Science Quiz / Is It Prime?

Random Science or Math Quiz

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

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Forced OrderWrong Answers
Also try: Prime Numbers
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Score 0/149 Timer 12:00
NumberPrime (P) or Not Prime (N)Possibly Helpful Information
21
157
67
253
197
337
191
171
261
113
431
341
101
523
457
421
227
17
89
301
273
319
3
71
1
223
317
2
397
181
489
51
353
419
221
87
271
389
323
263
107
203
333
41
131
249
111
193
471
39
NumberPrime (P) or Not Prime (N)Possibly Helpful Information
151
47
19
393
7
69
127
359
441
437
269
443
173
217
73
543
43
241
53
479
37
103
387
423
149
293
501
467
59
401
357
469
487
403
499
533
91
541
97
307
79
231
373
13
229
257
139
371
281
449
NumberPrime (P) or Not Prime (N)Possibly Helpful Information
123
5
503
521
331
453
311
283
509
31
361
183
11
179
433
211
349
61
239
411
133
83
511
109
463
409
291
313
167
379
287
461
251
137
199
29
143
347
159
367
23
277
527
491
161
439
493
383
163

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