Number 31

In Lotto under the 6/42 · since Aug 2020 rules — 642 draws, 6 from 1–42.

90times drawn · chance expected 92 −0.19σ

9draws waiting · a wait this long: 29% for any number

7.0average wait between appearances · chance says 7.0

21longest completed wait · 98% chance of one at least that long

31 is drawn as often as chance explains

Drawn 90 times in 642 draws against 91.7 expected, −0.19σ. Each draw is independent: after 9 draws away it is exactly as likely tonight as a number drawn yesterday.

Number 31, draw by draw

Drawn 90 times in 642 draws · average wait 7.0 draws · longest completed wait 21 · waiting 9 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 smallest0 · chance 0.1
2nd smallest3 · chance 1.2
3rd smallest8 · chance 8.6
4th smallest25 · chance 26.8
5th smallest30 · chance 36.2
6th smallest24 · chance 17.1

Every position’s lane →

The company it keeps

Seen most often with these — chance gives every partner about 11.0 shared draws, and the leaders are simply the ones that came out ahead this time.

35 1 8 29 17 16

It has shared a draw with every one of the other 41 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 42. 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
2026-09-09	5	5th	13 14 26 30 31 32
2026-08-22	2	6th	1 4 7 12 24 31
2026-08-15	20	6th	13 17 19 26 29 31
2026-06-06	6	3rd	4

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 6/42 tonight whatever it did last week.

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