Number 21

In Powerball under the 7/35 + 1/20 · since Apr 2018 rules — 443 draws, 7 from 1–35.

85times drawn · chance expected 89 −0.43σ

6draws waiting · a wait this long: 33% for any number

5.0average wait between appearances · chance says 5.0

18longest completed wait · 85% chance of one at least that long

21 is drawn as often as chance explains

Drawn 85 times in 443 draws against 88.6 expected, −0.43σ. Each draw is independent: after 6 draws away it is exactly as likely tonight as a number drawn yesterday.

Number 21, draw by draw

Drawn 85 times in 443 draws · average wait 5.0 draws · longest completed wait 18 · waiting 6 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 large number the high positions more often. That is the shape of sorting, not of the machine.

1st smallest1 · chance 0.2
2nd smallest1 · chance 2.5
3rd smallest12 · chance 12.0
4th smallest24 · chance 26.2
5th smallest32 · chance 27.9
6th smallest15 · chance 13.7
7th smallest0 · chance 2.4

Every position’s lane →

The company it keeps

Seen most often with these — chance gives every partner about 15.0 shared draws, and the leaders are simply the ones that came out ahead this time.

30 10 12 13 14 28

It has shared a draw with every one of the other 34 numbers; chance expected about 0.0 still unmet 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 35. 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
2026-08-27	10	4th	3 13 17 21 23 28 34
2026-06-18	7	4th	1 6 20 21 26 28 29
2026-04-30	11	5th	4 13 16 17 21 24 27

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 7/35 tonight whatever it did last week.

2024-04-11	11	4th	4 6 20 21 24 25 30
2024-01-25	1	5th	1 4 6 9 21 26 27
2024-01-18	2	3rd	17 20 21 22 24 31 34
2024-01-04	12	1st	21 22 27 30 31 33 34
2023-10-12	8	5th	1 6 10 20 21 31 35
2023-08-17	10	4th	10 12 17 21 24 26 30
2023-06-08	9	5th	12 15 17 20 21 22 28
2023-04-06	5	4th	6 12 17 21 24 30 33
2023-03-02	2	6th	13 14 16 18 19 21 29
2023-02-16	2	6th	5 8 12 13 20 21 35
2023-02-02	1	4th	2 7 15 21 24 31 35
2023-01-26	1	3rd	1 15 21 28 30 31 33
2023-01-19	2	3rd	3 19 21 30 32 34 35
2023-01-05	2	5th	5 7 9 13 21 27 35
2022-12-22	1	4th	5 7 18 21 23 28 31
2022-12-15	1	4th	1 7 19 21 22 26 34
2022-12-08	11	6th	4 10 14 18 19 21 35
2022-09-22	2	3rd	10 15 21 24 26 28 35
2022-09-08	5	3rd	13 15 21 23 25 30 31
2022-08-04	9	5th	6 11 13 17 21 23 32
2022-06-02	1	5th	6 8 11 15 21 31 33
2022-05-26	9	5th	10 13 16 19 21 25 33
2022-03-24	7	4th	4 5 9 21 23 28 32
2022-02-03	10	4th	11 16 18 21 22 26 31
2021-11-25	9	5th	3 9 16 17 21 22 34
2021-09-23	6	5th	3 8 10 14 21 23 24
2021-08-12	1	5th	4 10 17 19 21 23 26
2021-08-05	6	6th	7 10 11 12 16 21 25
2021-06-24	7	3rd	8 13 21 28 30 31 33
2021-05-06	2	4th	10 14 16 21 23 25 34
2021-04-22	2	4th	10 17 19 21 26 31 35
2021-04-08	2	6th	3 4 12 13 14 21 24
2021-03-25	2	6th	10 12 14 15 16 21 25
2021-03-11	11	6th	1 8 14 17 19 21 26
2020-12-24	3	5th	4 9 11 12 21 29 32
2020-12-03	1	5th	1 12 15 17 21 28 29
2020-11-26	3	4th	3 7 20 21 25 30 31
2020-11-05	11	5th	2 3 13 14 21 24 35
2020-08-20	6	5th	8 12 17 18 21 23 35
2020-07-09	1	2nd	2 21 26 28 31 32 33
2020-07-02	5	6th	1 6 10 15 16 21 26
2020-05-28	9	3rd	9 10 21 24 25 30 32
2020-03-26	5	5th	1 12 14 16 21 27 29
2020-02-20	5	5th	1 3 12 13 21 26 31
2020-01-16	2	5th	7 14 16 20 21 25 28
2020-01-02	5	4th	2 3 9 21 25 27 35
2019-11-28	3	5th	4 12 18 20 21 23 30
2019-11-07	3	6th	3 7 10 12 13 21 33
2019-10-17	9	5th	2 6 7 9 21 22 25
2019-08-15	5	3rd	7 14 21 24 27 30 35
2019-07-11	1	4th	6 7 8 21 27 28 34
2019-07-04	1	4th	2 15 20 21 22 27 28
2019-06-27	10	4th	2 7 17 21 27 32 35
2019-04-18	2	6th	1 2 4 11 17 21 30
2019-04-04	6	5th	2 12 14 16 21 25 33
2019-02-21	1	5th	3 4 12 16 21 25 27
2019-02-14	18	5th	3 6 10 11 21 23 34
2018-10-11	1	3rd	13 20 21 23 27 30 32
2018-10-04	1	3rd	3 11 21 22 24 28 32
2018-09-27	3	5th	5 10 15 19 21 22 30
2018-09-06	—	4th	7 14 18 21 23 25 27