opus. In episodes of season 3, Sydney
tries to retrieve memories of when she is abducted, as she
is dreaming... Masked men take her in to a room with the
number 47 largely printed on its doors. Interestingly, the
Star Trek TV shows also feature the number 47 many times
(It's usually seen in their monitors).