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

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