The Super Bowl has been played for 45 years (Super Bowl XLV). XLV is Roman Numerals for 45.
46 Super Bowls have been held as of 2012. The 47th will take place in New Orleans, Louisiana on February 3, 2013.
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The saints are going to their first superbowl this year
The Vikings played the Super Bowl in 1970, 1974, 1975, and 1977.