Number 21

In Lotto under the 6/52 + 1/52 · Aug 2017 – Sep 2025 rules — 847 draws, 6 from 1–52 (an earlier era).

79times drawn · chance expected 98 −2.01σ

0draws waiting — it came up last time

10.7average wait between appearances · chance says 8.7

49longest completed wait · 20% chance of one at least that long

21 is drawn as often as chance explains

Drawn 79 times in 847 draws against 97.7 expected, −2.01σ. Each draw is independent: after 0 draws away it is exactly as likely tonight as a number drawn yesterday. It has also come out as the bonus ball 19 times, counted separately.

Number 21, draw by draw

Drawn 79 times in 847 draws · average wait 10.7 draws · longest completed wait 49 · drawn in the most recent draw

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 smallest7 · chance 5.7
2nd smallest19 · chance 21.2
3rd smallest28 · chance 28.7
4th smallest20 · chance 17.8
5th smallest5 · chance 5.1
6th smallest0 · chance 0.5

Every position’s lane →

The company it keeps

Seen most often with these — chance gives every partner about 7.7 shared draws, and the leaders are simply the ones that came out ahead this time.

14 25 4 7 27 30

It has shared a draw with every one of the other 51 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 52. 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
2025-09-20	2	4th	4 5 14 21 34 52
2025-09-13	49	3rd	12 20 21 22 28 33
2025-03-26	31	3rd	12 18 21 25 27 38
2024-12-04	17	5th

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 6/52 tonight whatever it did last week.

2022-12-21	2	3rd	7 20 21 37 38 46
2022-12-14	17	4th	2 7 20 21 35 46
2022-10-15	17	4th	9 11 13 21 30 46
2022-08-17	2	3rd	5 13 21 34 35 39
2022-08-10	18	3rd	13 14 21 34 45 52
2022-06-08	33	1st	21 25 27 34 39 48
2022-02-12	2	3rd	12 19 21 24 25 39
2022-02-05	5	2nd	4 21 31 33 36 38
2022-01-19	16	3rd	1 14 21 33 37 49
2021-11-20	24	2nd	2 21 23 26 32 42
2021-08-28	7	4th	8 14 16 21 42 47
2021-08-04	15	1st	21 26 27 30 37 51
2021-06-12	24	2nd	7 21 23 30 43 48
2021-03-20	2	3rd	2 14 21 46 49 50
2021-03-13	4	3rd	11 13 21 26 34 50
2021-02-27	2	4th	11 13 14 21 22 32
2021-02-20	3	4th	3 8 16 21 38 41
2021-02-10	3	5th	1 10 12 15 21 42
2021-01-30	4	2nd	6 21 27 32 34 35
2021-01-16	4	1st	21 25 40 42 44 49
2021-01-02	7	3rd	9 11 21 28 35 46
2020-12-09	21	1st	21 30 32 42 44 48
2020-09-26	6	4th	3 7 18 21 27 42
2020-09-05	1	2nd	17 21 23 29 30 39
2020-09-02	1	3rd	9 16 21 28 37 48
2020-08-29	17	3rd	9 16 21 27 33 45
2020-07-01	2	3rd	5 13 21 30 32 41
2020-06-24	23	5th	3 9 14 19 21 24
2020-04-04	17	4th	3 4 10 21 24 43
2020-02-05	8	4th	3 6 20 21 41 45
2020-01-08	23	3rd	14 19 21 43 45 50
2019-10-16	8	4th	7 8 20 21 25 33
2019-09-18	4	2nd	20 21 39 49 50 52
2019-09-04	7	3rd	1 14 21 40 42 44
2019-08-10	10	3rd	6 20 21 26 45 48
2019-07-06	20	2nd	1 21 26 29 38 41
2019-04-27	19	3rd	4 19 21 43 44 51
2019-02-20	6	3rd	6 16 21 27 30 52
2019-01-30	5	1st	21 23 26 38 44 48
2019-01-12	10	5th	4 11 16 18 21 46
2018-12-08	23	4th	3 7 12 21 27 29
2018-09-19	8	4th	7 14 19 21 29 39
2018-08-22	5	3rd	2 3 21 23 41 46
2018-08-04	5	3rd	2 14 21 28 36 42
2018-07-18	25	4th	8 12 17 21 26 46
2018-04-21	6	3rd	13 15 21 26 35 49
2018-03-31	4	2nd	18 21 23 31 35 49
2018-03-17	8	2nd	6 21 26 40 42 44
2018-02-17	4	2nd	9 21 27 32 33 38
2018-02-03	2	4th	6 7 16 21 44 50
2018-01-27	22	4th	6 7 15 21 24 48
2017-11-11	8	2nd	3 21 28 30 46 51
2017-10-14	9	3rd	1 5 21 22 33 44
2017-09-13	3	4th	4 10 19 21 31 49
2017-09-02	—	4th	1 3 4 21 25 30