Number 31

In VinciCasa under the 5/40 · since Sep 2024 rules — 735 draws, 5 from 1–40.

90times drawn · chance expected 92 −0.21σ

9draws waiting · a wait this long: 34% for any number

8.1average wait between appearances · chance says 8.0

57longest completed wait · 5% chance of one at least that long

31 is drawn as often as chance explains

Drawn 90 times in 735 draws against 91.9 expected, −0.21σ. 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 735 draws · average wait 8.1 draws · longest completed wait 57 · 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 smallest1 · chance 0.1
2nd smallest3 · chance 2.8
3rd smallest11 · chance 17.1
4th smallest44 · chance 40.0
5th smallest31 · chance 30.0

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.

2 10 23 1 5 15

It has shared a draw with every one of the other 39 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 40. 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
2026-10-03	12	5th	10 15 18 22 31
2026-09-21	9	3rd	2 7 31 32 34
2026-09-12	1	4th	1 3 21 31 37
2026-09-11	12	4th	8 9 23 31

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 5/40 tonight whatever it did last week.

2026-05-09	13	5th	5 12 16 23 31
2026-04-26	9	4th	17 26 27 31 32
2026-04-17	9	5th	2 13 20 28 31
2026-04-08	6	4th	2 10 24 31 38
2026-04-02	2	4th	3 13 28 31 39
2026-03-31	1	5th	1 8 28 30 31
2026-03-30	25	4th	3 11 15 31 38
2026-03-05	3	1st	31 33 37 39 40
2026-03-02	9	3rd	14 19 31 35 40
2026-02-21	7	4th	3 11 16 31 34
2026-02-14	2	5th	9 16 18 25 31
2026-02-12	15	4th	2 6 30 31 37
2026-01-28	12	5th	5 10 13 18 31
2026-01-16	5	5th	15 17 18 20 31
2026-01-11	6	4th	6 9 24 31 33
2026-01-05	3	5th	1 18 24 25 31
2026-01-02	2	4th	21 25 26 31 33
2025-12-31	4	4th	21 28 30 31 39
2025-12-27	3	5th	10 16 17 29 31
2025-12-24	57	5th	6 10 19 24 31
2025-10-17	4	2nd	25 31 34 35 36
2025-10-13	11	4th	8 17 18 31 39
2025-10-01	8	5th	5 11 16 30 31
2025-09-23	14	4th	4 7 20 31 36
2025-09-09	5	4th	2 8 22 31 32
2025-09-04	3	4th	8 14 23 31 37
2025-09-01	3	3rd	7 10 31 35 36
2025-08-29	2	4th	8 10 15 31 38
2025-08-27	6	4th	4 6 20 31 34
2025-08-21	3	4th	19 23 28 31 40
2025-08-18	20	4th	2 10 16 31 37
2025-07-29	1	4th	2 9 23 31 38
2025-07-28	9	4th	5 17 21 31 35
2025-07-19	5	4th	13 17 25 31 32
2025-07-14	2	5th	5 9 24 25 31
2025-07-12	2	4th	5 6 12 31 34
2025-07-10	14	5th	1 3 5 21 31
2025-06-26	3	5th	1 20 24 27 31
2025-06-23	7	5th	5 16 17 26 31
2025-06-16	7	4th	1 10 26 31 34
2025-06-09	4	3rd	4 19 31 33 38
2025-06-05	7	4th	11 13 21 31 35
2025-05-29	18	4th	3 10 29 31 38
2025-05-11	2	2nd	29 31 35 36 38
2025-05-09	6	4th	3 14 21 31 34
2025-05-03	3	4th	8 16 19 31 34
2025-04-30	28	4th	8 19 26 31 34
2025-04-02	34	5th	3 9 10 15 31
2025-02-27	2	4th	2 19 27 31 32
2025-02-25	5	5th	6 12 21 29 31
2025-02-20	4	5th	1 9 22 26 31
2025-02-16	21	4th	4 6 14 31 33
2025-01-26	6	5th	16 18 21 26 31
2025-01-20	16	4th	11 13 29 31 32
2025-01-04	1	4th	5 15 26 31 38
2025-01-03	4	5th	6 13 18 28 31
2024-12-30	5	4th	3 19 23 31 37
2024-12-25	10	3rd	7 17 31 35 39
2024-12-15	22	3rd	19 25 31 32 39
2024-11-23	4	4th	7 23 27 31 35
2024-11-19	19	3rd	6 9 31 32 38
2024-10-31	6	4th	1 12 27 31 34
2024-10-25	6	5th	7 10 12 19 31
2024-10-19	1	5th	7 11 13 30 31
2024-10-18	20	5th	2 3 14 24 31
2024-09-28	—	5th	2 7 19 25 31