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

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