Is It Prime?

Random Science or This or That Quiz

Can you name the first 100 primes and some non-primes?

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Also try: Prime Numbers
NumberPrime (P) or Not Prime (N)Possibly Helpful Information
73
251
469
5
431
163
361
293
91
449
149
283
133
387
421
183
333
227
471
211
101
347
37
493
419
167
23
51
313
277
239
523
263
11
337
291
541
379
143
79
67
107
457
217
373
21
111
271
59
533
NumberPrime (P) or Not Prime (N)Possibly Helpful Information
191
353
223
409
7
319
43
179
323
359
131
393
509
61
463
241
3
253
269
433
261
317
87
331
357
479
487
103
151
39
249
123
29
17
157
511
273
71
53
491
173
83
137
453
203
171
503
461
301
423
NumberPrime (P) or Not Prime (N)Possibly Helpful Information
113
441
257
403
231
437
19
47
193
127
13
521
443
439
89
221
97
411
489
161
2
371
287
281
69
199
349
31
501
109
229
341
367
311
139
527
467
159
41
389
383
197
499
401
543
1
307
181
397

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