In PowerBall under the 5/50 + 1/20 · since Jun 2018 rules — 867 draws, 1 from 1–20.
40times drawn · chance expected 43 −0.52σ
10draws waiting · a wait this long: 63% for any number
21.0average wait between appearances · chance says 20.0
121longest completed wait · 8% chance of one at least that long
13 is drawn as often as chance explains
Drawn 40 times in 867 draws against 43.4 expected, −0.52σ. Each draw is independent: after 10 draws away it is exactly as likely tonight as a number drawn yesterday.
13
Number 13, draw by draw
Drawn 40 times in 867 draws · average wait 21.0 draws · longest completed wait 121 · waiting 10 draws now
a completed wait — darker is longer the wait still running — a lower bound, not a finished gap
Where it lands in a sorted draw
Sort a draw and 13 has a favourite seat — chance gives a large number the high positions more often. That is the shape of sorting, not of the machine.
Never drawn alongside 19 of the other 19 numbers; chance expects about 19 such strangers by now. Every pair →
How many people play it
Under the crowd model, 13 is picked about 0.92× as often as an indifferent choice — 20th most popular of 20. That changes nothing about whether it comes up, and everything about how many ways a jackpot on it would be shared.
Nothing here predicts the next draw. A number’s history is a record of a fair machine’s past, and the machine keeps none of it: 13 is drawn with probability 1/20 tonight whatever it did last week.