Number 21

In El Gordo de la Primitiva under the 5/54 + 1/9 · since Jan 2010 rules — 866 draws, 5 from 1–54.

82times drawn · chance expected 80 +0.21σ

2draws waiting · a wait this long: 91% for any number

10.7average wait between appearances · chance says 10.8

38longest completed wait · 90% chance of one at least that long

21 is drawn as often as chance explains

Drawn 82 times in 866 draws against 80.2 expected, +0.21σ. Each draw is independent: after 2 draws away it is exactly as likely tonight as a number drawn yesterday.

Number 21, draw by draw

Drawn 82 times in 866 draws · average wait 10.7 draws · longest completed wait 38 · waiting 2 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 21 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 smallest9 · chance 11.5
2nd smallest27 · chance 30.6
3rd smallest29 · chance 28.1
4th smallest16 · chance 10.5
5th smallest1 · chance 1.4

Every position’s lane →

The company it keeps

Seen most often with these — chance gives every partner about 6.2 shared draws, and the leaders are simply the ones that came out ahead this time.

2 11 3 19 48 51

It has shared a draw with every one of the other 53 numbers; chance expected about 0.1 still unmet by now. Every pair →

How many people play it

Under the crowd model, 21 is picked about 1.22× as often as an indifferent choice — 15th most popular of 54. 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 21 →

Every draw it appeared in

Date	Wait	Position	The draw
2026-09-27	1	2nd	12 21 33 35 51
2026-09-20	21	2nd	1 21 23 28 45
2026-04-26	6	2nd	19 21 24 40 54
2026-03-15	4	3rd	11 13

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: 21 is drawn with probability 5/54 tonight whatever it did last week.

2021-09-12	13	3rd	11 15 21 35 51
2021-06-13	8	3rd	4 14 21 25 51
2021-04-18	4	2nd	19 21 24 42 44
2021-03-21	10	1st	21 27 30 34 42
2021-01-10	8	4th	2 19 20 21 25
2020-11-15	22	5th	2 3 7 16 21
2020-06-14	10	2nd	3 21 31 32 54
2020-01-26	4	3rd	1 12 21 40 54
2019-12-29	4	3rd	13 16 21 30 35
2019-12-01	19	2nd	9 21 30 41 53
2019-07-21	15	3rd	3 17 21 37 43
2019-04-07	38	4th	5 9 19 21 27
2018-07-15	9	2nd	3 21 40 42 49
2018-05-13	1	3rd	8 12 21 34 47
2018-05-06	1	1st	21 33 39 43 50
2018-04-29	26	2nd	13 21 40 42 52
2017-10-29	9	3rd	9 11 21 51 54
2017-08-27	16	2nd	9 21 31 45 46
2017-05-07	5	2nd	2 21 37 51 53
2017-04-02	11	4th	1 11 17 21 32
2017-01-15	4	2nd	3 21 31 39 46
2016-12-18	38	1st	21 22 44 46 54
2016-03-27	6	3rd	15 19 21 28 33
2016-02-14	5	2nd	12 21 22 25 39
2016-01-10	7	2nd	13 21 28 43 51
2015-11-22	3	2nd	3 21 38 39 48
2015-11-01	6	4th	6 10 11 21 31
2015-09-20	4	4th	7 8 19 21 36
2015-08-23	3	3rd	10 13 21 38 42
2015-08-02	6	2nd	16 21 26 42 54
2015-06-21	1	3rd	10 11 21 25 48
2015-06-14	4	3rd	5 14 21 26 41
2015-05-17	15	1st	21 34 36 48 52
2015-02-01	6	4th	2 7 14 21 31
2014-12-21	12	3rd	16 20 21 32 37
2014-09-28	7	3rd	7 20 21 33 38
2014-08-10	13	4th	8 14 19 21 45
2014-05-11	1	3rd	19 20 21 47 54
2014-05-04	17	3rd	1 2 21 37 53
2014-01-05	1	2nd	2 21 25 44 52
2013-12-29	5	3rd	11 17 21 26 47
2013-11-24	36	3rd	9 17 21 37 41
2013-03-17	3	3rd	2 8 21 24 40
2013-02-24	18	3rd	5 7 21 27 33
2012-10-21	16	1st	21 34 43 53 54
2012-07-01	1	2nd	3 21 24 27 53
2012-06-24	12	4th	4 11 15 21 35
2012-04-01	3	2nd	2 21 27 36 38
2012-03-11	17	4th	4 8 16 21 53
2011-11-13	12	4th	4 9 16 21 29
2011-08-21	15	3rd	5 6 21 26 37
2011-05-08	10	2nd	18 21 43 48 50
2011-02-27	5	3rd	11 12 21 23 28
2011-01-23	11	3rd	11 14 21 33 50
2010-11-07	9	2nd	7 21 35 44 50
2010-09-05	5	2nd	16 21 29 31 54
2010-08-01	30	2nd	7 21 35 37 43
2010-01-03	—	1st	21 24 48 51 53