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19 October 2025

  • 14:1214:12, 19 October 2025 1RB2LB0LB 2LC2LA0LA 2RD1LC1RZ 1RA2LD1RD (hist | edit) [4,159 bytes] Polygon (talk | contribs) (Created page with "{{machine|1RB2LB0LB_2LC2LA0LA_2RD1LC1RZ_1RA2LD1RD}} {{TM|1RB2LB0LB_2LC2LA0LA_2RD1LC1RZ_1RA2LD1RD|halt}} is a pentational halting BB(4,3) TM. It was discovered in May 2024 by Pavel Kropitz as one of seven long running TMs and achieves a score of over <math>3 \uparrow\uparrow\uparrow 88574</math>. Polygon analysed the TM by hand in October 2025, providing its score. Pavel listed the halting tape as: <pre> 1 Z> 1^(162*3^((3*<(243*3^(6) - 5)/2; (<(54*3^((3b + 11)/2) - 2...")

12 October 2025

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9 September 2025

  • 05:4705:47, 9 September 2025 1RB0RE 1LC0RA 1LA1LD 1LC1LF 0LC0LB 1LE--- (hist | edit) [55 bytes] Int-y1 (talk | contribs) (Created page with "{{machine|1RB0RE_1LC0RA_1LA1LD_1LC1LF_0LC0LB_1LE---}}{{unsolved|Does this TM halt? If so, how many steps does it take to halt?}} {{TM|1RB0RE_1LC0RA_1LA1LD_1LC1LF_0LC0LB_1LE---}} is a BB(6) holdout TM analyzed by @-d on August 2025. @-d believes that this TM is probviously halting because it chooses 3 steps seemingly at random, and there is a path of 108 steps that cause the TM will halt. == Analysis by @-d == Message sent on Aug 13 2025: [https://discord.com/chann...")

2 September 2025

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