What is the next number in the sequence? 2,3,5,7,11,13...

15
17
19
21
The sequence 2,3,5,7,11,13 includes prime numbers only. Many people in­cor­rect­ly select 15, fooled by the fact that all prime numbers except 2 are odd.

Answers distribution

15
17
19
21
answers
flagIsrael
10%
80%
10%
0%
10
flagBelgium
23%
69%
0%
0%
13
flagFrance
36%
63%
0%
0%
30
flagSpain
25%
62%
0%
6%
16
flagCanada
28%
57%
7%
3%
28
flagItaly
30%
57%
3%
7%
26
flagPoland
34%
54%
5%
3%
10518
flagthe Netherlands
28%
54%
14%
2%
35
flagthe United Kingdom
37%
52%
5%
3%
265
flagGermany
30%
52%
6%
4%
165
flagRepublic of Ireland
41%
51%
4%
0%
41
flagNorway
31%
51%
6%
6%
29
flagIndia
29%
50%
5%
6%
94
flagDenmark
40%
50%
10%
0%
10
flagthe United States
31%
48%
7%
6%
267
flagAustralia
47%
47%
0%
0%
17
flagUnknown
41%
45%
4%
6%
48
flagCzech Republic
54%
36%
9%
0%
11
flagUkraine
58%
33%
0%
8%
12
flagthe Philippines
60%
26%
13%
0%
15

Gender

men56%
women53%
15
31%
37%
17
56%
53%
19
6%
5%
21
5%
3%

Language versions

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answers
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What is the next number in the sequence? 2,3,5,7,11,13...
578
50%

Details

Author: Kasia
Illustration: D. Sharon Pruitt
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