Prime Number or Not?

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

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