Number 31

In Lotto Strike under the 4/45 · since Oct 2019 rules — 1,215 draws, 4 from 1–45.

97times drawn · chance expected 108 −1.11σ

4draws waiting · a wait this long: 76% for any number

12.5average wait between appearances · chance says 11.3

60longest completed wait · 33% chance of one at least that long

31 is drawn as often as chance explains

Drawn 97 times in 1,215 draws against 108.0 expected, −1.11σ. Each draw is independent: after 4 draws away it is exactly as likely tonight as a number drawn yesterday.

Number 31, draw by draw

Drawn 97 times in 1,215 draws · average wait 12.5 draws · longest completed wait 60 · waiting 4 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 smallest3 · chance 2.7
2nd smallest17 · chance 20.0
3rd smallest48 · chance 44.6
4th smallest29 · chance 29.7

Every position’s lane →

The company it keeps

Seen most often with these — chance gives every partner about 6.6 shared draws, and the leaders are simply the ones that came out ahead this time.

42 1 13 25 2 21

It has shared a draw with every one of the other 44 numbers; chance expected about 0.1 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 45. 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
2026-10-05	8	4th	15 22 24 31
2026-09-21	3	4th	14 17 30 31
2026-09-16	4	3rd	13 18 31 37
2026-09-09	5	3rd	21 27 31 33
2026-08-31	9	4th

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 4/45 tonight whatever it did last week.

2025-08-27	12	3rd	12 15 31 42
2025-08-06	5	3rd	20 28 31 32
2025-07-28	40	3rd	22 25 31 36
2025-05-19	1	2nd	13 31 38 40
2025-05-17	31	1st	31 37 40 44
2025-03-24	19	4th	1 2 16 31
2025-02-19	8	3rd	1 17 31 39
2025-02-05	13	4th	2 6 9 31
2025-01-13	10	2nd	25 31 37 42
2024-12-27	22	2nd	28 31 35 41
2024-11-18	3	3rd	22 28 31 41
2024-11-13	60	3rd	4 19 31 34
2024-07-31	6	4th	2 17 23 31
2024-07-20	10	4th	23 29 30 31
2024-07-03	29	4th	21 25 30 31
2024-05-11	10	4th	17 20 21 31
2024-04-17	7	2nd	1 31 42 44
2024-04-01	3	4th	4 5 30 31
2024-03-25	18	3rd	4 11 31 35
2024-02-12	5	1st	31 32 37 43
2024-01-31	22	3rd	4 26 31 34
2023-12-11	10	4th	11 23 28 31
2023-11-18	14	4th	7 8 26 31
2023-10-16	6	3rd	20 25 31 41
2023-10-02	21	3rd	6 14 31 40
2023-08-14	36	4th	4 8 25 31
2023-05-22	3	2nd	12 31 42 45
2023-05-15	13	2nd	12 31 36 37
2023-04-15	28	4th	4 16 23 31
2023-02-08	3	2nd	28 31 38 40
2023-02-01	13	3rd	1 8 31 44
2023-01-02	8	3rd	6 10 31 42
2022-12-14	8	3rd	23 29 31 42
2022-11-26	3	4th	12 14 29 31
2022-11-19	1	3rd	9 23 31 43
2022-11-16	29	3rd	20 21 31 38
2022-09-10	1	3rd	2 11 31 45
2022-09-07	19	2nd	25 31 38 44
2022-07-25	18	3rd	14 22 31 36
2022-06-13	5	2nd	2 31 35 37
2022-06-01	23	4th	5 8 15 31
2022-04-09	16	3rd	1 19 31 40
2022-03-02	3	3rd	15 27 31 42
2022-02-23	18	3rd	13 20 31 37
2022-01-12	8	3rd	15 22 31 37
2021-12-25	9	3rd	6 21 31 42
2021-12-04	23	2nd	8 31 39 44
2021-10-11	15	3rd	18 26 31 41
2021-09-06	2	3rd	1 30 31 32
2021-09-01	13	3rd	13 25 31 43
2021-08-02	27	3rd	7 11 31 40
2021-05-31	10	4th	6 19 29 31
2021-05-08	3	3rd	2 4 31 41
2021-05-01	3	4th	5 14 22 31
2021-04-24	9	2nd	8 31 32 44
2021-04-03	27	2nd	1 31 39 41
2021-01-30	10	4th	3 20 30 31
2021-01-06	16	3rd	26 29 31 35
2020-11-30	16	2nd	13 31 38 42
2020-10-24	13	3rd	3 30 31 38
2020-09-23	4	4th	1 5 6 31
2020-09-14	1	3rd	16 23 31 43
2020-09-12	11	3rd	12 28 31 39
2020-08-17	19	4th	10 20 22 31
2020-07-04	22	2nd	17 31 33 42
2020-05-13	33	2nd	9 31 33 38
2020-02-26	7	3rd	12 26 31 45
2020-02-10	2	2nd	10 31 35 45
2020-02-05	6	3rd	1 25 31 45
2020-01-22	12	4th	2 13 23 31
2019-12-25	5	3rd	2 28 31 40
2019-12-14	12	1st	31 34 39 40
2019-11-16	—	3rd	11 22 31 32