Number 31

In Idaho Cash under the 5/45 · since Mar 2017 rules — 2,026 draws, 5 from 1–45.

220times drawn · chance expected 225 −0.36σ

1draws waiting · a wait this long: >99% for any number

9.2average wait between appearances · chance says 9.0

45longest completed wait · 71% chance of one at least that long

31 is drawn as often as chance explains

Drawn 220 times in 2,026 draws against 225.1 expected, −0.36σ. Each draw is independent: after 1 draws away it is exactly as likely tonight as a number drawn yesterday.

Number 31, draw by draw

Drawn 220 times in 2,026 draws · average wait 9.2 draws · longest completed wait 45 · waiting 1 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 smallest2 · chance 1.6
2nd smallest25 · chance 17.7
3rd smallest70 · chance 64.2
4th smallest76 · chance 92.1
5th smallest47 · chance 44.4

Every position’s lane →

The company it keeps

Seen most often with these — chance gives every partner about 20.0 shared draws, and the leaders are simply the ones that came out ahead this time.

39 11 22 9 12 41

It has shared a draw with every one of the other 44 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 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
2026-10-11	1	4th	1 3 20 31 41
2026-10-10	1	2nd	8 31 36 38 40
2026-10-09	6	2nd	12 31 33 36 37
2026-10-03	2	4th	9 11 29

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 5/45 tonight whatever it did last week.

2026-03-25	16	4th	1 21 27 31 43
2026-03-09	3	5th	10 17 23 30 31
2026-03-06	6	3rd	20 21 31 35 38
2026-02-28	3	3rd	14 23 31 36 40
2026-02-25	3	5th	7 9 16 28 31
2026-02-22	3	5th	7 16 24 26 31
2026-02-19	3	4th	1 4 21 31 43
2026-02-16	1	3rd	2 23 31 39 45
2026-02-15	1	3rd	5 13 31 32 44
2026-02-14	2	4th	6 7 16 31 43
2026-02-12	1	2nd	11 31 38 43 44
2026-02-11	9	4th	4 6 30 31 40
2026-02-02	1	3rd	12 20 31 39 44
2026-02-01	13	3rd	3 13 31 39 44
2026-01-19	14	3rd	17 23 31 35 41
2026-01-05	13	3rd	6 25 31 36 42
2025-12-23	26	4th	2 3 21 31 38
2025-11-26	8	3rd	5 14 31 41 43
2025-11-18	9	5th	6 16 24 30 31
2025-11-09	13	3rd	1 6 31 42 45
2025-10-27	6	4th	7 12 14 31 34
2025-10-20	8	4th	20 22 25 31 44
2025-10-12	2	2nd	29 31 33 37 43
2025-10-10	7	3rd	24 25 31 34 41
2025-10-03	14	4th	5 16 24 31 32
2025-09-19	18	3rd	13 15 31 37 45
2025-09-01	6	4th	3 24 28 31 35
2025-08-26	23	4th	4 11 12 31 43
2025-08-03	4	5th	7 23 24 29 31
2025-07-30	24	4th	5 20 25 31 43
2025-07-06	1	3rd	3 28 31 35 44
2025-07-05	4	3rd	13 18 31 34 37
2025-07-01	7	5th	2 10 24 30 31
2025-06-24	8	4th	2 4 26 31 36
2025-06-16	32	4th	12 19 30 31 45
2025-05-15	10	3rd	17 21 31 34 40
2025-05-05	7	2nd	22 31 33 34 35
2025-04-28	2	5th	4 9 11 17 31
2025-04-26	12	4th	10 11 24 31 38
2025-04-14	19	3rd	7 9 31 41 44
2025-03-26	8	2nd	4 31 37 41 42
2025-03-18	11	3rd	17 25 31 35 45
2025-03-07	12	4th	4 5 19 31 38
2025-02-23	11	3rd	19 26 31 32 37
2025-02-12	2	4th	19 28 30 31 38
2025-02-10	2	3rd	12 13 31 39 40
2025-02-08	14	3rd	1 19 31 33 43
2025-01-25	2	5th	1 5 9 22 31
2025-01-23	17	4th	6 13 26 31 34
2025-01-06	15	3rd	3 10 31 39 41
2024-12-22	4	4th	1 11 30 31 37
2024-12-18	1	5th	7 22 23 26 31
2024-12-17	14	3rd	15 16 31 32 45
2024-12-03	3	3rd	2 11 31 39 43
2024-11-30	5	3rd	2 14 31 37 42
2024-11-25	1	4th	6 18 20 31 32
2024-11-24	29	4th	5 12 23 31 38
2024-10-26	10	5th	9 14 22 23 31
2024-10-16	9	4th	19 26 27 31 38
2024-10-07	8	4th	3 11 30 31 42
2024-09-29	1	2nd	6 31 33 34 37
2024-09-28	26	4th	23 24 27 31 32
2024-09-02	10	5th	22 26 28 29 31
2024-08-23	2	5th	6 16 21 25 31
2024-08-21	3	4th	1 11 12 31 45
2024-08-18	2	4th	14 16 20 31 39
2024-08-16	14	4th	4 11 21 31 42
2024-08-02	14	5th	5 9 27 30 31
2024-07-19	32	3rd	3 29 31 32 45
2024-06-17	6	3rd	4 11 31 34 45
2024-06-11	9	3rd	12 18 31 33 38
2024-06-02	15	3rd	13 22 31 33 43
2024-05-18	8	4th	1 15 19 31 39
2024-05-10	4	4th	8 25 28 31 42
2024-05-06	1	5th	4 10 11 17 31
2024-05-05	30	5th	5 12 13 30 31
2024-04-05	11	4th	23 25 28 31 44
2024-03-25	45	5th	6 10 14 17 31
2024-02-09	5	5th	11 18 23 27 31
2024-02-04	9	4th	1 20 22 31 42
2024-01-26	22	4th	16 19 21 31 43
2024-01-04	16	4th	7 13 26 31 39
2023-12-19	5	4th	4 5 22 31 33
2023-12-14	4	5th	2 17 19 28 31
2023-12-10	9	3rd	12 30 31 35 41
2023-12-01	5	5th	6 14 15 28 31
2023-11-26	3	5th	14 15 21 26 31
2023-11-23	1	2nd	7 31 34 38 41
2023-11-22	3	5th	4 16 22 23 31
2023-11-19	6	4th	7 20 26 31 43
2023-11-13	6	5th	7 17 22 29 31
2023-11-07	12	4th	5 27 28 31 41
2023-10-26	24	4th	1 4 28 31 40
2023-10-02	5	4th	4 15 19 31 40
2023-09-27	1	4th	9 13 20 31 33
2023-09-26	7	4th	19 23 28 31 42
2023-09-19	2	4th	7 20 21 31 43
2023-09-17	15	4th	5 10 13 31 39
2023-09-02	2	4th	2 5 9 31 39
2023-08-31	3	2nd	16 31 33 37 42
2023-08-28	6	3rd	12 15 31 35 38
2023-08-22	12	1st	31 33 36 41 45
2023-08-10	4	5th	10 11 19 21 31
2023-08-06	18	4th	12 17 19 31 35
2023-07-19	11	2nd	3 31 34 36 44
2023-07-08	17	3rd	18 24 31 33 37
2023-06-21	3	4th	3 11 14 31 37
2023-06-18	2	4th	8 22 27 31 37
2023-06-16	1	2nd	11 31 37 41 43
2023-06-15	3	4th	8 11 17 31 32
2023-06-12	7	5th	3 4 17 22 31
2023-06-05	1	4th	11 16 18 31 39
2023-06-04	5	2nd	17 31 32 41 45
2023-05-30	3	2nd	3 31 32 35 41
2023-05-27	7	5th	9 13 19 22 31
2023-05-20	3	4th	10 18 28 31 38
2023-05-17	1	4th	7 9 29 31 42
2023-05-16	2	5th	2 4 15 17 31
2023-05-14	5	5th	5 10 21 26 31
2023-05-09	6	5th	3 9 15 18 31
2023-05-03	8	2nd	22 31 34 39 42
2023-04-25	4	2nd	23 31 36 38 42
2023-04-21	13	4th	20 23 27 31 45
2023-04-08	9	2nd	8 31 39 44 45
2023-03-30	4	3rd	4 23 31 32 33
2023-03-26	8	4th	6 18 25 31 44
2023-03-18	11	4th	3 13 22 31 36
2023-03-07	2	3rd	9 11 31 41 42
2023-03-05	1	3rd	9 14 31 33 39
2023-03-04	1	4th	4 11 22 31 32
2023-03-03	4	2nd	7 31 35 36 40
2023-02-27	20	2nd	9 31 32 35 39
2023-02-07	1	4th	7 15 19 31 39
2023-02-06	35	4th	10 21 23 31 39
2023-01-02	5	4th	3 8 28 31 33
2022-12-28	4	3rd	4 8 31 32 42
2022-12-24	5	4th	2 12 30 31 34
2022-12-19	38	3rd	16 29 31 36 40
2022-11-11	10	5th	7 21 24 29 31
2022-11-01	7	5th	11 12 19 21 31
2022-10-08	5	3rd	23 25 31 35 42
2022-09-07	7	5th	5 16 17 20 31
2022-08-13	3	1st	31 33 35 36 41
2022-08-03	21	3rd	7 10 31 41 45
2022-05-21	19	5th	8 14 19 22 31
2022-03-16	7	3rd	10 17 31 34 39
2022-02-19	7	2nd	28 31 32 40 44
2022-01-26	5	4th	10 17 20 31 38
2022-01-08	18	4th	3 14 23 31 39
2021-11-06	18	3rd	1 27 31 34 41
2021-09-04	25	3rd	2 14 31 39 43
2021-06-09	11	3rd	12 27 31 38 39
2021-05-01	14	2nd	13 31 36 40 44
2021-03-13	20	3rd	9 10 31 34 40
2021-01-02	7	3rd	8 10 31 37 44
2020-12-09	5	3rd	7 11 31 38 44
2020-11-21	7	3rd	1 10 31 32 43
2020-10-28	9	5th	17 18 22 24 31
2020-09-26	8	3rd	12 19 31 33 43
2020-08-29	3	5th	5 6 15 18 31
2020-08-19	5	3rd	3 29 31 35 37
2020-08-01	21	4th	13 16 28 31 36
2020-05-20	7	2nd	29 31 34 40 45
2020-04-25	10	3rd	14 30 31 32 39
2020-03-21	20	5th	18 20 25 29 31
2020-01-11	9	3rd	9 15 31 36 40
2019-12-11	25	3rd	6 14 31 40 44
2019-09-14	4	4th	22 28 30 31 38
2019-08-31	5	3rd	5 17 31 40 45
2019-08-14	2	3rd	18 21 31 33 37
2019-08-07	9	5th	4 15 17 22 31
2019-07-06	13	3rd	5 26 31 39 42
2019-05-22	9	5th	1 7 9 29 31
2019-04-20	19	4th	18 25 30 31 45
2019-02-13	19	5th	2 7 9 18 31
2018-12-08	4	4th	8 23 29 31 44
2018-11-24	15	3rd	11 13 31 36 38
2018-10-03	1	5th	11 12 13 14 31
2018-09-29	2	5th	2 13 22 23 31
2018-09-22	12	5th	15 21 23 27 31
2018-08-11	5	3rd	17 21 31 39 41
2018-07-25	4	4th	5 18 22 31 39
2018-07-11	30	3rd	3 10 31 32 37
2018-03-28	2	3rd	18 26 31 40 42
2018-03-21	12	4th	9 17 22 31 42
2018-02-07	3	4th	4 25 26 31 37
2018-01-27	6	4th	15 17 26 31 42
2018-01-06	18	5th	10 12 23 29 31
2017-11-04	1	2nd	3 31 33 36 42
2017-11-01	3	3rd	9 12 31 39 42
2017-10-21	5	4th	6 25 30 31 39
2017-10-04	22	4th	2 12 25 31 42
2017-07-19	1	5th	5 9 25 27 31
2017-07-15	15	3rd	12 27 31 39 45
2017-05-24	9	4th	11 12 19 31 34
2017-04-22	—	3rd	5 26 31 34 39