Number 21

In Atlantic 49 under the 6/49 + 1/49 · since Sep 2025 rules — 108 draws, 6 from 1–49.

15times drawn · chance expected 13 +0.52σ

10draws waiting · a wait this long: 31% for any number

6.7average wait between appearances · chance says 8.2

18longest completed wait · 80% chance of one at least that long

21 is drawn as often as chance explains

Drawn 15 times in 108 draws against 13.2 expected, +0.52σ. Each draw is independent: after 10 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.

Number 21, draw by draw

Drawn 15 times in 108 draws · average wait 6.7 draws · longest completed wait 18 · 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 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.

1st smallest1 · chance 0.9
2nd smallest5 · chance 3.6
3rd smallest1 · chance 5.5
4th smallest7 · chance 3.8
5th smallest1 · chance 1.2
6th smallest0 · chance 0.1

Every position’s lane →

The company it keeps

Seen most often with these — chance gives every partner about 1.6 shared draws, and the leaders are simply the ones that came out ahead this time.

25 26 42 5 13 17

Never drawn alongside 12 of the other 48 numbers; chance expects about 10 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 49. That changes nothing about whether it comes up, and everything about how many ways a jackpot on it would be shared.

Numbers 1–31 — the birthday zone ×1.22

The model and its sources → · What people believe about 21 →

Every draw it appeared in

Date	Wait	Position	The draw
2026-09-05	6	4th	3 4 16 21 23 26
2026-08-15	4	1st	21 25 26 27 29 32
2026-08-01	10	2nd	17 21 25 28 38 47
2026-06-27	3	4th

What this cannot tell you

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 6/49 tonight whatever it did last week.