17. I don't want to sound mean, but あなた aren't unique and cool for saying your お気に入り number is 13 または 666. Sorry, but I hate those numbers because 13 WAS my lucky number when I was little, but whenever we had to choose numbers some kid took it cause it was "cool". I got stuck with the number 16 サッカー jersey. FML -_- It's so mainstream too. Speaking of that, have あなた heard this band? Probably not, they're really underground.
17...I was born June 17th my uncle was born on june 17th my 1st teacher was born on june 17th 2 of my best フレンズ moms were born on june 17th...nd my neibor went into labor on june 18th, but gave birth on june 18th..so it's almost a continued tradition. but 17 is my lucky number!
19. I also like 17, but I just 愛 19 because my last 日 at this camp was on August 19th, so 19 is one of my lucky numbers. (the other being 3, 17, 21, and 15.)