In Mega Millions under the 5/70 + 1/25 · Oct 2017 – Apr 2025 rules — 776 draws, 5 from 1–70 (an earlier era).
55times drawn · chance expected 55 −0.06σ
15draws waiting · a wait this long: 35% for any number
14.0average wait between appearances · chance says 14.0
53longest completed wait · 69% chance of one at least that long
7 is drawn as often as chance explains
Drawn 55 times in 776 draws against 55.4 expected, −0.06σ. Each draw is independent: after 15 draws away it is exactly as likely tonight as a number drawn yesterday.
7
Number 7, draw by draw
Drawn 55 times in 776 draws · average wait 14.0 draws · longest completed wait 53 · waiting 15 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 7 has a favourite seat — chance gives a small number the low positions more often. That is the shape of sorting, not of the machine.
It has shared a draw with every one of the other 69 numbers; chance expected about 3 still unmet by now. Every pair →
How many people play it
Under the crowd model, 7 is picked about 1.54× as often as an indifferent choice — 1st most popular of 70. 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: 7 is drawn with probability 5/70 tonight whatever it did last week.