Prime Number or Not?

Random Science or Numbers Quiz

Can you name the prime numbers (p) and composite numbers (n)?

Updated Feb 16, 2015

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Number'P'rime or 'N'ot?
2013
43
41
1000
63
61
639
171
69
222
17
19
117
1551
13
989
263
89
71
123
Number'P'rime or 'N'ot?
151
201
5
49
1967
53
42
187
1747
2011
267
2
225
3
15
947
105
149
67
55
Number'P'rime or 'N'ot?
11
47
703
321
207
114
1103
21
2001
141
59
31
37
107
751
7
97
27
73
29
Number'P'rime or 'N'ot?
4
101
1001
79
199
83
641
1337
999
23
51
99
77
1999
111
137
87
103
153
253

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