alt Hacker News1 in 4.72 × 10²⁸
1 in 47.3 octillion.
i'd be suspecting a race condition or some other naive mistake, otherwise id be stocking up on lottery tickets.
(lol at the other user posting at the same time about the lottery ticket.. great minds and all that.)
I've always looked at it the the other way - being that lucky would mean you have even less chance of something else lucky happening, good time to save your money