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

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