In Lottario under the 6/45 + 1/45 · since Sep 2024 rules — 107 draws, 6 from 1–45.
20times drawn · chance expected 14 +1.63σ
7draws waiting · a wait this long: 42% for any number
4.8average wait between appearances · chance says 7.5
14longest completed wait · 96% chance of one at least that long
21 is drawn as often as chance explains
Drawn 20 times in 107 draws against 14.3 expected, +1.63σ. Each draw is independent: after 7 draws away it is exactly as likely tonight as a number drawn yesterday. It has also come out as the bonus ball 2 times, counted separately.
21
Number 21, draw by draw
Drawn 20 times in 107 draws · average wait 4.8 draws · longest completed wait 14 · waiting 7 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 21 has a favourite seat — chance gives a small number the low positions more often. That is the shape of sorting, not of the machine.
Never drawn alongside 6 of the other 44 numbers; chance expects about 5 such strangers by now. Every pair →
How many people play it
Under the crowd model, 21 is picked about 1.22× as often as an indifferent choice — 15th most popular of 45. 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: 21 is drawn with probability 6/45 tonight whatever it did last week.