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 Trinomial Triangle 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 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 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 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 Turtle Tutorial # Golfer Points Bytes Time 593rd bltnppcnt 901 74 3 Jan 2025 593rd ZorblaxV 901 74 12 Jan 2025 593rd yokasuretsu 901 74 13 Jan 2025 593rd Artemis21 🇬🇧 901 74 17 Jan 2025 593rd gdpr777 901 74 10 Feb 2025 593rd Pyroan 901 74 27 Mar 2025 593rd Squimbletin 901 74 19 Apr 2025 593rd Kowalskiexe 🇵🇱 901 74 19 Apr 2025 593rd Dandandooo 901 74 23 Apr 2025 593rd khangtm123 901 74 4 May 2025 593rd 40fied4t 901 74 6 May 2025 593rd keelimeguy 🇺🇸 901 74 13 May 2025 593rd TheZwierzLF 🇵🇱 901 74 21 May 2025 593rd kbeat 🇰🇿 901 74 21 May 2025 593rd LvLError 901 74 29 May 2025 593rd Lv0Sys 🇵🇱 901 74 30 May 2025 593rd ffelixm 901 74 3 Jun 2025 593rd Flekay 🇩🇪 901 74 19 Jun 2025 593rd DoubleUynn 901 74 25 Jun 2025 593rd osNiko 🇧🇷 901 74 26 Jul 2025 593rd wobblybits 901 74 13 Aug 2025 593rd denisfouchard 901 74 23 Aug 2025 593rd Emutis 🇱🇹 901 74 23 Aug 2025 593rd edsrzf 🇳🇿 901 74 10 Sep 2025 593rd 1024An 🇮🇳 901 74 11 Sep 2025 593rd pauljoohyunkim 901 74 18 days ago 593rd joll05 🇸🇪 901 74 11 days ago 593rd retrohun 901 74 9 days ago 593rd solisolu 901 74 8 days ago 593rd Code-Coder-coder 901 74 20 hours ago 706th Lydxn 🇨🇦 900 108 6 May 2022 706th CaedenHarper 🇨🇦 900 108 7 days ago 708th SirBogman 🇺🇸 899 50 5 May 2022 708th nwellnhof 🇩🇪 899 50 3 Jun 2022 708th Lydxn 🇨🇦 899 50 15 Aug 2022 708th Steffan153 🇫🇮 899 50 9 Aug 2024 712th DialFrost 🇸🇬 899 69 15 Jul 2024 713th Lydxn 🇨🇦 898 48 5 May 2022 713th p-zubieta 898 48 6 Mar 2024 715th GrayJoKing 🇦🇺 898 70 6 May 2022 715th saito-ta 🇯🇵 898 70 21 Dec 2023 715th ovs-code 🇩🇪 898 70 17 Feb 2024 715th trinityy-7 898 70 7 Aug 2025 715th KasperKivimaeki 🇫🇮 898 70 8 Aug 2025 720th Lydxn 🇨🇦 898 72 16 Jul 2023 721st GrayJoKing 🇦🇺 898 91 19 Jan 2023 722nd DialFrost 🇸🇬 897 29 15 Mar 2025 723rd Steffan153 🇫🇮 897 59 10 Aug 2024 723rd rucin93 🇵🇱 897 59 13 Oct 2024 723rd sean-niemann 🇺🇸 897 59 13 Oct 2024 723rd lukegustafson 🇺🇸 897 59 24 Oct 2024 727th edsrzf 🇳🇿 897 78 26 Oct 2024 727th kg583 🇺🇸 897 78 17 days ago 729th Ripick 896 73 8 May 2023 730th MichalMarsalek 🇨🇿 895 87 5 May 2022 730th Kloppermand 🇩🇰 895 87 7 Oct 2022 730th bwat2 895 87 6 Apr 2023 733rd ovs-code 🇩🇪 895 89 24 Jul 2024 733rd jipsong 🇩🇪 895 89 7 Apr 2025 735th oeb25 894 93 16 May 2022 735th snobee 🇨🇦 894 93 8 Dec 2022 735th logvp 894 93 2 Jan 2024 735th elgan65536 894 93 5 Mar 2024 735th smartiel 894 93 12 Aug 2024 735th trist224 🇫🇷 894 93 12 Aug 2024 735th nullie 894 93 19 Dec 2024 735th lolgeny 894 93 22 Feb 2025 743rd Shanethegamer 🇺🇸 893 61 31 Oct 2022 743rd MeWhenI 🇻🇦 893 61 4 Nov 2022 745th m-tkach 🇺🇦 893 117 7 May 2022 745th Lydxn 🇨🇦 893 117 7 May 2022 747th Steffan153 🇫🇮 892 52 31 Dec 2022 748th stefangimmillaro 892 71 2 Oct 2022 748th Steffan153 🇫🇮 892 71 23 Feb 2023 748th Shanethegamer 🇺🇸 892 71 16 May 2023 First Prev 676–750 of 3,394 Next Last
