Number 31

In Lotto America under the 5/52 + 1/10 · since Nov 2017 rules — 1,152 draws, 5 from 1–52.

117times drawn · chance expected 111 +0.62σ

7draws waiting · a wait this long: 55% for any number

9.9average wait between appearances · chance says 10.4

31longest completed wait · >99% chance of one at least that long

31 is drawn as often as chance explains

Drawn 117 times in 1,152 draws against 110.8 expected, +0.62σ. Each draw is independent: after 7 draws away it is exactly as likely tonight as a number drawn yesterday.

Number 31, draw by draw

Drawn 117 times in 1,152 draws · average wait 9.9 draws · longest completed wait 31 · waiting 7 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 31 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 smallest4 · chance 2.8
2nd smallest17 · chance 18.7
3rd smallest42 · chance 42.8
4th smallest35 · chance 39.9
5th smallest19 · chance 12.8

Every position’s lane →

The company it keeps

Seen most often with these — chance gives every partner about 9.2 shared draws, and the leaders are simply the ones that came out ahead this time.

8 14 39 18 22 23

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, 31 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 31 →

Every draw it appeared in

Date	Wait	Position	The draw
2026-09-26	16	3rd	22 27 31 49 51
2026-08-19	5	2nd	23 31 40 41 45
2026-08-08	8	3rd	3 30 31 34 50
2026-07-20	5	2nd	23 31 34

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: 31 is drawn with probability 5/52 tonight whatever it did last week.

2025-08-02	2	4th	7 16 22 31 39
2025-07-28	9	5th	8 12 23 25 31
2025-07-07	10	4th	8 18 27 31 41
2025-06-14	10	4th	19 22 26 31 51
2025-05-21	11	5th	1 14 15 19 31
2025-04-26	21	4th	1 9 14 31 34
2025-03-08	11	3rd	1 30 31 36 43
2025-02-10	7	4th	7 10 13 31 50
2025-01-25	21	2nd	8 31 35 44 46
2024-12-07	12	3rd	7 14 31 44 46
2024-11-09	11	2nd	14 31 34 41 48
2024-10-14	8	3rd	6 25 31 43 51
2024-09-25	9	4th	5 10 13 31 52
2024-09-04	18	5th	7 9 28 30 31
2024-07-24	17	3rd	8 11 31 36 40
2024-06-15	20	2nd	26 31 32 36 49
2024-04-29	4	3rd	3 14 31 32 50
2024-04-20	10	5th	6 11 14 15 31
2024-03-27	4	4th	9 22 30 31 34
2024-03-18	12	4th	19 23 24 31 44
2024-02-19	3	3rd	4 14 31 37 41
2024-02-12	9	4th	13 14 22 31 52
2024-01-22	8	3rd	18 22 31 39 50
2024-01-03	8	3rd	10 17 31 47 51
2023-12-16	30	5th	13 14 23 25 31
2023-10-07	5	3rd	5 22 31 35 47
2023-09-25	17	3rd	19 23 31 38 52
2023-08-16	1	3rd	14 18 31 37 43
2023-08-14	21	3rd	1 26 31 33 50
2023-06-26	23	2nd	3 31 33 34 38
2023-05-03	1	3rd	8 9 31 43 44
2023-05-01	3	4th	2 17 20 31 45
2023-04-24	17	5th	6 8 15 16 31
2023-03-15	3	1st	31 36 43 45 52
2023-03-08	6	4th	3 7 29 31 49
2023-02-22	31	4th	6 24 25 31 38
2022-12-12	1	3rd	3 23 31 33 51
2022-12-10	6	4th	2 17 29 31 43
2022-11-26	14	3rd	1 27 31 46 52
2022-10-24	15	4th	17 19 22 31 52
2022-09-19	18	2nd	12 31 45 47 48
2022-08-08	6	4th	2 15 17 31 48
2022-07-25	21	2nd	26 31 37 48 52
2022-05-18	7	4th	8 18 24 31 46
2022-04-23	16	3rd	6 15 31 43 46
2022-02-26	6	3rd	5 13 31 39 48
2022-02-05	1	4th	2 4 22 31 35
2022-02-02	1	5th	2 8 18 25 31
2022-01-29	12	5th	5 19 23 30 31
2021-12-18	9	3rd	15 25 31 45 46
2021-11-17	14	3rd	6 30 31 40 50
2021-09-29	19	2nd	13 31 32 45 46
2021-07-24	15	5th	7 8 12 25 31
2021-06-02	2	1st	31 34 36 45 50
2021-05-26	4	4th	4 14 21 31 40
2021-05-12	18	3rd	12 30 31 46 48
2021-03-10	5	3rd	4 15 31 36 39
2021-02-20	3	4th	7 18 26 31 39
2021-02-10	26	5th	7 13 20 22 31
2020-11-11	1	4th	8 13 30 31 48
2020-11-07	8	4th	7 8 27 31 41
2020-10-10	10	5th	2 10 19 26 31
2020-09-05	3	3rd	6 10 31 39 42
2020-08-26	5	5th	5 16 22 24 31
2020-08-08	8	4th	11 14 29 31 48
2020-07-11	12	5th	3 12 22 26 31
2020-05-30	6	3rd	3 17 31 41 45
2020-05-09	1	2nd	17 31 32 34 50
2020-05-06	11	3rd	18 25 31 35 42
2020-03-28	20	4th	2 5 19 31 33
2020-01-18	3	3rd	5 7 31 41 43
2020-01-08	3	3rd	1 11 31 38 49
2019-12-28	16	2nd	9 31 45 47 51
2019-11-02	4	3rd	1 10 31 40 50
2019-10-19	17	4th	3 11 27 31 40
2019-08-21	19	3rd	9 25 31 34 37
2019-06-15	18	5th	4 12 23 24 31
2019-04-13	22	4th	21 23 27 31 37
2019-01-26	14	4th	4 11 23 31 35
2018-12-08	11	4th	8 19 24 31 41
2018-10-31	8	3rd	18 19 31 32 48
2018-10-03	9	3rd	1 14 31 36 40
2018-09-01	7	4th	1 8 14 31 39
2018-08-08	5	4th	3 20 28 31 37
2018-07-21	2	2nd	17 31 42 45 50
2018-07-14	1	3rd	6 9 31 37 51
2018-07-11	10	4th	9 22 24 31 38
2018-06-06	3	3rd	19 28 31 39 51
2018-05-26	2	3rd	23 30 31 38 39
2018-05-19	5	5th	4 8 17 25 31
2018-05-02	27	5th	8 18 19 30 31
2018-01-27	21	1st	31 34 45 49 52
2017-11-15	—	4th	2 9 18 31 39