Number 31

In Lotto under the 6/52 + 1/52 · Aug 2017 – Sep 2025 rules — 847 draws, 6 from 1–52 (an earlier era).

93times drawn · chance expected 98 −0.51σ

8draws waiting · a wait this long: 42% for any number

9.1average wait between appearances · chance says 8.7

45longest completed wait · 34% chance of one at least that long

31 is drawn as often as chance explains

Drawn 93 times in 847 draws against 97.7 expected, −0.51σ. Each draw is independent: after 8 draws away it is exactly as likely tonight as a number drawn yesterday. It has also come out as the bonus ball 20 times, counted separately.

Number 31, draw by draw

Drawn 93 times in 847 draws · average wait 9.1 draws · longest completed wait 45 · waiting 8 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 smallest1 · chance 0.8
2nd smallest2 · chance 7.1
3rd smallest17 · chance 22.9
4th smallest31 · chance 33.8
5th smallest34 · chance 22.8
6th smallest8 · chance 5.6

Every position’s lane →

The company it keeps

Seen most often with these — chance gives every partner about 9.1 shared draws, and the leaders are simply the ones that came out ahead this time.

12 11 17 23 26 49

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
2025-08-23	5	4th	10 14 22 31 32 49
2025-08-06	8	5th	3 5 18 26 31 49
2025-07-09	11	5th	1 8 12 13 31 35
2025-05-31	5	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 6/52 tonight whatever it did last week.

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