Prime Number or Not?

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

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