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 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 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 375th luuumine 🇫🇷 588 99 41ms 9 Oct 2025 377th SirFireball3521 587 84 140ms 1 Mar 2023 378th stefangimmillaro 587 224 118ms 18 Sep 2023 379th MeWhenI 🇻🇦 587 264 161ms 16 Mar 2022 380th MeWhenI 🇻🇦 586 134 12ms 2 Oct 2022 381st GeorgeStechman 🇬🇧 584 117 15ms 17 Nov 2022 382nd argusdusty 🇺🇸 582 100 11ms 25 Mar 2021 382nd nstearns96 🇬🇧 582 100 310ms 21 Jan 2023 382nd adamnielson42 🇺🇸 582 100 80ms 8 Nov 2023 385th Shanethegamer 🇺🇸 582 143 1,058ms 8 Apr 2021 386th MeWhenI 🇻🇦 580 196 4ms 12 Aug 2024 387th kmathis22 580 223 561ms 21 hours ago 388th KatieLG 🇬🇧 579 118 18ms 5 Oct 2025 389th Shanethegamer 🇺🇸 575 85 104ms 8 Apr 2021 390th MeWhenI 🇻🇦 573 102 482ms 24 May 2024 391st dokutan 572 199 4ms 12 Aug 2024 392nd BREMAUCY 🇫🇷 570 102 10ms 19 Jul 2025 393rd AlephSquirrel 566 53 89ms 3 Jan 2023 394th RockOfStone 563 213 2,121ms 4 Nov 2021 395th Yewzir 🇧🇪 562 234 54ms 22 Dec 2023 396th stefangimmillaro 560 171 3,281ms 19 Nov 2024 397th Natanaelel 🇸🇪 556 88 64ms 10 Sep 2021 398th dokutan 556 217 105ms 28 Mar 2024 399th jatloe 554 105 59ms 26 Sep 2024 400th MeWhenI 🇻🇦 553 238 268ms 10 Feb 2023 401st Shanethegamer 🇺🇸 548 158 408ms 20 May 2022 402nd dokutan 548 236 351ms 24 Sep 2025 403rd m-tkach 🇺🇦 548 240 50ms 17 Dec 2022 404th dokutan 546 107 451ms 21 Mar 2025 405th AkashTandon167 544 107 11ms 1 Nov 2021 405th dokutan 544 107 38ms 21 Mar 2025 405th blaztoma 🇱🇹 544 107 36ms 13 Oct 2025 408th olivermrose 🇺🇸 543 90 109ms 28 Oct 2021 408th BrenSchaap 543 90 74ms 13 Nov 2021 410th dokutan 541 243 373ms 19 Aug 2024 410th CaedenHarper 🇨🇦 541 243 281ms 19 days ago 412th MeWhenI 🇻🇦 540 78 41ms 28 Feb 2025 413th dokutan 540 222 1ms 3 Apr 2024 414th nullie 539 108 118ms 9 Jun 2022 415th edsrzf 🇳🇿 539 177 117ms 20 Dec 2024 416th CaedenHarper 🇨🇦 539 240 370ms 16 Oct 2025 417th snoozingnewt 🇨🇦 537 110 388ms 14 Oct 2025 418th Yewzir 🇧🇪 537 245 266ms 3 Jan 2024 419th dokutan 535 427 4ms 8 Dec 2023 420th marcin7Cd 534 109 12ms 9 Feb 2021 420th OllieBoyne 🇬🇧 534 109 162ms 25 May 2022 420th scpchicken 🇵🇼 534 109 11ms 28 Feb 2023 420th CutSandstone 534 109 33ms 8 Jul 2024 424th msbranicky 532 247 301ms 3 Oct 2023 424th stefangimmillaro 532 247 416ms 13 Dec 2024 426th dokutan 532 371 455ms 13 Jan 2025 427th scpchicken 🇵🇼 531 93 1,034ms 17 Feb 2023 428th pschmid0 🇺🇸 531 182 189ms 9 Oct 2022 429th jerrandolph 530 248 771ms 26 Sep 2025 430th qpwoeirut 529 110 289ms 11 Aug 2025 430th Lv0Sys 🇵🇱 529 110 10ms 2 days ago 432nd Yewzir 🇧🇪 529 228 105ms 6 Jul 2023 433rd SirBogman 🇺🇸 526 205 15ms 2 Jan 2022 434th dokutan 526 250 254ms 6 Jan 2024 435th m-tkach 🇺🇦 526 570 27ms 20 Jan 2024 436th CedricGebistorf 524 111 10ms 9 Mar 2022 437th coreynash 522 131 30ms 24 Oct 2023 438th lynn 522 574 33ms 6 Aug 2023 439th Lv0Sys 🇵🇱 520 94 46ms 2 days ago 440th Shanethegamer 🇺🇸 519 249 477ms 25 Sep 2025 441st MeWhenI 🇻🇦 518 114 335ms 15 Feb 2023 442nd CaedenHarper 🇨🇦 518 219 362ms 26 Oct 2025 443rd namelessiw 517 113 486ms 5 Mar 2024 444th rschwa6308 🇺🇸 515 113 12ms 28 Jun 2021 444th namelessiw 515 113 11ms 11 Jan 2024 446th commandblockguy 🇺🇸 513 114 528ms 15 Jan 2024 447th johndevou 513 210 36ms 18 Nov 2021 448th MeWhenI 🇻🇦 513 239 200ms 3 Dec 2021 449th lifthrasiir 🇰🇷 511 578 8ms 19 Dec 2024 450th MeWhenI 🇻🇦 510 588 31ms 6 Jun 2023 First Prev 376–450 of 1,679 Next Last