ORorangecat·Oct 13, 2026
335 according to https://github.com/jeff87654/busy-beaver/blob/main/ZF/README...
In BB(10) > Graham's Numberjeff87654
busy-beaver
Rocq Prover2026–2026
jeff87654 / busy-beaver
busy-beaver
Busy beaver machines with axiom-free Coq proofs: BB(7) σ > 3↑²⁰3, BB(8) > f_ω³(12), BB(9) > f_ω⁷(12), BB(10) f_(ω+1), BB(12) f_(ω+1)², BB(13)/BB(14) f_(ω+2), BB(4,3). Plus Turing machines that halt iff ZF/ZFC (253 states), ZFC + universes (296) or PA (238) is inconsistent, and one (449) that halts iff PA proves Goldbach's conjecture.
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2Mentions
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15GitHub stars
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What it is
Busy beaver machines with axiom-free Coq proofs: BB(7) σ > 3↑²⁰3, BB(8) > f_ω³(12), BB(9) > f_ω⁷(12), BB(10) f_(ω+1), BB(12) f_(ω+1)², BB(13)/BB(14) f_(ω+2), BB(4,3). Plus Turing machines that halt iff ZF/ZFC (253 states), ZFC + universes (296) or PA (238) is inconsistent, and one (449) that halts iff PA proves Goldbach's conjecture.
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Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 5:04:57 PM UTC.
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Observed mentions: 2026-10-13 12:40:04 UTC to 2026-10-13 15:41:25 UTC.
Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.
View mention counts and date ranges
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| Oct 13, 12:00 | 2026-10-13 12:00:00 UTC | 2026-10-13 13:00:00 UTC | 1 | 1 | 0 |
| Oct 13, 13:00 | 2026-10-13 13:00:00 UTC | 2026-10-13 14:00:00 UTC | 0 | 0 | 0 |
| Oct 13, 14:00 | 2026-10-13 14:00:00 UTC | 2026-10-13 15:00:00 UTC | 0 | 0 | 0 |
| Oct 13, 15:00 | 2026-10-13 15:00:00 UTC | 2026-10-13 16:00:00 UTC | 1 | 0 | 1 |