In Mega Millions under the 5/75 + 1/15 · Oct 2013 – Oct 2017 rules — 420 draws, 5 from 1–75 (an earlier era).
32times drawn · chance expected 28 +0.78σ
4draws waiting · a wait this long: 81% for any number
13.0average wait between appearances · chance says 15.0
38longest completed wait · 92% chance of one at least that long
7 is drawn as often as chance explains
Drawn 32 times in 420 draws against 28.0 expected, +0.78σ. Each draw is independent: after 4 draws away it is exactly as likely tonight as a number drawn yesterday.
7
Number 7, draw by draw
Drawn 32 times in 420 draws · average wait 13.0 draws · longest completed wait 38 · waiting 4 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.
Never drawn alongside 17 of the other 74 numbers; chance expects about 13 such strangers 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 75. 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 5/75 tonight whatever it did last week.