No the author came up with it at a museum !
if you're referring to the Hannah Baker in Jay Asher's 13 Reasons Why, then the answer is no. Hannah Baker is not a real character.
13 Reasons Why is not out yet
What happen between Hannah and justin in the book 13 reasons why
there are 13 reasons
42
13 reasons why
The Real World - 1992 Paris Part 13 13-13 was released on: USA: 19 August 2003
There are two roots, both real: -13 and +13
Rationalizing
Real Orange - 1997 - 2012-06-13 was released on: USA: 13 June 2012
Real Orange - 1997 2012-06-13 was released on: USA: 13 June 2012
no, it is no. the number 13 is a real number. It is not imaginary.