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 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 Hilbert Curve Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime 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 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 Groovy Harbour Hare Haxe Hush Hy iogii Knight 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 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 Groovy Harbour Hare Haxe Hush Hy iogii Knight 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 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 Hilbert Curve Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Bytes Time 220th nathanadams 🇳🇿 938 57 24 Apr 2023 220th hacker112 🇸🇪 938 57 20 Jun 2024 220th thisishowmymindworks 🇳🇴 938 57 28 Jun 2024 220th Salutations45 938 57 18 Nov 2024 220th daniel-cardone 938 57 3 Jul 2025 231st primo-ppcg 🇹🇭 938 58 13 Nov 2022 231st clockworknazo 938 58 15 Nov 2022 231st Lydxn 🇨🇦 938 58 7 Feb 2023 231st xsot 🇸🇬 938 58 28 Jun 2024 231st Salutations45 938 58 18 Dec 2024 236th TFeld00 🇩🇰 938 71 17 May 2022 236th DialFrost 🇸🇬 938 71 15 Nov 2022 236th StefanHabel 🇨🇦 938 71 29 Nov 2022 236th nstearns96 🇬🇧 938 71 11 Jan 2023 236th hallvabo 🇳🇴 938 71 7 Feb 2023 236th anter69 🇭🇺 938 71 21 May 2024 236th rucin93 🇵🇱 938 71 10 Jul 2024 243rd Irratix 🇳🇱 938 83 4 May 2022 243rd nwellnhof 🇩🇪 938 83 4 May 2022 243rd ScottHamper 938 83 5 May 2022 243rd Romain-1 🇫🇷 938 83 1 Jun 2022 243rd Gaddy 🇫🇷 938 83 1 Jun 2022 243rd 5quiwyrm 938 83 4 Sep 2022 243rd Betuaredead 938 83 5 Jan 2023 243rd Yewzir 🇧🇪 938 83 12 Feb 2023 243rd btnlq 938 83 9 Mar 2023 243rd Adix-null 🇱🇹 938 83 17 May 2023 243rd AdrienHache 🇫🇷 938 83 8 Jun 2023 243rd gblikas 938 83 23 Jul 2023 243rd KrausRaus 🇺🇸 938 83 31 Jul 2023 243rd namelessiw 938 83 9 Apr 2025 243rd dokutan 938 83 9 Apr 2025 243rd m-tkach 🇺🇦 938 83 10 Apr 2025 243rd DialFrost 🇸🇬 938 83 10 Apr 2025 243rd Pecanolith 938 83 19 Apr 2025 243rd Tyrant7 938 83 19 Apr 2025 243rd Yax42 🇫🇷 938 83 19 Apr 2025 243rd MeWhenI 🇻🇦 938 83 19 Jun 2025 243rd sean-niemann 🇺🇸 938 83 20 Jun 2025 243rd stefangimmillaro 938 83 20 Jun 2025 266th Lydxn 🇨🇦 938 125 6 May 2022 266th JayXon 🇺🇸 938 125 9 May 2022 268th grey0ut 937 48 8 Apr 2025 269th GolfingSuccess 🇬🇷 937 49 12 Aug 2024 269th Shanethegamer 🇺🇸 937 49 12 Aug 2024 269th Steffan153 🇫🇮 937 49 12 Aug 2024 269th MeWhenI 🇻🇦 937 49 13 Aug 2024 269th DialFrost 🇸🇬 937 49 13 Aug 2024 269th GrayJoKing 🇦🇺 937 49 15 Aug 2024 269th btnlq 937 49 16 Aug 2024 269th emgordon154 937 49 19 Aug 2024 269th ovs-code 🇩🇪 937 49 19 Aug 2024 269th mousetail 🇳🇱 937 49 13 Sep 2024 269th lynn 937 49 20 Dec 2024 269th weeble 937 49 20 Dec 2024 269th sean-niemann 🇺🇸 937 49 11 Jan 2025 282nd nwellnhof 🇩🇪 932 42 4 May 2022 282nd Lydxn 🇨🇦 932 42 4 May 2022 282nd GrayJoKing 🇦🇺 932 42 4 May 2022 282nd Steffan153 🇫🇮 932 42 16 Dec 2022 282nd sisyphus-ppcg 🇦🇺 932 42 31 Jan 2023 282nd ovs-code 🇩🇪 932 42 30 Dec 2023 282nd sean-niemann 🇺🇸 932 42 8 Mar 2025 289th emplv 🇱🇻 932 60 5 May 2022 289th GrayJoKing 🇦🇺 932 60 6 May 2022 289th targrik 932 60 24 Dec 2024 289th xsot 🇸🇬 932 60 1 May 2025 293rd m-tkach 🇺🇦 931 91 5 May 2022 293rd 09cf 931 91 4 Oct 2023 295th stefangimmillaro 931 126 4 May 2022 295th Irratix 🇳🇱 931 126 4 May 2022 295th MeWhenI 🇻🇦 931 126 4 May 2022 295th janbehrens 🇩🇪 931 126 4 May 2022 295th shellbertt 🇨🇦 931 126 4 May 2022 295th inventshah 931 126 4 May 2022 Prev 226–300 of 3,278 Next