Is It Prime?

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

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