Stats - the Is this prime? game

This page is updated at most once per minute. It was last updated at 2026-01-02T11:38:26+00:00.

You can download a dump of every attempt at the game in tab-separated values format: dump-2025-11-24.zip (17MB)

All-time stats

8095006 attempts

Reason for ending	Frequency
composite	4804709	59%
prime	3027720	37%
time	261146	3%

Final number	Reason for ending	Frequency
87	composite	942393	11.64%
51	composite	382501	4.73%
57	composite	379220	4.68%
39	composite	249886	3.09%
1	composite	248195	3.07%
63	composite	201668	2.49%
49	composite	198214	2.45%
69	composite	185485	2.29%
5	prime	185109	2.29%
9	composite	173722	2.15%
27	composite	173584	2.14%
59	prime	168993	2.09%
79	prime	161114	1.99%
67	prime	154941	1.91%
29	prime	151400	1.87%
47	prime	147676	1.82%
21	composite	145427	1.8%
61	prime	144637	1.79%
53	prime	143072	1.77%
77	composite	141791	1.75%

100 most recent attempts

Time finished	Time taken	Sequence	Final number	Reason for ending	Difficulty	Time allowed
2026-01-02 11:12:56	1.749	5	51	composite	1.02	60
2026-01-02 11:12:52	15.258	11,81,45,13,5,7,19,25,31,69	29	prime	1.02	60
2026-01-02 11:12:33	2.397	67	63	composite	1.02	60
2026-01-02 11:12:30	1.12		15	composite	1.02	60
2026-01-02 11:12:28	4.709	19,47,63	51	composite	1.02	60
2026-01-02 11:12:21	3.773	41,73	43	prime	1.02	60
2026-01-02 11:10:32	47.264	7,71,55,39,27,69,45,25,33,77,35,59,53,97,51,85,107,41,15,95,9,37,11,17,3,87	79	prime	1.02	60
2026-01-02 11:10:23	4.393	7,13	43	prime	1.02	61
2026-01-02 11:10:18	4.417	5	1	composite	1.02	61
2026-01-02 11:09:52	40.438	31,53,57,3,21,33,13,37,11,41,59,23,7,25,43,27,45,19,21,15,37,49,55	57	composite	1.02	61
2026-01-02 11:09:44	6.668	75,47	51	composite	1.02	60
2026-01-02 11:09:33	1.813		79	prime	1.02	60
2026-01-02 11:09:28	10.266	11,43,29,19,25,7	59	prime	1.02	60
2026-01-02 11:09:17	4.537	67,3	51	composite	1.02	60
2026-01-02 11:09:11	3.917	19,27	57	composite	1.02	60
2026-01-02 11:09:07	18.577	35,47,29,49,31,25	57	composite	1.02	61
2026-01-02 11:09:06	6.765	9,21,63	83	prime	1.02	60
2026-01-02 11:08:55	10.189	19,27,1,63,39	87	composite	1.02	60
2026-01-02 11:08:48	4.449	53,15,45	51	composite	1.02	61
2026-01-02 11:08:44	6.577	67,75,77,73	1	composite	1.02	60
2026-01-02 11:08:43	0.606	35	7	prime	1.02	61
2026-01-02 11:08:42	0.358		5	prime	1.02	61
2026-01-02 11:08:41	0.508		19	prime	1.02	61
2026-01-02 11:08:40	0.369		7	prime	1.02	61
2026-01-02 11:08:39	0.294		59	prime	1.02	61
2026-01-02 11:08:38	0.406		29	prime	1.02	61
2026-01-02 11:08:38	0.45		47	prime	1.02	61
2026-01-02 11:08:37	2.125	45	7	prime	1.02	61
2026-01-02 11:08:34	3.957	27,25	11	prime	1.02	61
2026-01-02 11:08:32	14.663	27,11,67,53,75,33,71,17	5	prime	1.02	60
2026-01-02 11:08:30	2.411	1	41	prime	1.02	61
2026-01-02 11:08:26	10.051	23,33,27,59,55	19	prime	1.02	61
2026-01-02 11:08:16	1.058		17	prime	1.02	61
2026-01-02 11:08:14	1.083		35	composite	1.02	61
2026-01-02 11:08:13	2.286	15	59	prime	1.02	61
2026-01-02 11:08:10	10.436	43,29,53,7,15,19	1	composite	1.02	61
2026-01-02 11:07:59	12.77	39,1,53,21,47,25,17,27,41	5	prime	1.02	61
2026-01-02 11:07:47	17.96	39,41,9	53	prime	1.02	60
2026-01-02 11:07:45	1.105		59	prime	1.02	61
2026-01-02 11:07:43	14.591	19,23,27,31,7,33,45	57	composite	1.02	61
2026-01-02 11:07:28	1.227		37	prime	1.02	61
2026-01-02 11:07:26	3.235	27	47	prime	1.02	61
2026-01-02 11:07:22	1.184		23	prime	1.02	61
2026-01-02 11:07:19	4.632	35,27,1,47	3	prime	1.02	61
2026-01-02 11:07:14	1.48		57	composite	1.02	61
2026-01-02 11:07:12	2.286		51	composite	1.02	61
2026-01-02 11:07:09	1.76		59	prime	1.02	61
2026-01-02 11:07:06	7.716	49,1,27,11,45	3	prime	1.02	61
2026-01-02 11:06:58	6.179	15	43	prime	1.02	61
2026-01-02 11:06:51	5.461	49,7	43	prime	1.02	61
2026-01-02 11:06:45	1.283		15	composite	1.02	61
2026-01-02 11:06:43	7.32	43,59,33,55,1	7	prime	1.02	61
2026-01-02 11:06:35	20.855	11,53,21,25,15,33,39,31,55,35,41,23,9	3	prime	1.02	61
2026-01-02 11:06:13	2.328	3	1	composite	1.02	61
2026-01-02 11:06:10	22.722	37,41,31,55,53,11,21,35,13,17,9,59,45	29	prime	1.02	61
2026-01-02 11:05:46	7.239		31	prime	1.02	61
2026-01-02 11:04:53	11.685	43,19,11,39,75,23,195,323	41	prime	1.26	60
2026-01-02 11:04:41	2.144	9	41	prime	1.26	60
2026-01-02 11:04:28	3.313	1,21,45	79	prime	1.02	60
2026-01-02 11:04:24	1.837		41	prime	1.02	60
2026-01-02 11:04:22	1.01		73	prime	1.02	60
2026-01-02 11:04:20	3.199	13	25	composite	1.02	60
2026-01-02 11:04:17	4.328	37,49	51	composite	1.02	60
2026-01-02 11:04:12	7.089	15,71,39,77,17	47	prime	1.02	60
2026-01-02 11:04:04	4.892	25,53,77	41	prime	1.02	60
2026-01-02 11:03:58	9.519	11,67,69,75,63,65,49	91	composite	1.02	60
2026-01-02 11:03:48	1.438		27	composite	1.02	60
2026-01-02 11:03:46	1.557		29	prime	1.02	60
2026-01-02 11:03:44	2.508	7	79	prime	1.02	60
2026-01-02 11:03:41	6.721	27,45	73	prime	1.02	60
2026-01-02 11:03:31	9.434	39,9,65,83,61,19,15	31	prime	1.02	60
2026-01-02 11:03:21	1.618		29	prime	1.02	60
2026-01-02 11:03:17	11.133	27,37	57	composite	1.02	60
2026-01-02 11:03:05	4.272	79,27,75	51	composite	1.02	60
2026-01-02 11:02:59	1.365		79	prime	1.02	60
2026-01-02 11:02:55	12.679	63,35,77,23,55,75,7,45,69,81	51	composite	1.02	60
2026-01-02 11:02:41	15.656	11,67,75,17,63,41,39,49,23,1	95	composite	1.02	60
2026-01-02 11:00:48	60.01	43,31,81,53,1,25,27,21,75,33,63,9,61,3,59,45,49,29,5,67,19,37,87,13,97,23,73,83,133,109,103,71,65,119,93,129,155,163,69,7,55	177	time	1.02	60
2026-01-02 10:59:45	32.57	61,63,15,7,35,19,25,43,39	87	composite	1.02	60
2026-01-02 10:59:10	3.375	1	51	composite	1.02	60
2026-01-02 10:54:26	52.198	37,3,81,47,59,83,53,11,77,45,27,31,35	97	prime	1.02	60
2026-01-02 10:53:29	3.259	79	69	composite	1.02	60
2026-01-02 09:18:56	6.197	75,37,55,35,49,13,51,53	19	prime	1.02	60
2026-01-02 09:18:43	44.628	5,57,11,49,17,7,55,79,37,13,71,53,39,41,19,81,75,109,107,67,45,1,69,125,87,117,33,31,133,3,141,43,47,113,149,111,15,123,103,93,143,27,163,9,29,95,119,97,25,181,135,159,157,175,59,199	203	composite	1.02	60
2026-01-02 09:17:58	21.313	77,49,83,17,67,23,53,61,35,31,63,73,55,41,65,25,101,27,5,57,85,89,115,71,69,3,129	105	composite	1.02	60
2026-01-02 09:17:36	9.356	49,19,25,9,5,43,27,61,93,63,65,3,13	97	prime	1.02	60
2026-01-02 09:17:26	5.227	15,59,45,65,49,3,69,71,85	51	composite	1.02	60
2026-01-02 09:17:20	0.481		47	prime	1.02	60
2026-01-02 09:17:19	0.956	49	27	composite	1.02	60
2026-01-02 09:17:17	2.397	35,45,43,17	15	composite	1.02	60
2026-01-02 09:17:14	5.975	23,57,31,41,85,5,49,43,11,27	15	composite	1.02	60
2026-01-02 09:17:06	31.335	41,3,33,77,17,39,13,25,11,55,53,67,31,47,95,23,29,111,85,49,65,83,101,73,113,93,103,91,131,81,125,43,147,109,35,63,163,127,145,79,5,45,155,9,21	119	composite	1.02	60
2026-01-02 09:16:34	4.711	45,73,67,33,23,39,61	51	composite	1.02	60
2026-01-02 09:16:28	6.704	73,51,21,55,75,67,31,37,53,7,93	23	prime	1.02	60
2026-01-02 09:16:21	2.71	55,21,11,31	51	composite	1.02	60
2026-01-02 09:16:15	33.206	29,39,67,21,55,75,61,77,7,19,17,91,1,3,101,99,25,27,63,51,79,107,57,89,53,81,85,137,65,143,131,23,149,135,119,93,127,133,165,47,173,33,125,73	157	prime	1.02	60
2026-01-02 09:15:41	8.181	37,27,15,31,65,49,79,69,35,43,71,91,95,55	93	composite	1.02	60
2026-01-02 09:15:33	5.209	9,37,61,85,59	57	composite	1.02	60
2026-01-02 09:06:17	34.869	31,19,51,79,17,27,43,81,67,47,39,63,53,89,61,107,83,13,37	93	composite	1.02	60
2026-01-02 09:05:40	4.502	73	49	composite	1.02	60

Time finished

Time taken

Sequence

Final number

Reason for ending

Difficulty

Max. number

Time allowed

2026-01-02 11:12:56

1.749

composite

1.02

2026-01-02 11:12:52

15.258

11,81,45,13,5,7,19,25,31,69

prime

1.02

2026-01-02 11:12:33

2.397

composite

1.02

2026-01-02 11:12:30

1.12

composite

1.02

2026-01-02 11:12:28

4.709

19,47,63

composite

1.02

2026-01-02 11:12:21

3.773

41,73

prime

1.02

2026-01-02 11:10:32

47.264

7,71,55,39,27,69,45,25,33,77,35,59,53,97,51,85,107,41,15,95,9,37,11,17,3,87

prime

1.02

2026-01-02 11:10:23

4.393

7,13

prime

1.02

2026-01-02 11:10:18

4.417

composite

1.02

2026-01-02 11:09:52

40.438

31,53,57,3,21,33,13,37,11,41,59,23,7,25,43,27,45,19,21,15,37,49,55

composite

1.02

2026-01-02 11:09:44

6.668

75,47

composite

1.02

2026-01-02 11:09:33

1.813

prime

1.02

2026-01-02 11:09:28

10.266

11,43,29,19,25,7

prime

1.02

2026-01-02 11:09:17

4.537

67,3

composite

1.02

2026-01-02 11:09:11

3.917

19,27

composite

1.02

2026-01-02 11:09:07

18.577

35,47,29,49,31,25

composite

1.02

2026-01-02 11:09:06

6.765

9,21,63

prime

1.02

2026-01-02 11:08:55

10.189

19,27,1,63,39

composite

1.02

2026-01-02 11:08:48

4.449

53,15,45

composite

1.02

2026-01-02 11:08:44

6.577

67,75,77,73

composite

1.02

2026-01-02 11:08:43

0.606

prime

1.02

2026-01-02 11:08:42

0.358

prime

1.02

2026-01-02 11:08:41

0.508

prime

1.02

2026-01-02 11:08:40

0.369

prime

1.02

2026-01-02 11:08:39

0.294

prime

1.02

2026-01-02 11:08:38

0.406

prime

1.02

2026-01-02 11:08:38

0.45

prime

1.02

2026-01-02 11:08:37

2.125

prime

1.02

2026-01-02 11:08:34

3.957

27,25

prime

1.02

2026-01-02 11:08:32

14.663

27,11,67,53,75,33,71,17

prime

1.02

2026-01-02 11:08:30

2.411

prime

1.02

2026-01-02 11:08:26

10.051

23,33,27,59,55

prime

1.02

2026-01-02 11:08:16

1.058

prime

1.02

2026-01-02 11:08:14

1.083

composite

1.02

2026-01-02 11:08:13

2.286

prime

1.02

2026-01-02 11:08:10

10.436

43,29,53,7,15,19

composite

1.02

2026-01-02 11:07:59

12.77

39,1,53,21,47,25,17,27,41

prime

1.02

2026-01-02 11:07:47

17.96

39,41,9

prime

1.02

2026-01-02 11:07:45

1.105

prime

1.02

2026-01-02 11:07:43

14.591

19,23,27,31,7,33,45

composite

1.02

2026-01-02 11:07:28

1.227

prime

1.02

2026-01-02 11:07:26

3.235

prime

1.02

2026-01-02 11:07:22

1.184

prime

1.02

2026-01-02 11:07:19

4.632

35,27,1,47

prime

1.02

2026-01-02 11:07:14

1.48

composite

1.02

2026-01-02 11:07:12

2.286

composite

1.02

2026-01-02 11:07:09

1.76

prime

1.02

2026-01-02 11:07:06

7.716

49,1,27,11,45

prime

1.02

2026-01-02 11:06:58

6.179

prime

1.02

2026-01-02 11:06:51

5.461

49,7

prime

1.02

2026-01-02 11:06:45

1.283

composite

1.02

2026-01-02 11:06:43

7.32

43,59,33,55,1

prime

1.02

2026-01-02 11:06:35

20.855

11,53,21,25,15,33,39,31,55,35,41,23,9

prime

1.02

2026-01-02 11:06:13

2.328

composite

1.02

2026-01-02 11:06:10

22.722

37,41,31,55,53,11,21,35,13,17,9,59,45

prime

1.02

2026-01-02 11:05:46

7.239

prime

1.02

2026-01-02 11:04:53

11.685

43,19,11,39,75,23,195,323

prime

1.26

2026-01-02 11:04:41

2.144

prime

1.26

2026-01-02 11:04:28

3.313

1,21,45

prime

1.02

2026-01-02 11:04:24

1.837

prime

1.02

2026-01-02 11:04:22

1.01

prime

1.02

2026-01-02 11:04:20

3.199

composite

1.02

2026-01-02 11:04:17

4.328

37,49

composite

1.02

2026-01-02 11:04:12

7.089

15,71,39,77,17

prime

1.02

2026-01-02 11:04:04

4.892

25,53,77

prime

1.02

2026-01-02 11:03:58

9.519

11,67,69,75,63,65,49

composite

1.02

2026-01-02 11:03:48

1.438

composite

1.02

2026-01-02 11:03:46

1.557

prime

1.02

2026-01-02 11:03:44

2.508

prime

1.02

2026-01-02 11:03:41

6.721

27,45

prime

1.02

2026-01-02 11:03:31

9.434

39,9,65,83,61,19,15

prime

1.02

2026-01-02 11:03:21

1.618

prime

1.02

2026-01-02 11:03:17

11.133

27,37

composite

1.02

2026-01-02 11:03:05

4.272

79,27,75

composite

1.02

2026-01-02 11:02:59

1.365

prime

1.02

2026-01-02 11:02:55

12.679

63,35,77,23,55,75,7,45,69,81

composite

1.02

2026-01-02 11:02:41

15.656

11,67,75,17,63,41,39,49,23,1

composite

1.02

2026-01-02 11:00:48

60.01

43,31,81,53,1,25,27,21,75,33,63,9,61,3,59,45,49,29,5,67,19,37,87,13,97,23,73,83,133,109,103,71,65,119,93,129,155,163,69,7,55

177

time

1.02

2026-01-02 10:59:45

32.57

61,63,15,7,35,19,25,43,39

composite

1.02

2026-01-02 10:59:10

3.375

composite

1.02

2026-01-02 10:54:26

52.198

37,3,81,47,59,83,53,11,77,45,27,31,35

prime

1.02

2026-01-02 10:53:29

3.259

composite

1.02

2026-01-02 09:18:56

6.197

75,37,55,35,49,13,51,53

prime

1.02

2026-01-02 09:18:43

44.628

5,57,11,49,17,7,55,79,37,13,71,53,39,41,19,81,75,109,107,67,45,1,69,125,87,117,33,31,133,3,141,43,47,113,149,111,15,123,103,93,143,27,163,9,29,95,119,97,25,181,135,159,157,175,59,199

203

composite

1.02

2026-01-02 09:17:58

21.313

77,49,83,17,67,23,53,61,35,31,63,73,55,41,65,25,101,27,5,57,85,89,115,71,69,3,129

105

composite

1.02

2026-01-02 09:17:36

9.356

49,19,25,9,5,43,27,61,93,63,65,3,13

prime

1.02

2026-01-02 09:17:26

5.227

15,59,45,65,49,3,69,71,85

composite

1.02

2026-01-02 09:17:20

0.481

prime

1.02

2026-01-02 09:17:19

0.956

composite

1.02

2026-01-02 09:17:17

2.397

35,45,43,17

composite

1.02

2026-01-02 09:17:14

5.975

23,57,31,41,85,5,49,43,11,27

composite

1.02

2026-01-02 09:17:06

31.335

41,3,33,77,17,39,13,25,11,55,53,67,31,47,95,23,29,111,85,49,65,83,101,73,113,93,103,91,131,81,125,43,147,109,35,63,163,127,145,79,5,45,155,9,21

119

composite

1.02

2026-01-02 09:16:34

4.711

45,73,67,33,23,39,61

composite

1.02

2026-01-02 09:16:28

6.704

73,51,21,55,75,67,31,37,53,7,93

prime

1.02

2026-01-02 09:16:21

2.71

55,21,11,31

composite

1.02

2026-01-02 09:16:15

33.206

29,39,67,21,55,75,61,77,7,19,17,91,1,3,101,99,25,27,63,51,79,107,57,89,53,81,85,137,65,143,131,23,149,135,119,93,127,133,165,47,173,33,125,73

157

prime

1.02

2026-01-02 09:15:41

8.181

37,27,15,31,65,49,79,69,35,43,71,91,95,55

composite

1.02

2026-01-02 09:15:33

5.209

9,37,61,85,59

composite

1.02

2026-01-02 09:06:17

34.869

31,19,51,79,17,27,43,81,67,47,39,63,53,89,61,107,83,13,37

composite

1.02

2026-01-02 09:05:40

4.502

composite

1.02

Stats for the "Is this prime?" game

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