Not only is my age prime, but it’s a Mersenne prime! Barring some great advances in medical technology it’s the last time I’ll be able to say that.
(What else is interesting about the number 31? It seems like a pretty nondescript age life-wise, so I was hoping for some interesting math at least.)
God plays dice 
Well, 31, 331, 3331, 33331, 333331, 3333331, and 33333331 are all prime, and that’s pretty neat. Also it’s a pentagonal number.