Prime Number or Not?

Random Science or This or That Quiz

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

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

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Created Dec 14, 2011Editor's PickSourceReportNominate
Tags:math, Numbers, This or That, Guessing Game, Prime Numbers