W-0034

A superpermutation on 11 symbols, found by Jay Pantone jaypantone. It beat the previous record, W-0025, by 9 letters, and was the record for n = 11 from Oct 1 until Oct 2, 2026, when W-0039 was 2 letters shorter.

Length: 43,930,680
Repeated occurrences: 18,816
Announced: Oct 1, 2026

Begins

0123456789A01234567890A12345678901A23456789012A34567890123A45678901234A56789012345A67890123456A78901234567A89012345678A9…

Windows

	43,930,670	windows of 11 consecutive letters
=	39,916,800	distinct permutations, all 11! of them
+	18,816	repeated occurrences of a permutation
+	3,995,054	windows that are not permutations

How it was found

Local improvement by AI agents of the September 29 word.

Checking

Total check time: 2 s, including preparation but not time in the queue.

Program	Source	Result	Time
classcheck	41928cce	all 39,916,800 permutations appear, by rotation class	under 1 s
bitmapcheck	288b3f67	agrees, by Lehmer rank	1 s
wordhash	94925fe4	the SHA-256 of the word and of its mirror	under 1 s

SHA-256ba23e81996c79159fb5ee9461e2aa600251903aae120ce786437139ddf40ca11 Compilerrustc 1.89.0 (29483883e 2025-08-04)

Download

Download Detour (.detour) 7.4 kB, or 43.9 MB decoded

Decode to text

# check it yourself
detour decode W-0034.detour - | tr -d '\n' | shasum -a 256
tar xzf checkers-rs-source.tar.gz && cd checkers-rs && cargo build --release --locked
./target/release/classcheck 11 ../W-0034.detour 43930680
./target/release/bitmapcheck 11 ../W-0034.detour 43930680
./target/release/wordhash 11 ../W-0034.detour 43930680

Decoding needs detour; see the Detour format for how to build and install it. The checkers are in checkers-rs-source.tar.gz, which needs Rust 1.89 or later; each one decodes the file itself, so the word is never written out.

The file's header gives n = 11 and sync exponent 0. The file has 488,419 tokens: 1 START, 1 literal of 1 byte in all, and 488,417 deviations. Deviations by weight, from 1 to 11: 18,816 · 131,712 · 337,802 · 3 · 9 · 17 · 7 · 39 · 8 · 3 · 1.