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 NFA Simulator 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 NFA Simulator 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 449th snoozingnewt 🇺🇸 504 116 380ms 28 Sep 2025 452nd petroselo 501 116 11ms 16 Nov 2021 452nd amollberg 🇸🇪 501 116 21ms 30 Jan 2022 452nd CatsAreFluffy 501 116 16ms 10 Jan 2023 452nd JunkIce 501 116 18ms 7 Mar 2025 452nd snoozingnewt 🇺🇸 501 116 18ms 31 Mar 2025 452nd robin-scragg 501 116 89ms 21 Oct 2025 458th dokutan 501 226 7ms 11 Jan 2024 459th tomh1012 500 227 405ms 18 Sep 2025 460th cros107 🇦🇺 493 118 48ms 16 Sep 2025 461st CaedenHarper 🇨🇦 491 128 822ms 9 Sep 2025 462nd m-tkach 🇺🇦 486 222 2ms 17 Dec 2022 462nd Yewzir 🇧🇪 486 222 2ms 22 Dec 2023 464th knutae 🇳🇴 485 120 10ms 29 Jun 2021 465th two-bad 🇬🇧 485 141 916ms 25 Feb 2024 466th Waffle3z 484 101 64ms 17 Jan 2021 467th Yewzir 🇧🇪 482 362 1,659ms 19 days ago 468th yzhs 🇩🇪 481 180 159ms 24 Jul 2021 469th frosster 480 250 2ms 13 Mar 2025 470th guilhem-roy 🇫🇷 477 122 12ms 28 Feb 2022 470th inverseLorentz 🇦🇺 477 122 108ms 24 Oct 2023 472nd alemelis 473 125 2,181ms 14 Aug 2024 473rd dokutan 471 229 2ms 1 May 2024 474th neihousaigaai 470 275 428ms 5 Jan 2022 475th Yewzir 🇧🇪 469 242 350ms 11 Feb 2024 476th jared-hughes 466 233 1,972ms 17 Jul 2022 477th LukasFolwarczny 🇨🇿 462 126 13ms 16 Sep 2022 478th osmith93 458 127 64ms 10 Jul 2022 479th Shanethegamer 🇺🇸 457 248 351ms 12 Dec 2021 480th eranws 456 150 44ms 2 Nov 2022 481st janbehrens 🇩🇪 455 150 388ms 3 Dec 2023 482nd dokutan 455 249 335ms 21 Aug 2024 483rd adamnielson42 🇺🇸 453 93 22ms 20 Nov 2023 484th LucaArgentiUCF 🇮🇹 448 294 115ms 28 Jan 2021 485th yokasuretsu 447 130 30ms 13 Jan 2025 485th WillowWispy 447 130 13ms 16 Mar 2025 487th NickTheEASDude 🇺🇸 444 131 193ms 20 Aug 2024 488th h3ra993huskp 🇯🇵 444 291 525ms 3 days ago 489th FortuiteMan 🇫🇷 441 132 2,291ms 21 Jul 2025 490th MeWhenI 🇻🇦 440 399 30ms 10 Jul 2021 491st dokutan 438 231 1,267ms 23 Aug 2024 492nd Shanethegamer 🇺🇸 437 113 216ms 4 Dec 2022 493rd jacekwladzinski 437 133 11ms 9 Oct 2025 494th dokutan 437 219 2,782ms 23 Oct 2024 495th hiddicop 🇸🇪 436 112 77ms 29 Jan 2021 496th jacobly0 🇺🇸 436 275 2ms 21 Sep 2023 497th glesnick 431 135 152ms 18 Aug 2022 498th madex 🇩🇪 431 250 43ms 27 Oct 2024 499th boxjelly 430 201 147ms 26 Jan 2021 500th MeWhenI 🇻🇦 428 223 43ms 3 Sep 2024 501st dokutan 422 226 40ms 24 Aug 2024 502nd Pyroan 421 138 96ms 14 May 2025 502nd InigoK 🇺🇸 421 138 32ms 25 Aug 2025 504th michelebastione 🇮🇹 418 139 70ms 10 Apr 2021 504th cubed-guy 418 139 23ms 2 Nov 2022 506th dokutan 417 218 6ms 5 May 2024 507th MeWhenI 🇻🇦 416 209 72ms 13 Dec 2022 508th SniperSmiley 🇺🇸 415 140 93ms 30 Jun 2022 508th StefanHabel 🇨🇦 415 140 66ms 21 Apr 2024 510th RYNO8 410 142 17ms 4 Sep 2021 511th Yewzir 🇧🇪 410 203 70ms 9 Mar 2024 512th MeWhenI 🇻🇦 408 724 9ms 28 Nov 2023 513th albanian-laundromat 404 333 986ms 8 Sep 2025 514th Yewzir 🇧🇪 403 207 72ms 7 Jul 2023 515th m-tkach 🇺🇦 401 145 113ms 19 Sep 2021 516th dokutan 400 425 33ms 2 days ago 517th neihousaigaai 398 146 20ms 8 Apr 2021 517th AGoyet 398 146 25ms 29 Jun 2022 519th Yewzir 🇧🇪 397 210 996ms 18 Feb 2024 520th RDShah 396 147 182ms 19 Jan 2021 521st dokutan 392 445 1,523ms 21 Oct 2025 522nd MeWhenI 🇻🇦 389 202 22ms 15 Nov 2021 523rd cure-honey 🇯🇵 389 338 136ms 23 Mar 2021 524th dokutan 389 703 11ms 28 Jun 2025 525th Schmitt-Very-Cool 387 334 773ms 1 Oct 2025 First Prev 451–525 of 1,674 Next Last