Stats - the Is this prime? game

This page is updated at most once per minute. It was last updated at 2026-03-01T05:58:14+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

8197054 attempts

Reason for ending	Frequency
composite	4861903	59%
prime	3069748	37%
time	263972	3%

Final number	Reason for ending	Frequency
87	composite	944234	11.52%
51	composite	387673	4.73%
57	composite	384445	4.69%
39	composite	253748	3.1%
1	composite	250974	3.06%
63	composite	204809	2.5%
49	composite	201166	2.45%
69	composite	188591	2.3%
5	prime	187508	2.29%
27	composite	176402	2.15%
9	composite	176281	2.15%
59	prime	171477	2.09%
79	prime	163445	1.99%
67	prime	156478	1.91%
29	prime	153598	1.87%
47	prime	149839	1.83%
21	composite	147774	1.8%
61	prime	146584	1.79%
53	prime	145104	1.77%
77	composite	143868	1.76%

100 most recent attempts

Time finished	Time taken	Sequence	Final number	Reason for ending	Difficulty	Time allowed
2026-03-01 05:43:29	4.067	9,43	51	composite	1.02	60
2026-03-01 05:06:01	2.883	53	27	composite	1.02	60
2026-03-01 05:05:55	6.834		67	prime	1.02	60
2026-03-01 05:00:30	8.062	75,3,31,9,61,35,55	39	composite	1.02	60
2026-03-01 05:00:17	10.605	23,13,47,55,25,63,41	51	composite	1.02	60
2026-03-01 05:00:03	3.377	65,13	79	prime	1.02	60
2026-03-01 04:59:54	7.343	79,15,7,31	51	composite	1.02	60
2026-03-01 04:59:44	2.332		59	prime	1.02	60
2026-03-01 04:08:44	6.633	19	3	prime	1.02	60
2026-02-28 23:34:58	4.801	11,5,145,361	1271	composite	2	60
2026-02-28 23:34:32	3.398	47,85	81	composite	1.1	60
2026-02-28 23:23:48	60.06	7,37,1,33,63,15,51,21,93,67,59,31,95,69,103,57,73,45,19,39,11,65,29,9,81,91,55,13,43,83,127,121,97,17,3,89,61,159,107,145,77,173,141,119,187,71,111,191,137,5,181,175,203,133,131,41,201,117,101,149,251,205,259,197,215,253,113,151,49,85,171,123,27	165	time	1.02	60
2026-02-28 23:18:17	3.899	49,47,41	37	prime	1.02	60
2026-02-28 23:18:12	1.05		39	composite	1.02	60
2026-02-28 23:18:11	0.431		17	prime	1.02	60
2026-02-28 23:18:09	1.868	27,65	15	composite	1.02	60
2026-02-28 23:18:07	0.488		3	prime	1.02	60
2026-02-28 23:18:06	0.305	57	17	prime	1.02	60
2026-02-28 23:18:06	0.535		37	prime	1.02	60
2026-02-28 23:18:05	0.601		79	prime	1.02	60
2026-02-28 23:18:04	0.134		23	prime	1.02	60
2026-02-28 23:18:04	0.484	21,49	17	prime	1.02	60
2026-02-28 23:18:03	0.265		53	prime	1.02	60
2026-02-28 23:18:03	0.118		73	prime	1.02	60
2026-02-28 23:18:02	0.116		33	composite	1.02	60
2026-02-28 23:18:01	0.831	13	81	composite	1.02	60
2026-02-28 23:17:58	1.017	59,43,83,13,23,73	27	composite	1.02	60
2026-02-28 23:17:57	0.151		27	composite	1.02	60
2026-02-28 23:17:56	0.151		21	composite	1.02	60
2026-02-28 23:17:56	0.602	13,19,31	21	composite	1.02	60
2026-02-28 23:17:55	0.287	73	39	composite	1.02	60
2026-02-28 23:17:55	0.15		69	composite	1.02	60
2026-02-28 23:17:55	0.284	41	1	composite	1.02	60
2026-02-28 23:17:54	0.852	41	63	composite	1.02	60
2026-02-28 23:17:54	0.131		51	composite	1.02	60
2026-02-28 23:17:52	1.135	41	71	prime	1.02	60
2026-02-28 23:17:51	0.567		25	composite	1.02	60
2026-02-28 23:17:50	0.652		23	prime	1.02	60
2026-02-28 23:17:48	0.516		57	composite	1.02	60
2026-02-28 23:17:47	1.6	71	63	composite	1.02	60
2026-02-28 23:17:45	2.501	5	79	prime	1.02	60
2026-02-28 22:00:53	6.26	15	51	composite	1.02	60
2026-02-28 19:01:12	30.654	69,17,29,13,71,85,57,91,27,21,73,5,31,63,23,49,65,3,67,83,25,33,9,117,119,95,35,111,129,115,141,93,77	151	prime	1.02	60
2026-02-28 19:00:41	2.296	73	11	prime	1.02	60
2026-02-28 19:00:38	9.585	21,23,61,17,39,33,19,45,81,89,53,9,75,5	77	composite	1.02	60
2026-02-28 19:00:26	10.339	33,39,29,81,45,11,37,7,75,85,87,53	91	composite	1.02	60
2026-02-28 19:00:16	6.188	51,9,75,55,23,31	87	composite	1.02	60
2026-02-28 18:53:05	2.027	35,57	1	composite	1.02	60
2026-02-28 18:53:01	0.871		45	composite	1.02	60
2026-02-28 18:52:59	7.023	57,43,5,83,33,77,79,91	67	prime	1.02	60
2026-02-28 18:52:50	2.48	75,73	29	prime	1.02	60
2026-02-28 18:52:47	4.155	17,61,53,37	29	prime	1.02	60
2026-02-28 18:52:41	0.801		45	composite	1.02	60
2026-02-28 18:52:39	6.475	15,11,33,3,65,51,13,69,47	89	prime	1.02	60
2026-02-28 18:52:29	1.01		33	composite	1.02	60
2026-02-28 18:45:56	3.886	61,49,19,9,7	41	prime	1.02	60
2026-02-28 18:45:51	6.888	29,49,3,15,23,25,7,9,63	59	prime	1.02	60
2026-02-28 18:45:34	32.465	11,51,57,23,67,29,83,71,77,69,87,93,13,21,5,55,45,27,53,73,43,35,59,111,19,81,25,61,101,95,47,85,121,49	135	composite	1.02	60
2026-02-28 18:39:22	3.867	41,17,29,79	53	prime	1.02	60
2026-02-28 18:08:48	51.474	67,81,65,49,71,17,59,73,1,31,47,3,25,45,19,51,61,5,33,91,27,39,113,57,105,37,99,129,123,97,89	115	composite	1.02	60
2026-02-28 18:07:53	30.369	43,17,79,49,55,75,87,3,61,59,63,29,35,93,25,77,67,101,27,89,99	119	composite	1.02	60
2026-02-28 16:30:06	43.322	5,59,19,33,65,31,39,11,7,61,17,29,93,3,1,101,27,49,45,81,77,87,67,43,85,111,91,57,83	141	composite	1.02	60
2026-02-28 16:29:04	10.162	23,53,37,19,85,41	89	prime	1.02	60
2026-02-28 16:29:03	36.122	75,11,49,41,53,55,45,71,79,35,33,99,43	101	prime	1.02	60
2026-02-28 16:28:54	19.899	75,71,77,9,53,1,57,31,85,35,87,93	91	composite	1.02	60
2026-02-28 16:28:51	2.285	69	5	prime	1.02	60
2026-02-28 16:28:47	7.91		41	prime	1.02	60
2026-02-28 16:28:37	6.623	1,67	47	prime	1.02	60
2026-02-28 16:28:28	12.889	57,71,65,49,29	61	prime	1.02	60
2026-02-28 16:28:24	9.022	43,49,55	53	prime	1.02	60
2026-02-28 16:28:13	6.175	77,7,1	71	prime	1.02	60
2026-02-28 16:27:34	60.1	73,23,55,13,25,3,19,69,41,37,71,43,7,81,101,5,109,79,107,57,15,113,9,83,45,47,27	121	time	1.02	60
2026-02-28 16:27:14	50.148	17,73,49,65,21,31,41,9,27,87,83,93,13,63,99,103,35,15,57,19,105,75	47	prime	1.02	60
2026-02-28 16:26:32	1.309		51	composite	1.02	60
2026-02-28 16:26:29	7.761	49,45,31,75,13	5	prime	1.02	60
2026-02-28 16:26:22	7.443	31,3,59,81	71	prime	1.02	60
2026-02-28 16:26:19	15.352		43	prime	1.02	60
2026-02-28 16:26:14	0.791		69	composite	1.02	60
2026-02-28 16:26:14	16.005	39,23,17,19,3,81	61	prime	1.02	60
2026-02-28 16:26:10	2.613		23	prime	1.02	60
2026-02-28 16:26:02	3.086	9	61	prime	1.02	60
2026-02-28 16:26:00	44.295	77,33,73,25,67,23,3,15,57,89,87,69,49	17	prime	1.02	60
2026-02-28 16:25:57	4.165	7,73	59	prime	1.02	60
2026-02-28 16:25:54	2.767	45	1	composite	1.02	60
2026-02-28 16:25:51	24.926	47,45,71,75,7,79,35,17,33,95,89,91,83	97	prime	1.02	60
2026-02-28 16:25:49	4.275	35	59	prime	1.02	60
2026-02-28 16:25:42	10.494	69	71	prime	1.02	60
2026-02-28 16:25:24	10.435	71,17,5,45,81,69,11	59	prime	1.02	60
2026-02-28 16:25:21	8.541	75,61	5	prime	1.02	60
2026-02-28 16:25:13	1.697		61	prime	1.02	60
2026-02-28 16:25:10	12.149	63,75,65,79,73,23	61	prime	1.02	60
2026-02-28 16:24:57	0.715		31	prime	1.02	60
2026-02-28 16:24:56	1.248		39	composite	1.02	60
2026-02-28 16:24:53	4.49	37	51	composite	1.02	60
2026-02-28 16:24:47	4.11	1	3	prime	1.02	60
2026-02-28 16:24:30	28.229	47,55,7,17,77,37,41	27	composite	1.02	60
2026-02-28 16:24:09	16.456	51,23,55,61,33,27,13,9,81,15,79	97	prime	1.02	60
2026-02-28 16:23:55	22.552	63,45,51,9,17,71,33	91	composite	1.02	60
2026-02-28 16:23:51	2.33		57	composite	1.02	60
2026-02-28 15:40:44	1.877	31,23	1	composite	1.02	60

Time finished

Time taken

Sequence

Final number

Reason for ending

Difficulty

Max. number

Time allowed

2026-03-01 05:43:29

4.067

9,43

composite

1.02

2026-03-01 05:06:01

2.883

composite

1.02

2026-03-01 05:05:55

6.834

prime

1.02

2026-03-01 05:00:30

8.062

75,3,31,9,61,35,55

composite

1.02

2026-03-01 05:00:17

10.605

23,13,47,55,25,63,41

composite

1.02

2026-03-01 05:00:03

3.377

65,13

prime

1.02

2026-03-01 04:59:54

7.343

79,15,7,31

composite

1.02

2026-03-01 04:59:44

2.332

prime

1.02

2026-03-01 04:08:44

6.633

prime

1.02

2026-02-28 23:34:58

4.801

11,5,145,361

1271

composite

2026-02-28 23:34:32

3.398

47,85

composite

1.1

2026-02-28 23:23:48

60.06

7,37,1,33,63,15,51,21,93,67,59,31,95,69,103,57,73,45,19,39,11,65,29,9,81,91,55,13,43,83,127,121,97,17,3,89,61,159,107,145,77,173,141,119,187,71,111,191,137,5,181,175,203,133,131,41,201,117,101,149,251,205,259,197,215,253,113,151,49,85,171,123,27

165

time

1.02

2026-02-28 23:18:17

3.899

49,47,41

prime

1.02

2026-02-28 23:18:12

1.05

composite

1.02

2026-02-28 23:18:11

0.431

prime

1.02

2026-02-28 23:18:09

1.868

27,65

composite

1.02

2026-02-28 23:18:07

0.488

prime

1.02

2026-02-28 23:18:06

0.305

prime

1.02

2026-02-28 23:18:06

0.535

prime

1.02

2026-02-28 23:18:05

0.601

prime

1.02

2026-02-28 23:18:04

0.134

prime

1.02

2026-02-28 23:18:04

0.484

21,49

prime

1.02

2026-02-28 23:18:03

0.265

prime

1.02

2026-02-28 23:18:03

0.118

prime

1.02

2026-02-28 23:18:02

0.116

composite

1.02

2026-02-28 23:18:01

0.831

composite

1.02

2026-02-28 23:17:58

1.017

59,43,83,13,23,73

composite

1.02

2026-02-28 23:17:57

0.151

composite

1.02

2026-02-28 23:17:56

0.151

composite

1.02

2026-02-28 23:17:56

0.602

13,19,31

composite

1.02

2026-02-28 23:17:55

0.287

composite

1.02

2026-02-28 23:17:55

0.15

composite

1.02

2026-02-28 23:17:55

0.284

composite

1.02

2026-02-28 23:17:54

0.852

composite

1.02

2026-02-28 23:17:54

0.131

composite

1.02

2026-02-28 23:17:52

1.135

prime

1.02

2026-02-28 23:17:51

0.567

composite

1.02

2026-02-28 23:17:50

0.652

prime

1.02

2026-02-28 23:17:48

0.516

composite

1.02

2026-02-28 23:17:47

1.6

composite

1.02

2026-02-28 23:17:45

2.501

prime

1.02

2026-02-28 22:00:53

6.26

composite

1.02

2026-02-28 19:01:12

30.654

69,17,29,13,71,85,57,91,27,21,73,5,31,63,23,49,65,3,67,83,25,33,9,117,119,95,35,111,129,115,141,93,77

151

prime

1.02

2026-02-28 19:00:41

2.296

prime

1.02

2026-02-28 19:00:38

9.585

21,23,61,17,39,33,19,45,81,89,53,9,75,5

composite

1.02

2026-02-28 19:00:26

10.339

33,39,29,81,45,11,37,7,75,85,87,53

composite

1.02

2026-02-28 19:00:16

6.188

51,9,75,55,23,31

composite

1.02

2026-02-28 18:53:05

2.027

35,57

composite

1.02

2026-02-28 18:53:01

0.871

composite

1.02

2026-02-28 18:52:59

7.023

57,43,5,83,33,77,79,91

prime

1.02

2026-02-28 18:52:50

2.48

75,73

prime

1.02

2026-02-28 18:52:47

4.155

17,61,53,37

prime

1.02

2026-02-28 18:52:41

0.801

composite

1.02

2026-02-28 18:52:39

6.475

15,11,33,3,65,51,13,69,47

prime

1.02

2026-02-28 18:52:29

1.01

composite

1.02

2026-02-28 18:45:56

3.886

61,49,19,9,7

prime

1.02

2026-02-28 18:45:51

6.888

29,49,3,15,23,25,7,9,63

prime

1.02

2026-02-28 18:45:34

32.465

11,51,57,23,67,29,83,71,77,69,87,93,13,21,5,55,45,27,53,73,43,35,59,111,19,81,25,61,101,95,47,85,121,49

135

composite

1.02

2026-02-28 18:39:22

3.867

41,17,29,79

prime

1.02

2026-02-28 18:08:48

51.474

67,81,65,49,71,17,59,73,1,31,47,3,25,45,19,51,61,5,33,91,27,39,113,57,105,37,99,129,123,97,89

115

composite

1.02

2026-02-28 18:07:53

30.369

43,17,79,49,55,75,87,3,61,59,63,29,35,93,25,77,67,101,27,89,99

119

composite

1.02

2026-02-28 16:30:06

43.322

5,59,19,33,65,31,39,11,7,61,17,29,93,3,1,101,27,49,45,81,77,87,67,43,85,111,91,57,83

141

composite

1.02

2026-02-28 16:29:04

10.162

23,53,37,19,85,41

prime

1.02

2026-02-28 16:29:03

36.122

75,11,49,41,53,55,45,71,79,35,33,99,43

101

prime

1.02

2026-02-28 16:28:54

19.899

75,71,77,9,53,1,57,31,85,35,87,93

composite

1.02

2026-02-28 16:28:51

2.285

prime

1.02

2026-02-28 16:28:47

7.91

prime

1.02

2026-02-28 16:28:37

6.623

1,67

prime

1.02

2026-02-28 16:28:28

12.889

57,71,65,49,29

prime

1.02

2026-02-28 16:28:24

9.022

43,49,55

prime

1.02

2026-02-28 16:28:13

6.175

77,7,1

prime

1.02

2026-02-28 16:27:34

60.1

73,23,55,13,25,3,19,69,41,37,71,43,7,81,101,5,109,79,107,57,15,113,9,83,45,47,27

121

time

1.02

2026-02-28 16:27:14

50.148

17,73,49,65,21,31,41,9,27,87,83,93,13,63,99,103,35,15,57,19,105,75

prime

1.02

2026-02-28 16:26:32

1.309

composite

1.02

2026-02-28 16:26:29

7.761

49,45,31,75,13

prime

1.02

2026-02-28 16:26:22

7.443

31,3,59,81

prime

1.02

2026-02-28 16:26:19

15.352

prime

1.02

2026-02-28 16:26:14

0.791

composite

1.02

2026-02-28 16:26:14

16.005

39,23,17,19,3,81

prime

1.02

2026-02-28 16:26:10

2.613

prime

1.02

2026-02-28 16:26:02

3.086

prime

1.02

2026-02-28 16:26:00

44.295

77,33,73,25,67,23,3,15,57,89,87,69,49

prime

1.02

2026-02-28 16:25:57

4.165

7,73

prime

1.02

2026-02-28 16:25:54

2.767

composite

1.02

2026-02-28 16:25:51

24.926

47,45,71,75,7,79,35,17,33,95,89,91,83

prime

1.02

2026-02-28 16:25:49

4.275

prime

1.02

2026-02-28 16:25:42

10.494

prime

1.02

2026-02-28 16:25:24

10.435

71,17,5,45,81,69,11

prime

1.02

2026-02-28 16:25:21

8.541

75,61

prime

1.02

2026-02-28 16:25:13

1.697

prime

1.02

2026-02-28 16:25:10

12.149

63,75,65,79,73,23

prime

1.02

2026-02-28 16:24:57

0.715

prime

1.02

2026-02-28 16:24:56

1.248

composite

1.02

2026-02-28 16:24:53

4.49

composite

1.02

2026-02-28 16:24:47

4.11

prime

1.02

2026-02-28 16:24:30

28.229

47,55,7,17,77,37,41

composite

1.02

2026-02-28 16:24:09

16.456

51,23,55,61,33,27,13,9,81,15,79

prime

1.02

2026-02-28 16:23:55

22.552

63,45,51,9,17,71,33

composite

1.02

2026-02-28 16:23:51

2.33

composite

1.02

2026-02-28 15:40:44

1.877

31,23

composite

1.02

Stats for the "Is this prime?" game

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