Published on: 2025-04-25 18:43:47
Up to this point, we’ve been talking about Turing machines — specifically, the longest-known 5- and 6-state machines that eventually halt. We ran the 5-state champion to completion and built visualizations to explore its behavior. But the discovery that it’s the longest halting machine with 5 states — and the identification of the 6-state contender — came from extensive research and formal proofs, not from running them step-by-step. That said, I’ve built a Rust-based visualizer that can emulate
Keywords: add_acc biguint let multiply_acc mut
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