Stats for the "Is this prime?" game

This page is updated at most once per minute. It was last updated at .

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

8174043 attempts

Reason for ending Frequency
composite484861459%
prime306060937%
time2633893%
Final number Reason for ending Frequency
87composite94368811.54%
51composite3863924.73%
57composite3831194.69%
39composite2527213.09%
1composite2503043.06%
63composite2041152.5%
49composite2005212.45%
69composite1878002.3%
5prime1870122.29%
27composite1758252.15%
9composite1757782.15%
59prime1709052.09%
79prime1629661.99%
67prime1561171.91%
29prime1531601.87%
47prime1493781.83%
21composite1473071.8%
61prime1461341.79%
53prime1446791.77%
77composite1434361.75%

100 most recent attempts

Time finished Time taken Sequence Final number Reason for ending Difficulty Max. number Time allowed
2026-02-09 01:02:165.6911,75,2161prime1.02060
2026-02-09 01:02:100.4096541prime1.02060
2026-02-09 01:02:091.8429,33,6713prime1.02060
2026-02-09 01:02:080.22767prime1.02060
2026-02-09 00:53:391.95929prime1.02060
2026-02-09 00:53:3430.40427,69,35,33,59,65,3,17,45,49,63,53,77,29,19,67,11,43,23,15,7,95,97,47,71,121,5179prime1.02060
2026-02-09 00:53:0217.69939,69,47,19,43,33,31,75,51,41,81,77,101,79,59,35,6391composite1.02060
2026-02-08 23:53:157.79813,9,23,783prime1.02060
2026-02-08 23:53:062.8567,579composite1.02060
2026-02-08 23:53:023557composite1.02060
2026-02-08 23:52:5810.9959,47,41,37,1767prime1.02060
2026-02-08 23:52:456.2033,19,65,731prime1.02060
2026-02-08 23:52:372.5942951composite1.02060
2026-02-08 23:52:3024.48577,41,47,29,85,61,75,31,65,33,9,871composite1.02060
2026-02-08 23:26:0637.5481,71,5,31,19,75,41,45,27,67,29,7,33,9,35,63,57,3,69,37,3,25,27,11,55,73,61,9,47,35,23,5,31,59,7,57,33,71,45,17,115,111,4315composite1060
2026-02-08 23:25:270.67359prime1060
2026-02-08 23:25:261.343799composite1060
2026-02-08 23:25:240.6645composite1060
2026-02-08 23:25:236.91823,33,31,17,13,77,29,5349composite1060
2026-02-08 23:25:162.58345,35,6715composite1060
2026-02-08 23:25:123.05733,65,49,713prime1060
2026-02-08 23:25:091.2893551composite1060
2026-02-08 23:25:070.6459prime1060
2026-02-08 23:25:0612.05265,17,13,77,29,69,3,63,21,23,57,1,19,67,537prime1060
2026-02-08 23:24:445.30815,55,21,47,771composite1060
2026-02-08 23:24:381.344277prime1060
2026-02-08 23:24:363.40463,21,43,113prime1060
2026-02-08 23:24:320.7023prime1060
2026-02-08 23:24:311.4214177composite1060
2026-02-08 23:24:291.91317,6371prime1060
2026-02-08 23:24:272.78221,79,3537prime1060
2026-02-08 23:24:232.72643,11,155prime1060
2026-02-08 23:24:202.67161,33,659composite1060
2026-02-08 23:24:177.18743,33,77,11,69,41,5,57,2717prime1060
2026-02-08 23:24:092.43855,49,3363composite1060
2026-02-08 23:24:063.32649,39,31,579prime1060
2026-02-08 23:24:021.4045735composite1060
2026-02-08 23:24:002.07629,1537prime1060
2026-02-08 23:23:580.68645composite1060
2026-02-08 23:23:5524.81531,51,13,45,59,67,29,7,61,15,41,19,75,77,39,49,71,73,69,37,37,43,51,3,5,73,67,21,69,65,79,1355composite1060
2026-02-08 23:23:305.26955,17,25,31,49,75,953prime1060
2026-02-08 23:23:241.88575,5977composite1060
2026-02-08 23:23:220.85321composite1060
2026-02-08 23:23:201.90129,3177composite1060
2026-02-08 23:23:182.66567,47,2363composite1060
2026-02-08 23:23:1423.44565,3,9,41,75,67,79,29,69,47,7,63,61,59,55,1,13,37,31,53,69,19,61,21,23,35,73,57,3745composite1060
2026-02-08 23:22:5010.73965,47,71,23,29,69,41,79,31,13,77,3,33,2753prime1060
2026-02-08 23:22:3825.6237,59,57,23,39,49,13,51,77,45,3,53,73,55,63,69,11,21,35,43,19,51,21,75,23,39,57,53,47,61,5559prime1060
2026-02-08 23:22:135.85769,65,49,7,25,19,4761prime1060
2026-02-08 23:22:0522.37443,47,35,61,1,37,21,23,55,49,51,69,53,11,65,39,79,7,75,59,57,21,63,39,35,11,2729prime1060
2026-02-08 23:21:422.83777,67,31,375composite1060
2026-02-08 23:21:392.39953,4767prime1060
2026-02-08 23:21:364.16619,27,47,31,111composite1060
2026-02-08 23:21:310.6479composite1060
2026-02-08 23:21:301.1244547prime1060
2026-02-08 23:21:296.2239,79,49,25,71,65,75,2761prime1060
2026-02-08 23:21:224.10317,11,69,63,5961prime1060
2026-02-08 23:21:1715.63225,63,37,59,41,21,45,27,11,69,5,31,67,9,33,15,77,75,65,3957composite1060
2026-02-08 23:20:4949.87273,7,49,59,17,57,53,15,5,45,21,71,31,11,27,75,39,67,25,13,75,41,21,13,63,35,37,25,9,53,61,31,79,23,43,69,1,65,7,71,81,59,5,97,47,33,109,73,115,3,93,15,113,119,85,89,29,103,27,11129composite1060
2026-02-08 23:19:561.448763composite1060
2026-02-08 23:19:530.6171composite1060
2026-02-08 23:19:527.29563,31,43,25,57,51,47,5,1523prime1060
2026-02-08 23:19:4560.157,11,31,71,7,43,21,19,51,77,69,61,79,27,75,41,49,73,37,9,75,79,63,27,33,49,57,29,17,77,37,35,67,19,71,7,59,39,53,13,109,69,107,113,103,31,41,1,23,87,83,93,5,55,21,25,111,61,47,45,89,149,10115time1060
2026-02-08 23:18:447.41777,27,5,3,59,15,33,9,3569composite1060
2026-02-08 23:18:361.3875115composite1060
2026-02-08 23:18:345.24533,5,77,31,5753prime1060
2026-02-08 23:18:2714.10371,17,19,45,63,21,11,3,37,25,55,31,49,79,67,73,75,65,3953prime1060
2026-02-08 23:18:126.3421,23,21,29,67,71,55,6353prime1060
2026-02-08 23:18:011.07357composite1060
2026-02-08 23:17:5445.45935,49,61,3,67,77,37,57,55,75,15,39,9,33,1,41,79,47,59,53,41,35,75,33,45,61,3,43,79,7,13,21,9,11,67,31,15,47,63,39,55,95,83,85,65,23,5,117,19,107,1,119,49,9187composite1060
2026-02-08 23:17:0625.12465,9,25,33,5,37,39,23,77,49,69,19,3,21,63,67,27,51,53,29,5,3,15,61,13,55,53,71,77,4337prime1060
2026-02-08 23:16:411.14259prime1060
2026-02-08 23:16:399.47363,13,17,45,43,71,29,39,47,41,31,5725composite1060
2026-02-08 23:16:292.68375,71,6929prime1060
2026-02-08 23:16:263.77737,25,45,7551composite1060
2026-02-08 23:16:213.02913,77,435prime1060
2026-02-08 23:16:183.78563,59,49,7917prime1060
2026-02-08 23:16:133.49863,21,11,151composite1060
2026-02-08 23:16:090.77423prime1060
2026-02-08 23:16:088.66713,77,33,15,75,19,63,73,43,71,5967prime1060
2026-02-08 23:15:590.71531prime1060
2026-02-08 23:15:5413.3357,13,15,61,57,41,17,25,51,73,9,33,47,65,29,2775composite1060
2026-02-08 23:15:400.66367prime1060
2026-02-08 23:15:391.5036167prime1060
2026-02-08 23:15:374.04969,43,19,45,4715composite1060
2026-02-08 23:15:322.74145,55,927composite1060
2026-02-08 23:15:295.7569,79,73,53,21,35,1943prime1060
2026-02-08 23:15:234.11327,55,13,49,6967prime1060
2026-02-08 23:15:180.70723prime1060
2026-02-08 23:15:170.64633composite1060
2026-02-08 23:15:1610.5615,27,77,67,79,39,17,29,65,15,61,33,35,2313prime1060
2026-02-08 23:15:046.89169,75,13,71,57,19,1,39,6359prime1060
2026-02-08 23:14:5447.99915,75,19,59,37,47,77,17,43,73,65,25,55,13,29,79,67,33,11,53,43,39,5,41,77,13,7,17,67,9,75,49,19,27,47,59,1,3,63,25,53,81,107,99,11,69,29,65,37,83,61,87,109,5591composite1060
2026-02-08 23:14:0525.47365,67,13,59,71,79,73,29,35,7,37,11,23,69,77,47,41,33,49,75,29,35,1,43,17,31,19,47,63,33,21,3961prime1060
2026-02-08 23:13:3652.79765,37,35,41,63,73,51,33,59,1,25,3,11,39,67,13,5,21,71,9,25,23,55,5,75,29,15,21,35,69,63,27,49,45,59,7,71,19,37,41,101,1,119,65,109,39,33,99,87,111,61,9,105,47,103,83,81,107,31,51,147143composite1060
2026-02-08 23:12:436.77345,67,51,71,43,47,19,153prime1060
2026-02-08 23:12:3257.08479,35,69,7,13,57,3,21,17,49,55,37,77,5,23,45,9,43,75,33,27,35,25,45,55,15,69,49,51,1,3,41,17,23,7,59,43,73,11,53,91,109,107,63,103,39,75,87,65,93,119,113,33,81,61,95,57,47,5,101,21,123,131,67157prime1060
2026-02-08 23:11:350.75937prime1060
2026-02-08 23:11:333.7413,51,29,137prime1060
2026-02-08 23:11:295.21247,53,37,79,973prime1060