Stats - the Is this prime? game

This page is updated at most once per minute. It was last updated at 2026-09-20T21:29:18+00:00.

You can download a dump of every attempt at the game in tab-separated values format: dump-2026-03-08.zip (137MB)

All-time stats

8504364 attempts

Reason for ending	Frequency
composite	5006381	59%
prime	3226828	38%
time	269724	3%

Final number	Reason for ending	Frequency
87	composite	948821	11.16%
51	composite	400151	4.71%
57	composite	397077	4.67%
39	composite	262682	3.09%
1	composite	258957	3.04%
63	composite	212347	2.5%
49	composite	208386	2.45%
5	prime	196089	2.31%
69	composite	196047	2.31%
27	composite	183018	2.15%
9	composite	182587	2.15%
59	prime	179713	2.11%
79	prime	171536	2.02%
67	prime	163244	1.92%
29	prime	161417	1.9%
47	prime	157380	1.85%
61	prime	153966	1.81%
21	composite	153705	1.81%
53	prime	152673	1.8%
77	composite	149426	1.76%

100 most recent attempts

Time finished	Time taken	Sequence	Final number	Reason for ending	Difficulty	Time allowed
2026-09-20 20:54:03	60.094	45,37,75,79,65,33,7,55,77,15,19,95,31,93,83,67,105,39,63,11,25,89,101	47	time	1.02	60
2026-09-20 20:53:01	28.886	73,39	57	composite	1.02	60
2026-09-20 20:52:31	1.902		1	composite	1.02	60
2026-09-20 20:51:48	12.677	55,1,49,65,83,59,75,3	93	composite	1.02	60
2026-09-20 20:51:33	0.697		49	composite	1.02	60
2026-09-20 20:51:32	1.052	37	69	composite	1.02	60
2026-09-20 20:51:30	1.817	79	67	prime	1.02	60
2026-09-20 20:51:28	3.08	41	39	composite	1.02	60
2026-09-20 20:51:24	1.085		27	composite	1.02	60
2026-09-20 20:51:22	0.682		55	composite	1.02	60
2026-09-20 20:51:21	10.964	41,37,3,13	39	composite	1.02	60
2026-09-20 20:51:09	4.815	47,1,55	49	composite	1.02	60
2026-09-20 20:51:03	0.815		63	composite	1.02	60
2026-09-20 20:51:02	3.685	11,59	49	composite	1.02	60
2026-09-20 20:50:58	0.716		21	composite	1.02	60
2026-09-20 20:50:56	3.049	7,73	81	composite	1.02	60
2026-09-20 20:50:52	4.247	21,29	9	composite	1.02	60
2026-09-20 20:50:47	0.953		39	composite	1.02	60
2026-09-20 20:50:46	9.15	11,59,41,45,75,1	51	composite	1.02	60
2026-09-20 20:50:36	2.783	61	5	prime	1.02	60
2026-09-20 20:50:32	3.74		51	composite	1.02	60
2026-09-20 20:50:28	22.839	59,21,7,41,23,29,3,85,67,83,27,95	81	composite	1.02	60
2026-09-20 20:50:04	4.828	15,45,53	39	composite	1.02	60
2026-09-20 20:49:59	1.752	35	81	composite	1.02	60
2026-09-20 20:49:56	1.167		35	composite	1.02	60
2026-09-20 20:49:54	2.819	29	5	prime	1.02	60
2026-09-20 20:49:13	47.371	73,47,7,65,3,67,71,79,21,15,35,25,81,97,9,103,31,41,61	111	composite	1.02	60
2026-09-20 20:48:25	1.923	53	39	composite	1.02	60
2026-09-20 20:48:22	2.983	53	27	composite	1.02	60
2026-09-20 20:48:18	7.018	25,19,1	49	composite	1.02	60
2026-09-20 20:48:11	2.417	35,17,75	45	composite	1.02	60
2026-09-20 20:48:08	0.451		11	prime	1.02	60
2026-09-20 20:48:07	1.59	11,55,61	29	prime	1.02	60
2026-09-20 20:48:05	0.301		49	composite	1.02	60
2026-09-20 20:48:04	0.881	61	77	composite	1.02	60
2026-09-20 20:48:03	0.3		69	composite	1.02	60
2026-09-20 20:48:02	0.683		65	composite	1.02	60
2026-09-20 20:48:01	0.85		59	prime	1.02	60
2026-09-20 20:48:00	0.43		15	composite	1.02	60
2026-09-20 20:47:59	1.79	3,27,17	31	prime	1.02	60
2026-09-20 20:47:56	1.899	25,3,75	49	composite	1.02	60
2026-09-20 20:47:54	0.545		31	prime	1.02	60
2026-09-20 20:47:52	2.12	39	69	composite	1.02	60
2026-09-20 20:47:50	0.264		9	composite	1.02	60
2026-09-20 20:47:49	0.531	53	29	prime	1.02	60
2026-09-20 20:47:48	0.25		69	composite	1.02	60
2026-09-20 20:47:47	0.802	59,65	69	composite	1.02	60
2026-09-20 20:47:46	0.917	51	81	composite	1.02	60
2026-09-20 20:47:46	0.385		57	composite	1.02	60
2026-09-20 20:47:44	0.681		59	prime	1.02	60
2026-09-20 20:47:42	2.985	65,13,5,55	57	composite	1.02	60
2026-09-20 20:47:38	3.468	17,13	81	composite	1.02	60
2026-09-20 20:47:34	2.351	37	63	composite	1.02	60
2026-09-20 20:47:31	0.698		21	composite	1.02	60
2026-09-20 20:47:30	3.136	29,25	69	composite	1.02	60
2026-09-20 20:47:26	1.535		39	composite	1.02	60
2026-09-20 20:47:24	8.711	37,47,67,25,17,45	69	composite	1.02	60
2026-09-20 20:47:14	2.866	79,55	27	composite	1.02	60
2026-09-20 20:47:11	1.48	3	1	composite	1.02	60
2026-09-20 20:47:09	4.516	13,7,35	81	composite	1.02	60
2026-09-20 20:47:03	3.531	41,37	21	composite	1.02	60
2026-09-20 20:46:27	35.5	77,55,45,53,15,41,3,71,27	39	composite	1.02	60
2026-09-20 20:45:50	5.348	5	27	composite	1.02	60
2026-09-20 20:45:44	12.845	47	69	composite	1.02	60
2026-09-20 20:45:31	5.652	63	49	composite	1.02	60
2026-09-20 20:45:02	12.715	47,37,13,55,33,7,9	63	composite	1.02	60
2026-09-20 20:44:49	2.633		51	composite	1.02	60
2026-09-20 20:44:46	4.163	65	39	composite	1.02	60
2026-09-20 20:44:41	7.504	79,75	27	composite	1.02	60
2026-09-20 20:44:32	5.438	37	13	prime	1.02	60
2026-09-20 20:44:26	7.646	11,43,71,77,73	63	composite	1.02	60
2026-09-20 20:44:18	1.635		57	composite	1.02	60
2026-09-20 20:44:15	2.404	19	49	composite	1.02	60
2026-09-20 20:44:12	4.2	45,67,41	9	composite	1.02	60
2026-09-20 20:43:50	18.54	15,75,71,67,53,41,55,11	93	composite	1.02	60
2026-09-20 20:43:31	0.782		21	composite	1.02	60
2026-09-20 20:43:29	5.53	7,3,29	57	composite	1.02	60
2026-09-20 20:43:23	12.031	17,41,73,43,37,31,59	49	composite	1.02	60
2026-09-20 20:43:10	5.44	17,45	21	composite	1.02	60
2026-09-20 20:43:04	2.644	45	77	composite	1.02	60
2026-09-20 20:43:00	7.57	11,13,35,67	9	composite	1.02	60
2026-09-20 20:40:56	2.367	13,9,59,25	77	composite	1.02	60
2026-09-20 20:40:53	0.947	57	65	composite	1.02	60
2026-09-20 20:40:52	1.566		23	prime	1.02	60
2026-09-20 20:40:49	0.602	65	49	composite	1.02	60
2026-09-20 20:40:48	0.911	15	37	prime	1.02	60
2026-09-20 20:40:46	1.166	29,57	69	composite	1.02	60
2026-09-20 20:40:45	1.122	73	47	prime	1.02	60
2026-09-20 20:40:43	1.771	47,49,59	71	prime	1.02	60
2026-09-20 20:40:41	2.934	29,77,59,45,43	61	prime	1.02	60
2026-09-20 20:40:38	4.988	17,75,59	81	composite	1.02	60
2026-09-20 20:40:32	2.184		57	composite	1.02	60
2026-09-20 20:40:29	1.001		1	composite	1.02	60
2026-09-20 20:40:27	3.942	41,37	5	prime	1.02	60
2026-09-20 20:40:20	6.368	11,15,55,75	63	composite	1.02	60
2026-09-20 20:40:09	12.63	65,3,23,19,11,85,75	5	prime	1.02	60
2026-09-20 20:39:56	9.051	33,15,17,83,7	11	prime	1.02	60
2026-09-20 20:39:46	3.469	49	5	prime	1.02	60
2026-09-20 20:39:39	2.918	25,19,15,47,1	75	composite	1.02	60
2026-09-20 20:39:36	0.518		41	prime	1.02	60

Time finished

Time taken

Sequence

Final number

Reason for ending

Difficulty

Max. number

Time allowed

2026-09-20 20:54:03

60.094

45,37,75,79,65,33,7,55,77,15,19,95,31,93,83,67,105,39,63,11,25,89,101

time

1.02

2026-09-20 20:53:01

28.886

73,39

composite

1.02

2026-09-20 20:52:31

1.902

composite

1.02

2026-09-20 20:51:48

12.677

55,1,49,65,83,59,75,3

composite

1.02

2026-09-20 20:51:33

0.697

composite

1.02

2026-09-20 20:51:32

1.052

composite

1.02

2026-09-20 20:51:30

1.817

prime

1.02

2026-09-20 20:51:28

3.08

composite

1.02

2026-09-20 20:51:24

1.085

composite

1.02

2026-09-20 20:51:22

0.682

composite

1.02

2026-09-20 20:51:21

10.964

41,37,3,13

composite

1.02

2026-09-20 20:51:09

4.815

47,1,55

composite

1.02

2026-09-20 20:51:03

0.815

composite

1.02

2026-09-20 20:51:02

3.685

11,59

composite

1.02

2026-09-20 20:50:58

0.716

composite

1.02

2026-09-20 20:50:56

3.049

7,73

composite

1.02

2026-09-20 20:50:52

4.247

21,29

composite

1.02

2026-09-20 20:50:47

0.953

composite

1.02

2026-09-20 20:50:46

9.15

11,59,41,45,75,1

composite

1.02

2026-09-20 20:50:36

2.783

prime

1.02

2026-09-20 20:50:32

3.74

composite

1.02

2026-09-20 20:50:28

22.839

59,21,7,41,23,29,3,85,67,83,27,95

composite

1.02

2026-09-20 20:50:04

4.828

15,45,53

composite

1.02

2026-09-20 20:49:59

1.752

composite

1.02

2026-09-20 20:49:56

1.167

composite

1.02

2026-09-20 20:49:54

2.819

prime

1.02

2026-09-20 20:49:13

47.371

73,47,7,65,3,67,71,79,21,15,35,25,81,97,9,103,31,41,61

111

composite

1.02

2026-09-20 20:48:25

1.923

composite

1.02

2026-09-20 20:48:22

2.983

composite

1.02

2026-09-20 20:48:18

7.018

25,19,1

composite

1.02

2026-09-20 20:48:11

2.417

35,17,75

composite

1.02

2026-09-20 20:48:08

0.451

prime

1.02

2026-09-20 20:48:07

1.59

11,55,61

prime

1.02

2026-09-20 20:48:05

0.301

composite

1.02

2026-09-20 20:48:04

0.881

composite

1.02

2026-09-20 20:48:03

0.3

composite

1.02

2026-09-20 20:48:02

0.683

composite

1.02

2026-09-20 20:48:01

0.85

prime

1.02

2026-09-20 20:48:00

0.43

composite

1.02

2026-09-20 20:47:59

1.79

3,27,17

prime

1.02

2026-09-20 20:47:56

1.899

25,3,75

composite

1.02

2026-09-20 20:47:54

0.545

prime

1.02

2026-09-20 20:47:52

2.12

composite

1.02

2026-09-20 20:47:50

0.264

composite

1.02

2026-09-20 20:47:49

0.531

prime

1.02

2026-09-20 20:47:48

0.25

composite

1.02

2026-09-20 20:47:47

0.802

59,65

composite

1.02

2026-09-20 20:47:46

0.917

composite

1.02

2026-09-20 20:47:46

0.385

composite

1.02

2026-09-20 20:47:44

0.681

prime

1.02

2026-09-20 20:47:42

2.985

65,13,5,55

composite

1.02

2026-09-20 20:47:38

3.468

17,13

composite

1.02

2026-09-20 20:47:34

2.351

composite

1.02

2026-09-20 20:47:31

0.698

composite

1.02

2026-09-20 20:47:30

3.136

29,25

composite

1.02

2026-09-20 20:47:26

1.535

composite

1.02

2026-09-20 20:47:24

8.711

37,47,67,25,17,45

composite

1.02

2026-09-20 20:47:14

2.866

79,55

composite

1.02

2026-09-20 20:47:11

1.48

composite

1.02

2026-09-20 20:47:09

4.516

13,7,35

composite

1.02

2026-09-20 20:47:03

3.531

41,37

composite

1.02

2026-09-20 20:46:27

35.5

77,55,45,53,15,41,3,71,27

composite

1.02

2026-09-20 20:45:50

5.348

composite

1.02

2026-09-20 20:45:44

12.845

composite

1.02

2026-09-20 20:45:31

5.652

composite

1.02

2026-09-20 20:45:02

12.715

47,37,13,55,33,7,9

composite

1.02

2026-09-20 20:44:49

2.633

composite

1.02

2026-09-20 20:44:46

4.163

composite

1.02

2026-09-20 20:44:41

7.504

79,75

composite

1.02

2026-09-20 20:44:32

5.438

prime

1.02

2026-09-20 20:44:26

7.646

11,43,71,77,73

composite

1.02

2026-09-20 20:44:18

1.635

composite

1.02

2026-09-20 20:44:15

2.404

composite

1.02

2026-09-20 20:44:12

4.2

45,67,41

composite

1.02

2026-09-20 20:43:50

18.54

15,75,71,67,53,41,55,11

composite

1.02

2026-09-20 20:43:31

0.782

composite

1.02

2026-09-20 20:43:29

5.53

7,3,29

composite

1.02

2026-09-20 20:43:23

12.031

17,41,73,43,37,31,59

composite

1.02

2026-09-20 20:43:10

5.44

17,45

composite

1.02

2026-09-20 20:43:04

2.644

composite

1.02

2026-09-20 20:43:00

7.57

11,13,35,67

composite

1.02

2026-09-20 20:40:56

2.367

13,9,59,25

composite

1.02

2026-09-20 20:40:53

0.947

composite

1.02

2026-09-20 20:40:52

1.566

prime

1.02

2026-09-20 20:40:49

0.602

composite

1.02

2026-09-20 20:40:48

0.911

prime

1.02

2026-09-20 20:40:46

1.166

29,57

composite

1.02

2026-09-20 20:40:45

1.122

prime

1.02

2026-09-20 20:40:43

1.771

47,49,59

prime

1.02

2026-09-20 20:40:41

2.934

29,77,59,45,43

prime

1.02

2026-09-20 20:40:38

4.988

17,75,59

composite

1.02

2026-09-20 20:40:32

2.184

composite

1.02

2026-09-20 20:40:29

1.001

composite

1.02

2026-09-20 20:40:27

3.942

41,37

prime

1.02

2026-09-20 20:40:20

6.368

11,15,55,75

composite

1.02

2026-09-20 20:40:09

12.63

65,3,23,19,11,85,75

prime

1.02

2026-09-20 20:39:56

9.051

33,15,17,83,7

prime

1.02

2026-09-20 20:39:46

3.469

prime

1.02

2026-09-20 20:39:39

2.918

25,19,15,47,1

composite

1.02

2026-09-20 20:39:36

0.518

prime

1.02

Stats for the "Is this prime?" game

All-time stats

100 most recent attempts