In Powerball under the 7/35 + 1/20 · since Apr 2018 rules — 444 draws, 1 from 1–20.
26times drawn · chance expected 22 +0.83σ
11draws waiting · a wait this long: 60% for any number
15.3average wait between appearances · chance says 20.0
68longest completed wait · 56% chance of one at least that long
18 is drawn as often as chance explains
Drawn 26 times in 444 draws against 22.2 expected, +0.83σ. Each draw is independent: after 11 draws away it is exactly as likely tonight as a number drawn yesterday.
18
Number 18, draw by draw
Drawn 26 times in 444 draws · average wait 15.3 draws · longest completed wait 68 · waiting 11 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 18 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, 18 is picked about 1.22× as often as an indifferent choice — 14th 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: 18 is drawn with probability 1/20 tonight whatever it did last week.