Number 21

In Lotto America under the 5/52 + 1/10 · since Nov 2017 rules — 1,151 draws, 5 from 1–52.

108times drawn · chance expected 111 −0.27σ

0draws waiting — it came up last time

10.5average wait between appearances · chance says 10.4

34longest completed wait · 98% chance of one at least that long

21 is drawn as often as chance explains

Drawn 108 times in 1,151 draws against 110.7 expected, −0.27σ. Each draw is independent: after 0 draws away it is exactly as likely tonight as a number drawn yesterday.

Number 21, draw by draw

Drawn 108 times in 1,151 draws · average wait 10.5 draws · longest completed wait 34 · 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 smallest8 · chance 13.6
2nd smallest42 · chance 38.9
3rd smallest40 · chance 38.2
4th smallest18 · chance 15.3
5th smallest0 · chance 2.1

Every position’s lane →

The company it keeps

Seen most often with these — chance gives every partner about 8.5 shared draws, and the leaders are simply the ones that came out ahead this time.

42 45 12 32 48 8

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
2026-10-10	3	4th	1 9 16 21 23
2026-10-03	6	3rd	12 13 21 40 49
2026-09-19	6	2nd	14 21 24 27 44
2026-09-05	26	2nd	20 21 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 5/52 tonight whatever it did last week.

2025-03-22	4	2nd	6 21 43 47 52
2025-03-12	6	3rd	4 17 21 28 48
2025-02-26	1	3rd	8 11 21 27 39
2025-02-24	10	2nd	1 21 30 35 41
2025-02-01	2	3rd	14 15 21 35 52
2025-01-27	10	3rd	3 7 21 33 45
2025-01-04	5	4th	1 3 17 21 34
2024-12-23	29	2nd	4 21 28 42 52
2024-10-16	23	3rd	2 16 21 33 52
2024-08-24	2	3rd	3 19 21 28 32
2024-08-19	6	2nd	16 21 41 48 49
2024-08-05	1	2nd	13 21 29 33 38
2024-08-03	10	3rd	5 10 21 42 43
2024-07-10	1	2nd	6 21 25 42 51
2024-07-08	4	2nd	5 21 22 40 46
2024-06-29	4	3rd	10 15 21 22 42
2024-06-19	30	2nd	19 21 24 44 51
2024-04-10	15	3rd	2 15 21 33 47
2024-03-06	4	2nd	20 21 24 40 42
2024-02-26	7	1st	21 30 36 38 49
2024-02-10	14	4th	1 3 18 21 42
2024-01-08	29	2nd	12 21 37 39 45
2023-11-01	4	3rd	6 19 21 26 29
2023-10-23	9	1st	21 27 28 32 51
2023-10-02	2	3rd	4 5 21 36 51
2023-09-27	8	1st	21 22 25 46 50
2023-09-09	6	3rd	5 15 21 22 33
2023-08-26	22	2nd	8 21 38 43 51
2023-07-05	12	2nd	9 21 38 39 48
2023-06-07	2	3rd	9 12 21 22 26
2023-06-03	20	3rd	9 14 21 22 48
2023-04-17	11	3rd	10 13 21 23 30
2023-03-22	16	3rd	14 18 21 50 51
2023-02-13	4	3rd	2 17 21 22 26
2023-02-04	8	4th	8 17 18 21 52
2023-01-16	8	3rd	7 20 21 27 52
2022-12-28	6	3rd	2 10 21 44 45
2022-12-14	6	2nd	18 21 22 30 32
2022-11-30	3	2nd	12 21 35 42 45
2022-11-23	5	2nd	12 21 29 35 42
2022-11-12	16	3rd	8 20 21 26 38
2022-10-05	4	2nd	14 21 37 38 47
2022-09-26	24	1st	21 22 24 46 51
2022-08-01	8	1st	21 24 42 48 51
2022-07-13	14	3rd	1 18 21 26 39
2022-05-25	1	4th	5 11 17 21 49
2022-05-21	27	2nd	11 21 29 32 46
2022-02-16	16	4th	14 15 17 21 25
2021-12-22	15	3rd	5 20 21 33 41
2021-10-30	8	3rd	10 18 21 47 48
2021-10-02	14	2nd	2 21 45 49 50
2021-08-14	1	3rd	8 19 21 35 45
2021-08-11	22	2nd	8 21 22 32 34
2021-05-26	9	3rd	4 14 21 31 40
2021-04-24	7	3rd	5 20 21 26 27
2021-03-31	21	3rd	17 18 21 35 42
2021-01-16	1	3rd	6 16 21 30 36
2021-01-13	8	2nd	8 21 24 29 32
2020-12-16	26	2nd	18 21 32 35 48
2020-09-16	13	3rd	12 15 21 48 52
2020-08-01	13	2nd	12 21 29 40 44
2020-06-17	21	3rd	12 19 21 26 48
2020-04-04	4	2nd	18 21 30 35 47
2020-03-21	14	2nd	5 21 26 47 50
2020-02-01	3	4th	1 6 8 21 23
2020-01-22	3	4th	4 6 11 21 23
2020-01-11	28	2nd	1 21 25 30 34
2019-10-05	10	3rd	1 3 21 25 32
2019-08-31	5	3rd	14 15 21 45 46
2019-08-14	4	2nd	15 21 35 45 52
2019-07-31	31	3rd	4 13 21 41 46
2019-04-13	7	1st	21 23 27 31 37
2019-03-20	7	2nd	4 21 22 38 42
2019-02-23	1	3rd	6 10 21 25 48
2019-02-20	10	4th	12 15 16 21 46
2019-01-16	18	2nd	3 21 42 45 51
2018-11-14	1	2nd	14 21 28 30 45
2018-11-10	7	3rd	10 17 21 26 45
2018-10-17	32	4th	3 8 15 21 37
2018-06-27	4	2nd	17 21 24 37 50
2018-06-13	9	3rd	3 17 21 35 42
2018-05-12	17	4th	8 9 10 21 33
2018-03-14	3	2nd	8 21 38 50 51
2018-03-03	—	2nd	6 21 30 32 45