Prime Number or Not?

Random Science or math Quiz

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

Featured Feb 16, 2015

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

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