Collatz in all languages in bytes. Cheevos Holes Recent Holes Langs Medals Misc 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 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 Transpose Sentence United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir 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 Erlang 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 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 Erlang 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 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 Transpose Sentence United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Bytes Time 431st ljweel 913 73 13 Feb 2023 431st jmerle 🇳🇱 913 73 16 Feb 2023 431st TaserTheFox 🇺🇸 913 73 14 Mar 2023 431st pinguicula 913 73 6 Apr 2023 431st TheoKeller1 913 73 11 Jun 2023 431st fkantelberg 913 73 16 Jul 2023 431st Mikey-Beep 🇬🇧 913 73 31 Aug 2023 431st eiburns 913 73 9 Oct 2023 431st htareque 913 73 13 Oct 2023 431st wearsunscreen 913 73 18 Oct 2023 431st bzijlema 🇳🇱 913 73 25 Oct 2023 431st Grrisly 913 73 10 Nov 2023 431st m42km 913 73 11 Nov 2023 431st GeneralPoxter 913 73 7 Dec 2023 431st logvp 913 73 12 Jan 2024 431st JoaoFelipe3 913 73 13 Jan 2024 431st ehulinsky 🇺🇸 913 73 16 Feb 2024 431st Lewenhaupt 913 73 23 Feb 2024 431st Yewzir 🇧🇪 913 73 5 Apr 2024 431st stertooy 🇧🇪 913 73 9 Jun 2024 431st cuboids 913 73 11 Jul 2024 431st jipsong 🇩🇪 913 73 23 Jul 2024 431st mattyhempstead 913 73 6 Oct 2024 431st wh3n3v3r 🇨🇿 913 73 18 Nov 2024 431st klixel 🇨🇦 913 73 18 Nov 2024 431st tjwrenn 913 73 10 Dec 2024 431st nullie 913 73 19 Dec 2024 431st ryyyn 🇺🇸 913 73 7 Jan 2025 431st maxgodfrey2004 🇨🇦 913 73 13 Feb 2025 431st lolgeny 913 73 22 Feb 2025 431st andrewjc2000 913 73 23 Feb 2025 431st Languag3 913 73 27 Feb 2025 431st Bulmenisaurus 913 73 2 Mar 2025 431st souta-1326 913 73 1 Apr 2025 431st BenjaminHGong 913 73 26 May 2025 431st FEZfan 🇦🇺 913 73 11 Jul 2025 431st wuduculfre 913 73 28 Jul 2025 431st BREMAUCY 🇫🇷 913 73 24 Aug 2025 489th ovs-code 🇩🇪 913 75 12 Sep 2024 489th Kacarott 🇦🇺 913 75 13 Sep 2024 491st Lydxn 🇨🇦 913 81 1 Apr 2023 492nd andersk 🇺🇸 913 91 25 Oct 2022 492nd Super-Pizza 🇨🇦 913 91 4 Dec 2022 492nd klixel 🇨🇦 913 91 20 May 2023 492nd lynn 913 91 6 Jul 2024 492nd edsrzf 🇳🇿 913 91 29 Nov 2024 492nd DialFrost 🇸🇬 913 91 7 Apr 2025 498th lynn 912 78 5 May 2022 499th nai62 911 69 27 Aug 2022 500th GrayJoKing 🇦🇺 911 71 10 Aug 2023 501st tailorspy 911 93 27 May 2024 501st sean-niemann 🇺🇸 911 93 9 Jun 2025 503rd GolfingSuccess 🇬🇷 910 64 14 Dec 2024 503rd MeWhenI 🇻🇦 910 64 24 Dec 2024 505th MeWhenI 🇻🇦 909 63 5 May 2022 506th marshallward 🇺🇸 909 83 10 May 2022 507th primo-ppcg 🇹🇭 909 93 7 May 2022 507th AlephSquirrel 909 93 21 Jan 2023 507th kg583 🇺🇸 909 93 26 Dec 2024 507th CLOStrophobic 🇮🇹 909 93 17 Jan 2025 507th edsrzf 🇳🇿 909 93 3 Jul 2025 512th edsrzf 🇳🇿 908 72 3 Jul 2025 513th DialFrost 🇸🇬 908 76 3 Aug 2025 514th Shanethegamer 🇺🇸 908 77 15 May 2023 515th ovs-code 🇩🇪 908 84 25 Sep 2022 515th GrayJoKing 🇦🇺 908 84 11 Aug 2023 517th Betuaredead 907 60 5 Jan 2023 517th Yewzir 🇧🇪 907 60 12 Feb 2023 517th Steffan153 🇫🇮 907 60 23 Feb 2023 517th DialFrost 🇸🇬 907 60 30 Jul 2024 517th GolfingSuccess 🇬🇷 907 60 16 Oct 2024 517th sean-niemann 🇺🇸 907 60 7 Mar 2025 523rd MeWhenI 🇻🇦 907 110 9 Feb 2023 523rd edsrzf 🇳🇿 907 110 28 Nov 2024 523rd targrik 907 110 30 Jun 2025 Prev 451–525 of 3,340 Next
