Number 13

In Oz Lotto under the 7/45 + 2/45 · Jan 2009 – May 2022 rules — 697 draws, 7 from 1–45 (an earlier era).

105times drawn · chance expected 108 −0.36σ

25draws waiting · a wait this long: 2% for any number

6.4average wait between appearances · chance says 6.4

37longest completed wait · 21% chance of one at least that long

13 is drawn as often as chance explains

Drawn 105 times in 697 draws against 108.4 expected, −0.36σ. Each draw is independent: after 25 draws away it is exactly as likely tonight as a number drawn yesterday. It has also come out as the bonus ball 25 times, counted separately.

Number 13, draw by draw

Drawn 105 times in 697 draws · average wait 6.4 draws · longest completed wait 37 · waiting 25 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 13 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 smallest16 · chance 13.5
2nd smallest31 · chance 35.9
3rd smallest37 · chance 35.3
4th smallest15 · chance 16.2
5th smallest5 · chance 3.7
6th smallest1 · chance 0.4
7th smallest0 · chance 0.0

Every position’s lane →

The company it keeps

Seen most often with these — chance gives every partner about 14.3 shared draws, and the leaders are simply the ones that came out ahead this time.

2 21 7 39 45 15

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, 13 is picked about 0.92× as often as an indifferent choice — 31st 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 number 13, in Western markets ×0.75

The model and its sources → · What people believe about 13 →

Every draw it appeared in

Date	Wait	Position	The draw
2021-11-16	3	1st	13 24 32 34 35 38 39
2021-10-26	1	2nd	1 13 15 17 32 44 45
2021-10-19	1	2nd	8 13 14 25 35 36

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: 13 is drawn with probability 7/45 tonight whatever it did last week.

2019-10-15	6	2nd	5 13 20 22 25 32 42
2019-09-03	4	2nd	6 13 23 27 38 39 44
2019-08-06	10	1st	13 15 19 24 32 37 45
2019-05-28	7	2nd	3 13 20 24 30 33 34
2019-04-09	3	1st	13 17 20 22 31 37 39
2019-03-19	13	2nd	6 13 14 22 28 40 41
2018-12-18	3	2nd	4 13 15 16 27 29 45
2018-11-27	1	3rd	4 7 13 18 25 30 38
2018-11-20	12	2nd	2 13 19 22 24 28 39
2018-08-28	4	3rd	1 2 13 19 21 23 34
2018-07-31	1	4th	1 7 10 13 25 26 40
2018-07-24	2	3rd	2 3 13 22 38 39 40
2018-07-10	6	4th	1 3 10 13 37 40 44
2018-05-29	1	5th	1 8 9 12 13 21 44
2018-05-22	1	3rd	2 12 13 19 31 39 45
2018-05-15	6	4th	3 6 12 13 29 40 41
2018-04-03	2	2nd	2 13 24 26 36 37 42
2018-03-20	19	4th	4 8 11 13 16 32 34
2017-11-07	6	3rd	4 12 13 26 30 37 45
2017-09-26	6	3rd	6 8 13 14 33 41 45
2017-08-15	2	3rd	4 8 13 17 25 33 43
2017-08-01	6	3rd	3 9 13 16 37 41 43
2017-06-20	1	1st	13 16 17 21 23 25 28
2017-06-13	2	5th	2 4 9 10 13 14 43
2017-05-30	6	3rd	1 4 13 19 26 31 35
2017-04-18	23	1st	13 27 29 33 39 42 44
2016-11-08	3	4th	2 5 7 13 22 36 42
2016-10-18	3	4th	3 6 9 13 23 37 43
2016-09-27	7	2nd	3 13 21 26 32 36 45
2016-08-09	6	3rd	2 11 13 18 26 33 41
2016-06-28	15	2nd	11 13 16 19 24 32 44
2016-03-15	4	4th	2 8 12 13 32 37 38
2016-02-16	3	1st	13 15 22 28 33 37 45
2016-01-26	1	2nd	5 13 23 24 26 35 41
2016-01-19	7	4th	1 10 12 13 25 31 34
2015-12-01	8	4th	5 7 8 13 14 15 29
2015-10-06	3	3rd	2 7 13 21 26 36 42
2015-09-15	1	3rd	1 2 13 19 29 33 43
2015-09-08	1	3rd	4 9 13 21 24 37 38
2015-09-01	6	1st	13 18 22 24 25 43 45
2015-07-21	3	2nd	3 13 20 21 26 30 33
2015-06-30	7	4th	2 10 11 13 22 29 33
2015-05-12	20	1st	13 24 27 28 30 33 43
2014-12-23	2	2nd	6 13 17 19 25 34 37
2014-12-09	2	2nd	7 13 15 21 25 42 43
2014-11-25	3	3rd	8 9 13 16 24 25 42
2014-11-04	7	1st	13 14 18 21 23 25 31
2014-09-16	37	1st	13 15 31 33 34 36 45
2013-12-31	9	4th	4 7 9 13 14 36 41
2013-10-29	13	2nd	7 13 29 32 39 43 45
2013-07-30	3	3rd	3 7 13 16 21 29 39
2013-07-09	1	5th	1 2 7 11 13 17 41
2013-07-02	7	1st	13 15 20 31 38 42 45
2013-05-14	18	4th	1 9 12 13 22 26 41
2013-01-08	6	2nd	1 13 15 30 35 39 40
2012-11-27	3	3rd	1 9 13 16 22 33 34
2012-11-06	5	4th	2 7 8 13 15 29 43
2012-10-02	32	3rd	2 11 13 15 28 33 41
2012-02-21	4	2nd	6 13 14 19 31 41 45
2012-01-24	1	3rd	10 12 13 27 29 40 44
2012-01-17	31	5th	2 5 7 11 13 31 32
2011-06-14	9	4th	1 3 4 13 15 21 26
2011-04-12	3	3rd	5 9 13 18 29 40 41
2011-03-22	2	2nd	10 13 15 16 37 39 44
2011-03-08	11	2nd	7 13 16 20 28 29 36
2010-12-21	9	3rd	7 8 13 26 35 38 42
2010-10-19	7	2nd	8 13 19 27 35 38 45
2010-08-31	6	2nd	8 13 16 23 30 33 40
2010-07-20	1	5th	3 5 6 7 13 23 34
2010-07-13	8	2nd	6 13 16 23 27 31 39
2010-05-18	1	1st	13 18 22 27 33 38 42
2010-05-11	8	3rd	7 10 13 15 18 27 45
2010-03-16	11	3rd	2 3 13 27 31 37 38
2009-12-29	15	3rd	6 12 13 22 27 28 33
2009-09-15	6	2nd	7 13 15 19 27 35 43
2009-08-04	14	3rd	2 11 13 22 25 39 42
2009-04-28	3	2nd	1 13 21 24 25 36 43
2009-04-07	1	3rd	7 12 13 21 26 35 41
2009-03-31	3	3rd	5 8 13 15 35 41 44
2009-03-10	2	1st	13 14 16 24 28 29 38
2009-02-24	—	2nd	2 13 28 30 34 41 45