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
flagBelgium
23%
69%
0%
0%
13
flagSpain
21%
68%
0%
5%
19
flagUkraine
29%
62%
0%
4%
24
flagFrance
38%
61%
0%
0%
31
flagSweden
38%
61%
0%
0%
13
flagItaly
29%
59%
3%
7%
27
flagPoland
33%
54%
5%
3%
11922
flagthe Netherlands
27%
54%
16%
2%
37
flagthe United Kingdom
36%
53%
5%
3%
297
flagGermany
30%
53%
6%
4%
174
flagNorway
28%
53%
9%
6%
32
flagCanada
30%
53%
6%
6%
30
flagRepublic of Ireland
41%
51%
4%
0%
41
flagIndia
30%
50%
4%
5%
101
flagAustralia
44%
50%
0%
0%
18
flagDenmark
41%
50%
8%
0%
12
flagthe United States
31%
47%
6%
7%
284
flagUnknown
37%
44%
8%
6%
305
flagCzech Republic
58%
33%
8%
0%
12
flagthe Philippines
55%
27%
16%
0%
18

Gender

men54%
women53%
15
32%
37%
17
54%
53%
19
6%
5%
21
5%
3%

Language versions

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What is the next number in the sequence? 2,3,5,7,11,13...
639
50%

Details

Author: Kasia
Illustration: D. Sharon Pruitt
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