Number 15

In Big Sky Bonus under the 4/31 + 1/16 · since Oct 2024 rules — 727 draws, 4 from 1–31.

87times drawn · chance expected 94 −0.75σ

14draws waiting · a wait this long: 17% for any number

8.1average wait between appearances · chance says 7.8

45longest completed wait · 18% chance of one at least that long

15 is drawn as often as chance explains

Drawn 87 times in 727 draws against 93.8 expected, −0.75σ. Each draw is independent: after 14 draws away it is exactly as likely tonight as a number drawn yesterday.

Number 15, draw by draw

Drawn 87 times in 727 draws · average wait 8.1 draws · longest completed wait 45 · waiting 14 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 15 has a favourite seat — chance gives a small number the low positions more often. That is the shape of sorting, not of the machine.

1st smallest12 · chance 12.0
2nd smallest30 · chance 36.0
3rd smallest34 · chance 31.2
4th smallest11 · chance 7.8

Every position’s lane →

The company it keeps

Seen most often with these — chance gives every partner about 8.7 shared draws, and the leaders are simply the ones that came out ahead this time.

20 14 3 1 2 27

It has shared a draw with every one of the other 30 numbers; chance expected about 0.0 still unmet by now. Every pair →

How many people play it

Under the crowd model, 15 is picked about 1.22× as often as an indifferent choice — 15th most popular of 31. 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 15 →

Every draw it appeared in

Date	Wait	Position	The draw
2026-09-28	8	3rd	4 10 15 16
2026-09-20	1	1st	15 23 24 31
2026-09-19	4	2nd	14 15 16 29
2026-09-15	3	2nd	14 15 20 25
2026-09-12	7	3rd

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: 15 is drawn with probability 4/31 tonight whatever it did last week.

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