Prime Number or Not?

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

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