Collatz in all languages in bytes. 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Multitap Input 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Multitap Input 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 720th primo-ppcg 🇹🇭 884 84 36ms 29 Jun 2022 720th MeWhenI 🇻🇦 884 84 38ms 30 Dec 2025 723rd primo-ppcg 🇹🇭 884 193 107ms 14 Aug 2025 724th Shanethegamer 🇺🇸 883 51 400ms 15 May 2023 725th GrayJoKing 🇦🇺 883 60 183ms 24 Oct 2024 726th CaedenHarper 🇨🇦 882 54 1,364ms 27 Sep 2025 726th sean-niemann 🇺🇸 882 54 1,464ms 27 Sep 2025 726th albanian-laundromat 🇺🇸 882 54 1,468ms 14 Nov 2025 726th xsot 🇸🇬 882 54 1,138ms 15 Nov 2025 730th Shanethegamer 🇺🇸 882 73 145ms 8 May 2025 730th DialFrost 🇸🇬 882 73 149ms 3 Jun 2025 730th edsrzf 🇳🇿 882 73 144ms 4 Jul 2025 733rd dokutan 881 62 5ms 28 Apr 2025 734th johnnythedoggie 881 72 96ms 13 May 2022 734th kaascevich 881 72 96ms 8 Jul 2025 734th madeforlosers 881 72 102ms 17 Mar 2026 737th Shanethegamer 🇺🇸 881 142 1,423ms 27 Mar 2025 737th DialFrost 🇸🇬 881 142 1,456ms 28 Mar 2025 737th emgordon154 881 142 1,661ms 10 Apr 2025 737th GolfingSuccess 🇬🇷 881 142 1,427ms 6 Dec 2025 741st DialFrost 🇸🇬 880 86 40ms 24 Oct 2024 741st stefangimmillaro 880 86 39ms 14 Jan 2025 743rd Shanethegamer 🇺🇸 879 66 172ms 4 May 2022 743rd scpchicken 🇵🇼 879 66 254ms 5 May 2022 743rd sisyphus-ppcg 🇦🇺 879 66 173ms 6 May 2022 743rd Natanaelel 🇸🇪 879 66 144ms 15 Jun 2022 743rd Z-snails 879 66 254ms 27 Feb 2023 743rd Jeremy-Stafford 879 66 258ms 27 Feb 2023 743rd alomiF 879 66 287ms 1 Sep 2023 743rd btnlq 879 66 145ms 17 Oct 2023 743rd Shengxuan-Zhang 879 66 278ms 20 Feb 2026 752nd c0d3-4-F00d 🇩🇪 878 61 12ms 6 May 2022 752nd jackkav 878 61 14ms 26 Jun 2022 752nd TechNolaByte 878 61 10ms 6 Jul 2022 752nd Heathcorp 🇦🇺 878 61 13ms 17 Jul 2022 752nd C0de5mith 🇺🇸 878 61 12ms 3 Aug 2022 752nd sebipopa 🇷🇴 878 61 10ms 18 Aug 2022 752nd moikaturns 🇬🇧 878 61 12ms 25 Sep 2022 752nd FlorianCassayre 🇫🇷 878 61 11ms 27 Sep 2022 752nd Mazn3k 878 61 12ms 1 Feb 2023 752nd tvcv901 878 61 10ms 22 Mar 2023 752nd unfinishedprogram 878 61 11ms 19 Jul 2023 752nd snoozingnewt 🇨🇦 878 61 16ms 23 Sep 2023 752nd funnyboy-roks 878 61 12ms 9 May 2024 752nd bac0id 878 61 13ms 29 Jun 2024 752nd FortuiteMan 🇫🇷 878 61 15ms 10 Oct 2024 752nd RobertHoeh 878 61 13ms 5 Apr 2025 752nd LvLError 878 61 11ms 29 May 2025 752nd miles-evan 878 61 12ms 5 Aug 2025 752nd alexsave 878 61 12ms 13 Oct 2025 752nd ComradeSquirrel 878 61 12ms 8 days ago 772nd madeforlosers 878 95 415ms 5 days ago 773rd kg583 🇺🇸 878 105 11ms 14 Mar 2026 773rd Steffan153 🇫🇮 878 105 12ms 26 days ago 775th nwellnhof 🇩🇪 877 53 6ms 4 May 2022 775th GrayJoKing 🇦🇺 877 53 7ms 6 May 2022 777th MeWhenI 🇻🇦 877 110 346ms 9 Feb 2023 777th targrik 877 110 340ms 30 Jun 2025 779th DialFrost 🇸🇬 876 69 99ms 15 Jul 2024 780th AlephSquirrel 876 80 12ms 20 Apr 2023 780th ashtraypettingzoo 🇺🇸 876 80 14ms 1 Apr 2024 782nd c0d3-4-F00d 🇩🇪 876 89 364ms 5 May 2022 782nd fkantelberg 876 89 351ms 15 Jul 2023 782nd TRexOnGit 876 89 359ms 16 Feb 2024 785th inventshah 876 97 61ms 6 May 2022 785th roupiq 🇵🇱 876 97 58ms 22 Nov 2023 785th emgordon154 876 97 59ms 8 Feb 2026 788th Shanethegamer 🇺🇸 876 98 110ms 15 Apr 2025 788th GolfingSuccess 🇬🇷 876 98 102ms 28 Nov 2025 788th DialFrost 🇸🇬 876 98 109ms 1 Dec 2025 791st Steffan153 🇫🇮 875 83 465ms 9 Apr 2023 791st ovs-code 🇩🇪 875 83 57ms 1 Jul 2024 793rd Irratix 🇳🇱 874 72 2ms 4 May 2022 793rd m-tkach 🇺🇦 874 72 2ms 4 May 2022 793rd jared-hughes 874 72 2ms 6 Jul 2022 793rd michael-pruglo 🇺🇦 874 72 2ms 13 Jul 2022 793rd Steffan153 🇫🇮 874 72 2ms 3 Jan 2023 793rd MeWhenI 🇻🇦 874 72 2ms 7 May 2023 793rd ListeriaM 874 72 2ms 22 Aug 2023 793rd JohandeRuiter 🇳🇱 874 72 3ms 14 Sep 2024 First Prev 721–800 of 3,752 Next Last