Kolakoski Constant in all languages in chars. Achievements Cheevos Holes Languages Medals Miscellaneous All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 451st MeWhenI 🇻🇦 510 588 30ms 6 Jun 2023 452nd Yewzir 🇧🇪 508 223 5ms 18 Feb 2024 453rd dokutan 507 242 206ms 1 Jul 2025 454th RaBa21 🇭🇺 506 115 20ms 1 Aug 2025 455th CatsAreFluffy 504 116 432ms 15 Jan 2024 455th JunkIce 504 116 365ms 7 Mar 2025 457th petroselo 501 116 10ms 16 Nov 2021 457th amollberg 🇸🇪 501 116 23ms 30 Jan 2022 457th CatsAreFluffy 501 116 15ms 10 Jan 2023 457th JunkIce 501 116 19ms 7 Mar 2025 457th robin-scragg 501 116 72ms 21 Oct 2025 462nd dokutan 501 226 5ms 11 Jan 2024 463rd tomh1012 500 227 444ms 18 Sep 2025 464th cros107 🇦🇺 493 118 47ms 16 Sep 2025 465th CaedenHarper 🇨🇦 491 128 823ms 9 Sep 2025 466th m-tkach 🇺🇦 486 222 2ms 17 Dec 2022 466th Yewzir 🇧🇪 486 222 2ms 22 Dec 2023 468th knutae 🇳🇴 485 120 11ms 29 Jun 2021 469th two-bad 🇬🇧 485 141 818ms 25 Feb 2024 470th Waffle3z 484 101 64ms 17 Jan 2021 471st Yewzir 🇧🇪 482 362 2,344ms 14 Nov 2025 472nd yzhs 🇩🇪 481 180 139ms 24 Jul 2021 473rd frosster 480 250 1ms 13 Mar 2025 474th guilhem-roy 🇫🇷 477 122 11ms 28 Feb 2022 474th inverseLorentz 🇦🇺 477 122 108ms 24 Oct 2023 476th alemelis 473 125 2,181ms 14 Aug 2024 477th dokutan 471 229 1ms 1 May 2024 478th neihousaigaai 470 275 565ms 5 Jan 2022 479th Yewzir 🇧🇪 469 242 353ms 11 Feb 2024 480th jared-hughes 466 233 1,944ms 17 Jul 2022 481st LukasFolwarczny 🇨🇿 462 126 12ms 16 Sep 2022 482nd osmith93 458 127 61ms 10 Jul 2022 483rd Shanethegamer 🇺🇸 457 248 361ms 12 Dec 2021 484th eranws 456 150 44ms 2 Nov 2022 485th janbehrens 🇩🇪 455 150 425ms 3 Dec 2023 486th dokutan 455 249 402ms 21 Aug 2024 487th adamnielson42 🇺🇸 453 93 21ms 20 Nov 2023 488th LucaArgentiUCF 🇮🇹 448 294 106ms 28 Jan 2021 489th yokasuretsu 447 130 31ms 13 Jan 2025 489th WillowWispy 447 130 13ms 16 Mar 2025 491st NickTheEASDude 🇺🇸 444 131 188ms 20 Aug 2024 492nd h3ra993huskp 🇯🇵 444 291 641ms 16 days ago 493rd FortuiteMan 🇫🇷 441 132 2,265ms 21 Jul 2025 494th MeWhenI 🇻🇦 440 399 25ms 10 Jul 2021 495th dokutan 438 231 1,242ms 23 Aug 2024 496th Shanethegamer 🇺🇸 437 113 271ms 4 Dec 2022 497th jacekwladzinski 437 133 11ms 9 Oct 2025 498th dokutan 437 219 2,786ms 23 Oct 2024 499th hiddicop 🇸🇪 436 112 65ms 29 Jan 2021 500th jacobly0 🇺🇸 436 275 1ms 21 Sep 2023 501st madex 🇩🇪 432 250 36ms 27 Oct 2024 502nd glesnick 431 135 170ms 18 Aug 2022 503rd boxjelly 430 201 145ms 26 Jan 2021 504th MeWhenI 🇻🇦 428 223 40ms 3 Sep 2024 505th Pyroan 422 138 98ms 14 May 2025 505th InigoK 🇺🇸 422 138 31ms 25 Aug 2025 507th dokutan 422 226 41ms 24 Aug 2024 508th michelebastione 🇮🇹 418 139 70ms 10 Apr 2021 508th cubed-guy 418 139 24ms 2 Nov 2022 510th dokutan 417 218 6ms 5 May 2024 511th MeWhenI 🇻🇦 416 209 80ms 13 Dec 2022 512th SniperSmiley 🇺🇸 415 140 95ms 30 Jun 2022 512th StefanHabel 🇨🇦 415 140 65ms 21 Apr 2024 514th RYNO8 410 142 14ms 4 Sep 2021 515th Yewzir 🇧🇪 410 203 69ms 9 Mar 2024 516th MeWhenI 🇻🇦 408 724 9ms 28 Nov 2023 517th albanian-laundromat 404 333 936ms 8 Sep 2025 518th Yewzir 🇧🇪 403 207 71ms 7 Jul 2023 519th m-tkach 🇺🇦 401 145 113ms 19 Sep 2021 520th dokutan 400 425 41ms 15 days ago 521st neihousaigaai 398 146 19ms 8 Apr 2021 521st AGoyet 398 146 25ms 29 Jun 2022 523rd Yewzir 🇧🇪 397 210 996ms 18 Feb 2024 524th RDShah 396 147 181ms 19 Jan 2021 525th dokutan 392 445 1,653ms 21 Oct 2025 First Prev 451–525 of 1,681 Next Last