Number 18

In SuperEnalotto under the 6/90 + 1/90 · Dec 1997 – Jul 2009 rules — 1,425 draws, 6 from 1–90 (an earlier era).

85times drawn · chance expected 95 −1.06σ

10draws waiting · a wait this long: 54% for any number

16.6average wait between appearances · chance says 15.0

78longest completed wait · 34% chance of one at least that long

18 is drawn as often as chance explains

Drawn 85 times in 1,425 draws against 95.0 expected, −1.06σ. Each draw is independent: after 10 draws away it is exactly as likely tonight as a number drawn yesterday. It has also come out as the bonus ball 17 times, counted separately.

Number 18, draw by draw

Drawn 85 times in 1,425 draws · average wait 16.6 draws · longest completed wait 78 · waiting 10 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 18 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 smallest30 · chance 28.7
2nd smallest38 · chance 35.8
3rd smallest13 · chance 16.6
4th smallest4 · chance 3.6
5th smallest0 · chance 0.4
6th smallest0 · chance 0.0

Every position’s lane →

The company it keeps

Seen most often with these — chance gives every partner about 4.8 shared draws, and the leaders are simply the ones that came out ahead this time.

47 80 13 51 63 75

It has shared a draw with every one of the other 89 numbers; chance expected about 0.8 still unmet by now. Every pair →

How many people play it

Under the crowd model, 18 is picked about 1.22× as often as an indifferent choice — 15th most popular of 90. 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 18 →

Every draw it appeared in

Date	Wait	Position	The draw
2009-06-06	50	4th	8 14 16 18 56 60
2009-02-10	2	2nd	11 18 47 80 89 90
2009-02-05	60	2nd	7 18 27 33 35 43

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: 18 is drawn with probability 6/90 tonight whatever it did last week.

2006-04-26	29	2nd	13 18 47 51 60 64
2006-02-16	4	3rd	5 6 18 34 42 72
2006-02-07	27	2nd	11 18 27 37 65 72
2005-12-06	31	1st	18 38 43 57 73 88
2005-09-24	1	2nd	4 18 41 52 79 82
2005-09-22	4	1st	18 28 34 46 66 82
2005-09-13	12	1st	18 21 24 28 74 77
2005-08-16	8	1st	18 22 28 33 57 71
2005-07-28	8	2nd	8 18 25 38 41 43
2005-07-09	13	3rd	2 13 18 51 52 55
2005-06-04	23	2nd	15 18 35 55 64 88
2005-03-16	8	3rd	4 10 18 53 75 80
2005-02-16	1	3rd	6 8 18 51 80 89
2005-02-12	4	2nd	13 18 24 50 58 66
2005-01-29	15	3rd	1 16 18 43 47 78
2004-12-09	9	4th	6 8 15 18 33 75
2004-11-06	20	2nd	13 18 21 31 41 56
2004-08-28	10	1st	18 35 50 57 67 72
2004-07-24	3	3rd	5 17 18 27 33 47
2004-07-14	3	2nd	8 18 26 36 41 52
2004-07-03	2	2nd	14 18 22 27 39 58
2004-06-26	36	1st	18 37 40 45 54 56
2004-02-21	22	3rd	4 13 18 58 71 84
2003-12-06	7	3rd	1 2 18 27 43 47
2003-11-12	17	1st	18 29 32 55 79 82
2003-09-13	3	2nd	1 18 34 39 48 64
2003-09-03	4	1st	18 45 47 56 77 78
2003-08-20	6	4th	8 9 10 18 42 63
2003-07-30	4	2nd	7 18 46 74 82 90
2003-07-16	5	2nd	15 18 29 37 47 50
2003-06-28	18	2nd	14 18 34 48 49 74
2003-04-26	6	2nd	10 18 26 39 62 68
2003-04-05	17	2nd	12 18 47 63 75 81
2003-02-05	10	2nd	12 18 54 71 80 85
2003-01-02	6	2nd	6 18 34 43 58 80
2002-12-19	11	1st	18 27 49 59 81 88
2002-11-20	14	1st	18 26 44 51 63 90
2002-10-02	4	2nd	14 18 54 63 70 87
2002-09-18	45	2nd	11 18 55 77 81 85
2002-04-13	52	1st	18 21 76 79 80 84
2001-10-17	37	1st	18 49 60 64 80 84
2001-06-09	1	2nd	4 18 24 29 41 59
2001-06-06	2	2nd	7 18 44 48 51 63
2001-05-30	4	2nd	11 18 42 44 45 83
2001-05-16	19	3rd	13 15 18 49 65 73
2001-03-10	2	1st	18 39 61 68 74 75
2001-03-03	10	3rd	5 13 18 40 51 56
2001-01-27	16	3rd	2 6 18 20 49 83
2000-12-02	33	4th	6 11 17 18 20 59
2000-08-09	7	1st	18 36 47 62 75 80
2000-07-15	5	2nd	5 18 24 51 55 74
2000-06-28	22	3rd	3 17 18 41 63 89
2000-04-12	34	1st	18 24 45 58 62 80
1999-12-15	75	1st	18 21 28 35 41 85
1999-03-27	4	2nd	7 18 27 80 81 83
1999-03-13	17	2nd	6 18 20 34 72 90
1999-01-13	16	1st	18 23 45 51 61 86
1998-11-18	47	2nd	12 18 43 47 50 83
1998-06-06	12	2nd	13 18 22 56 67 72
1998-04-27	23	1st	18 36 62 63 76 80
1998-02-04	—	1st	18 23 24 35 48 82