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

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