Stats - the Is this prime? game

This page is updated at most once per minute. It was last updated at 2026-09-09T22:42:27+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

8459201 attempts

Reason for ending	Frequency
composite	4980295	59%
prime	3209575	38%
time	267900	3%

Final number	Reason for ending	Frequency
87	composite	948022	11.21%
51	composite	397850	4.7%
57	composite	394815	4.67%
39	composite	260959	3.08%
1	composite	257535	3.04%
63	composite	210985	2.49%
49	composite	207001	2.45%
5	prime	195053	2.31%
69	composite	194554	2.3%
27	composite	181757	2.15%
9	composite	181309	2.14%
59	prime	178727	2.11%
79	prime	170631	2.02%
67	prime	162645	1.92%
29	prime	160482	1.9%
47	prime	156549	1.85%
61	prime	153160	1.81%
21	composite	152581	1.8%
53	prime	151788	1.79%
77	composite	148422	1.75%

100 most recent attempts

Time finished	Time taken	Sequence	Final number	Reason for ending	Difficulty	Time allowed
2026-09-09 21:48:55	30.03	55,77,53,69,49,9,51,45,79,31,11,91	15	composite	1.02	60
2026-09-09 21:48:21	22.489	33,81,67,47,25,51,63	79	prime	1.02	60
2026-09-09 21:08:24	60.025	73,53,45,51,21,23,39,17,69,59,79,87,1,37,3,95,75,111,57,93,91,103,13,85,89,127,99,9,63,55,7,25,67,117,19,5,131,137,135,35,83,105,15,65,171,173,141,157,201,107,169,163	221	time	1.02	60
2026-09-09 21:07:23	6.653	73,67,81,23,49,19,51,47	41	prime	1.02	60
2026-09-09 21:07:16	10.903	11,51,69,81,59,31,27,87,39,71,37	29	prime	1.02	60
2026-09-09 21:07:05	21.368	33,39,45,51,15,81,19,25,11,21,43,65,85,77,31,23,73,71,55,41,57,99,49,83	117	composite	1.02	60
2026-09-09 21:06:42	18.748	73,75,23,79,25,7,81,19,47,9,59,29,63,17,71,35,87,61,31,37,103	97	prime	1.02	60
2026-09-09 20:44:45	50.516	45,31,71,29,27,77,39,89,35,85,17,13,9	67	prime	1.02	60
2026-09-09 20:43:41	56.97	63,29,57,39,55,77	1	composite	1.02	60
2026-09-09 19:36:06	7.698	23,37,33,11,21,81,51	89	prime	1.02	60
2026-09-09 19:35:56	3.158	25	61	prime	1.02	60
2026-09-09 19:21:21	14.46	41,55,37,19,1,23,11,21,63	51	composite	1.02	60
2026-09-09 19:21:05	1.744	31	5	prime	1.02	60
2026-09-09 19:20:52	3.307	39,67	59	prime	1.02	60
2026-09-09 19:20:45	6.928	17,11,81,29,23,13	43	prime	1.02	60
2026-09-09 19:19:51	19.098	55,3,75,13,59,61,29,33,53,27,11,1,45	73	prime	1.02	60
2026-09-09 19:19:31	5.449	77,25,59	69	composite	1.02	60
2026-09-09 19:19:22	2.763	25	63	composite	1.02	60
2026-09-09 19:04:08	4.605	55,65,19	71	prime	1.02	60
2026-09-09 19:03:58	1.289		51	composite	1.02	60
2026-09-09 19:03:52	3.071		73	prime	0	676742000000000
2026-09-09 19:03:47	4.813	65	0	prime	0	676742000000000
2026-09-09 19:03:38	5.615	17	0	prime	0	676742000000000
2026-09-09 19:03:29	1.676		65	composite	0	676742000000000
2026-09-09 19:03:23	13.365	41	0	prime	0	676742000000000
2026-09-09 19:02:59	21.442	35,25,23,85,29,73,55,59,49,3,17	37	prime	1.02	60
2026-09-09 19:02:50	15.989	3,1,25	9	composite	0.94	60
2026-09-09 19:02:33	2.181	35	27	composite	0.94	60
2026-09-09 19:02:30	0.439		33	composite	0.94	60
2026-09-09 19:02:29	0.469		61	prime	0.94	60
2026-09-09 19:02:28	3.455		51	composite	0.94	60
2026-09-09 19:02:23	7.356	39,25	35	composite	0.94	60
2026-09-09 19:02:15	1.566		7	prime	0.94	60
2026-09-09 19:02:13	6.046	59,63,5	33	composite	0.94	60
2026-09-09 19:02:05	2.091		37	prime	0.94	60
2026-09-09 19:02:02	3.84	35,65	51	composite	0.94	60
2026-09-09 19:01:57	3.174	79	47	prime	0.94	60
2026-09-09 19:01:18	8.35	61,19,81,77,83,55,23	69	composite	1.02	60
2026-09-09 18:58:43	18.032	43,75,81,77,65,53,1,3,7,39,67,99,89	79	prime	1.02	60
2026-09-09 18:58:21	9.729	69,1,49,53,19	79	prime	1.02	60
2026-09-09 18:58:10	4.687	29,73	43	prime	1.02	60
2026-09-09 18:55:46	4.793	53,31	19	prime	1.02	60
2026-09-09 18:52:57	60.744		7	time	0.94	60
2026-09-09 18:51:55	2.53	49,3	43	prime	0.94	60
2026-09-09 18:51:16	16.055	67,75,43,73,63,65,41,45,49,29	81	composite	1.02	60
2026-09-09 18:51:00	2.623	27	1	composite	1.02	60
2026-09-09 18:46:52	60.268		9	time	1.02	60
2026-09-09 18:45:48	2.275		51	composite	1.02	60
2026-09-09 18:45:45	1.899		51	composite	1.02	60
2026-09-09 18:45:40	6.497	55,73	69	composite	1.02	60
2026-09-09 18:45:33	23.773	23	79	prime	1.02	60
2026-09-09 18:45:01	10.678	13,81,29,9,31,43,79	41	prime	1.02	60
2026-09-09 18:44:50	1.39		57	composite	1.02	60
2026-09-09 18:44:46	5.061	11,17,51,41	73	prime	1.02	60
2026-09-09 18:44:35	4.713	7,41	77	composite	1.02	60
2026-09-09 18:44:07	1.391		29	prime	1.02	60
2026-09-09 18:43:48	60.1	19,11,81	7	time	1.02	60
2026-09-09 18:42:47	5.311	19,47,1	21	composite	1.02	60
2026-09-09 18:42:41	30.375	33,17	51	composite	1.02	60
2026-09-09 18:42:10	4.624	67	45	composite	1.02	60
2026-09-09 18:42:05	1.877		41	prime	1.02	60
2026-09-09 18:42:02	1.127		39	composite	1.02	60
2026-09-09 18:42:00	5.23	29,13,65	49	composite	1.02	60
2026-09-09 18:41:53	5.4	9,45,75	77	composite	1.02	60
2026-09-09 18:41:47	2.175	15	21	composite	1.02	60
2026-09-09 18:38:43	1.432	9	7	prime	1.02	60
2026-09-09 18:38:41	1.395	57	61	prime	1.02	60
2026-09-09 18:38:40	8.6	69	61	prime	1.02	60
2026-09-09 18:38:30	5.06	33,9,67	63	composite	1.02	60
2026-09-09 18:38:23	44.309	17,11,55,5,29,59,69,39,25,65,61,73,85,93,7,31,49,53,95,101,21,9	67	prime	1.02	60
2026-09-09 18:37:38	3.602	27	57	composite	1.02	60
2026-09-09 18:21:18	60.065		7	time	1.02	60
2026-09-09 18:20:49	10.307	73,45,65,85	51	composite	1.02	60
2026-09-09 18:20:38	2.673	77	17	prime	1.02	60
2026-09-09 18:20:34	9.915	27,15,29,33	73	prime	1.02	60
2026-09-09 18:20:23	10.243	37,17,3,15,85,53,13	43	prime	1.02	60
2026-09-09 18:20:13	13.325	77,23,19,5,75,59,15,11,53,3	1	composite	1.02	60
2026-09-09 18:20:12	1.731		5	prime	1.02	60
2026-09-09 18:20:09	3.693	19	29	prime	1.02	60
2026-09-09 18:20:05	4.484	57	71	prime	1.02	60
2026-09-09 18:19:58	0.876		9	composite	1.02	60
2026-09-09 18:19:57	58.639	51,43,73,59,33,79,27,1,83,67,63,89,31,13,29,87,39,9,35,15,81,107,121,61,55	113	prime	1.02	60
2026-09-09 18:19:51	2.372	43	23	prime	1.02	60
2026-09-09 18:19:46	3.927	29,7,19	61	prime	1.02	60
2026-09-09 18:19:27	9.359	53,13,35,29,83,33,23,31,89	37	prime	1.02	60
2026-09-09 18:16:21	4.313	29,13	49	composite	1.02	60
2026-09-09 18:16:15	1.759		1	composite	1.02	60
2026-09-09 18:13:49	65.793		49	time	1.02	60
2026-09-09 18:12:40	4.928	69,39,53	59	prime	1.02	60
2026-09-09 18:12:34	2.549	55	63	composite	1.02	60
2026-09-09 18:09:25	16.698	59,65,23,53,27,7,51,47,75	77	composite	1.02	60
2026-09-09 18:09:08	0.835		69	composite	1.02	60
2026-09-09 18:09:07	0.353		25	composite	1.02	60
2026-09-09 18:09:06	0.723	59	57	composite	1.02	60
2026-09-09 18:09:05	0.707		31	prime	1.02	60
2026-09-09 18:09:03	5.772		49	composite	1.02	60
2026-09-09 18:08:57	31.599	41,63,5,79,85,11,25,67	1	composite	1.02	60
2026-09-09 18:08:25	0.229		3	prime	1.02	60
2026-09-09 18:08:24	1.625	27,9	61	prime	1.02	60
2026-09-09 18:08:24	0.249	21	3	prime	1.02	60

Time finished

Time taken

Sequence

Final number

Reason for ending

Difficulty

Max. number

Time allowed

2026-09-09 21:48:55

30.03

55,77,53,69,49,9,51,45,79,31,11,91

composite

1.02

2026-09-09 21:48:21

22.489

33,81,67,47,25,51,63

prime

1.02

2026-09-09 21:08:24

60.025

73,53,45,51,21,23,39,17,69,59,79,87,1,37,3,95,75,111,57,93,91,103,13,85,89,127,99,9,63,55,7,25,67,117,19,5,131,137,135,35,83,105,15,65,171,173,141,157,201,107,169,163

221

time

1.02

2026-09-09 21:07:23

6.653

73,67,81,23,49,19,51,47

prime

1.02

2026-09-09 21:07:16

10.903

11,51,69,81,59,31,27,87,39,71,37

prime

1.02

2026-09-09 21:07:05

21.368

33,39,45,51,15,81,19,25,11,21,43,65,85,77,31,23,73,71,55,41,57,99,49,83

117

composite

1.02

2026-09-09 21:06:42

18.748

73,75,23,79,25,7,81,19,47,9,59,29,63,17,71,35,87,61,31,37,103

prime

1.02

2026-09-09 20:44:45

50.516

45,31,71,29,27,77,39,89,35,85,17,13,9

prime

1.02

2026-09-09 20:43:41

56.97

63,29,57,39,55,77

composite

1.02

2026-09-09 19:36:06

7.698

23,37,33,11,21,81,51

prime

1.02

2026-09-09 19:35:56

3.158

prime

1.02

2026-09-09 19:21:21

14.46

41,55,37,19,1,23,11,21,63

composite

1.02

2026-09-09 19:21:05

1.744

prime

1.02

2026-09-09 19:20:52

3.307

39,67

prime

1.02

2026-09-09 19:20:45

6.928

17,11,81,29,23,13

prime

1.02

2026-09-09 19:19:51

19.098

55,3,75,13,59,61,29,33,53,27,11,1,45

prime

1.02

2026-09-09 19:19:31

5.449

77,25,59

composite

1.02

2026-09-09 19:19:22

2.763

composite

1.02

2026-09-09 19:04:08

4.605

55,65,19

prime

1.02

2026-09-09 19:03:58

1.289

composite

1.02

2026-09-09 19:03:52

3.071

prime

676742000000000

2026-09-09 19:03:47

4.813

prime

676742000000000

2026-09-09 19:03:38

5.615

prime

676742000000000

2026-09-09 19:03:29

1.676

composite

676742000000000

2026-09-09 19:03:23

13.365

prime

676742000000000

2026-09-09 19:02:59

21.442

35,25,23,85,29,73,55,59,49,3,17

prime

1.02

2026-09-09 19:02:50

15.989

3,1,25

composite

0.94

2026-09-09 19:02:33

2.181

composite

0.94

2026-09-09 19:02:30

0.439

composite

0.94

2026-09-09 19:02:29

0.469

prime

0.94

2026-09-09 19:02:28

3.455

composite

0.94

2026-09-09 19:02:23

7.356

39,25

composite

0.94

2026-09-09 19:02:15

1.566

prime

0.94

2026-09-09 19:02:13

6.046

59,63,5

composite

0.94

2026-09-09 19:02:05

2.091

prime

0.94

2026-09-09 19:02:02

3.84

35,65

composite

0.94

2026-09-09 19:01:57

3.174

prime

0.94

2026-09-09 19:01:18

8.35

61,19,81,77,83,55,23

composite

1.02

2026-09-09 18:58:43

18.032

43,75,81,77,65,53,1,3,7,39,67,99,89

prime

1.02

2026-09-09 18:58:21

9.729

69,1,49,53,19

prime

1.02

2026-09-09 18:58:10

4.687

29,73

prime

1.02

2026-09-09 18:55:46

4.793

53,31

prime

1.02

2026-09-09 18:52:57

60.744

time

0.94

2026-09-09 18:51:55

2.53

49,3

prime

0.94

2026-09-09 18:51:16

16.055

67,75,43,73,63,65,41,45,49,29

composite

1.02

2026-09-09 18:51:00

2.623

composite

1.02

2026-09-09 18:46:52

60.268

time

1.02

2026-09-09 18:45:48

2.275

composite

1.02

2026-09-09 18:45:45

1.899

composite

1.02

2026-09-09 18:45:40

6.497

55,73

composite

1.02

2026-09-09 18:45:33

23.773

prime

1.02

2026-09-09 18:45:01

10.678

13,81,29,9,31,43,79

prime

1.02

2026-09-09 18:44:50

1.39

composite

1.02

2026-09-09 18:44:46

5.061

11,17,51,41

prime

1.02

2026-09-09 18:44:35

4.713

7,41

composite

1.02

2026-09-09 18:44:07

1.391

prime

1.02

2026-09-09 18:43:48

60.1

19,11,81

time

1.02

2026-09-09 18:42:47

5.311

19,47,1

composite

1.02

2026-09-09 18:42:41

30.375

33,17

composite

1.02

2026-09-09 18:42:10

4.624

composite

1.02

2026-09-09 18:42:05

1.877

prime

1.02

2026-09-09 18:42:02

1.127

composite

1.02

2026-09-09 18:42:00

5.23

29,13,65

composite

1.02

2026-09-09 18:41:53

5.4

9,45,75

composite

1.02

2026-09-09 18:41:47

2.175

composite

1.02

2026-09-09 18:38:43

1.432

prime

1.02

2026-09-09 18:38:41

1.395

prime

1.02

2026-09-09 18:38:40

8.6

prime

1.02

2026-09-09 18:38:30

5.06

33,9,67

composite

1.02

2026-09-09 18:38:23

44.309

17,11,55,5,29,59,69,39,25,65,61,73,85,93,7,31,49,53,95,101,21,9

prime

1.02

2026-09-09 18:37:38

3.602

composite

1.02

2026-09-09 18:21:18

60.065

time

1.02

2026-09-09 18:20:49

10.307

73,45,65,85

composite

1.02

2026-09-09 18:20:38

2.673

prime

1.02

2026-09-09 18:20:34

9.915

27,15,29,33

prime

1.02

2026-09-09 18:20:23

10.243

37,17,3,15,85,53,13

prime

1.02

2026-09-09 18:20:13

13.325

77,23,19,5,75,59,15,11,53,3

composite

1.02

2026-09-09 18:20:12

1.731

prime

1.02

2026-09-09 18:20:09

3.693

prime

1.02

2026-09-09 18:20:05

4.484

prime

1.02

2026-09-09 18:19:58

0.876

composite

1.02

2026-09-09 18:19:57

58.639

51,43,73,59,33,79,27,1,83,67,63,89,31,13,29,87,39,9,35,15,81,107,121,61,55

113

prime

1.02

2026-09-09 18:19:51

2.372

prime

1.02

2026-09-09 18:19:46

3.927

29,7,19

prime

1.02

2026-09-09 18:19:27

9.359

53,13,35,29,83,33,23,31,89

prime

1.02

2026-09-09 18:16:21

4.313

29,13

composite

1.02

2026-09-09 18:16:15

1.759

composite

1.02

2026-09-09 18:13:49

65.793

time

1.02

2026-09-09 18:12:40

4.928

69,39,53

prime

1.02

2026-09-09 18:12:34

2.549

composite

1.02

2026-09-09 18:09:25

16.698

59,65,23,53,27,7,51,47,75

composite

1.02

2026-09-09 18:09:08

0.835

composite

1.02

2026-09-09 18:09:07

0.353

composite

1.02

2026-09-09 18:09:06

0.723

composite

1.02

2026-09-09 18:09:05

0.707

prime

1.02

2026-09-09 18:09:03

5.772

composite

1.02

2026-09-09 18:08:57

31.599

41,63,5,79,85,11,25,67

composite

1.02

2026-09-09 18:08:25

0.229

prime

1.02

2026-09-09 18:08:24

1.625

27,9

prime

1.02

2026-09-09 18:08:24

0.249

prime

1.02

Stats for the "Is this prime?" game

All-time stats

100 most recent attempts