Prime Number or Not?

Random Science or Numbers Quiz

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

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

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