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 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 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 Apéry’s Constant Binary Lambda Calculus 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 NFA Simulator Numbrix 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 ><> ALGOL 68 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 ArkScript 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 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 ArkScript 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 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 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 Apéry’s Constant Binary Lambda Calculus 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 NFA Simulator Numbrix 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 Bytes Time Submitted 720th scpchicken 🇵🇼 878 66 254ms 5 May 2022 720th sisyphus-ppcg 🇦🇺 878 66 173ms 6 May 2022 720th Natanaelel 🇸🇪 878 66 144ms 15 Jun 2022 720th Z-snails 878 66 254ms 27 Feb 2023 720th Jeremy-Stafford 878 66 258ms 27 Feb 2023 720th alomiF 878 66 293ms 1 Sep 2023 720th btnlq 878 66 145ms 17 Oct 2023 720th Shengxuan-Zhang 878 66 278ms 5 days ago 729th DialFrost 🇸🇬 878 86 40ms 24 Oct 2024 729th stefangimmillaro 878 86 39ms 14 Jan 2025 731st emgordon154 878 97 104ms 3 Dec 2025 732nd c0d3-4-F00d 🇩🇪 877 61 12ms 6 May 2022 732nd jackkav 877 61 10ms 26 Jun 2022 732nd TechNolaByte 877 61 11ms 6 Jul 2022 732nd Heathcorp 🇦🇺 877 61 11ms 17 Jul 2022 732nd C0de5mith 🇺🇸 877 61 12ms 3 Aug 2022 732nd sebipopa 🇷🇴 877 61 14ms 18 Aug 2022 732nd moikaturns 🇬🇧 877 61 10ms 25 Sep 2022 732nd FlorianCassayre 🇫🇷 877 61 11ms 27 Sep 2022 732nd Mazn3k 877 61 10ms 1 Feb 2023 732nd tvcv901 877 61 11ms 22 Mar 2023 732nd unfinishedprogram 877 61 10ms 19 Jul 2023 732nd snoozingnewt 🇨🇦 877 61 11ms 23 Sep 2023 732nd funnyboy-roks 877 61 11ms 9 May 2024 732nd bac0id 877 61 10ms 29 Jun 2024 732nd madex 🇩🇪 877 61 10ms 9 Jul 2024 732nd FortuiteMan 🇫🇷 877 61 11ms 10 Oct 2024 732nd RobertHoeh 877 61 12ms 5 Apr 2025 732nd LvLError 877 61 10ms 29 May 2025 732nd miles-evan 877 61 11ms 5 Aug 2025 732nd alexsave 877 61 10ms 13 Oct 2025 752nd nwellnhof 🇩🇪 876 53 6ms 4 May 2022 752nd GrayJoKing 🇦🇺 876 53 7ms 6 May 2022 754th c0d3-4-F00d 🇩🇪 876 89 368ms 5 May 2022 754th fkantelberg 876 89 388ms 15 Jul 2023 754th TRexOnGit 876 89 423ms 16 Feb 2024 757th MeWhenI 🇻🇦 876 110 281ms 9 Feb 2023 757th edsrzf 🇳🇿 876 110 292ms 28 Nov 2024 757th targrik 876 110 271ms 30 Jun 2025 760th AlephSquirrel 875 80 12ms 20 Apr 2023 760th ashtraypettingzoo 🇺🇸 875 80 14ms 1 Apr 2024 762nd inventshah 875 97 62ms 6 May 2022 762nd roupiq 🇵🇱 875 97 62ms 22 Nov 2023 762nd emgordon154 875 97 63ms 17 days ago 765th DialFrost 🇸🇬 874 69 88ms 15 Jul 2024 766th Irratix 🇳🇱 874 72 2ms 4 May 2022 766th m-tkach 🇺🇦 874 72 2ms 4 May 2022 766th jared-hughes 874 72 2ms 6 Jul 2022 766th michael-pruglo 🇺🇦 874 72 2ms 13 Jul 2022 766th Steffan153 🇫🇮 874 72 2ms 3 Jan 2023 766th MeWhenI 🇻🇦 874 72 2ms 7 May 2023 766th ListeriaM 874 72 2ms 22 Aug 2023 766th JohandeRuiter 🇳🇱 874 72 3ms 14 Sep 2024 766th larcherMTT 874 72 2ms 5 Oct 2024 766th snyderek 🇺🇸 874 72 2ms 19 Feb 2025 766th 5quiwyrm 874 72 2ms 29 Jun 2025 766th TeodorDyakov 🇧🇬 874 72 3ms 8 Jul 2025 766th xiaoyiming123 874 72 2ms 12 Jul 2025 779th Steffan153 🇫🇮 874 83 481ms 9 Apr 2023 780th ovs-code 🇩🇪 874 85 16ms 11 Dec 2023 781st DialFrost 🇸🇬 873 64 5ms 10 Jul 2024 782nd ovs-code 🇩🇪 873 83 57ms 1 Jul 2024 783rd Andriamanitra 🇫🇮 872 54 41ms 21 Jul 2022 783rd jared-hughes 872 54 37ms 12 Sep 2022 783rd OhmNomNom 872 54 37ms 7 Oct 2022 783rd olleicua 🇺🇸 872 54 41ms 21 Jan 2024 783rd LostSyntax21 🇬🇧 872 54 41ms 12 Mar 2025 783rd AbrahamJLR 🇻🇪 872 54 40ms 4 Jun 2025 783rd vishal-mohanty 872 54 40ms 25 Aug 2025 790th Shanethegamer 🇺🇸 872 85 38ms 15 May 2023 790th albanian-laundromat 872 85 40ms 25 Aug 2025 792nd dieggsy 872 97 28ms 8 Oct 2024 793rd ulucs 871 35 9ms 8 May 2022 793rd bstrat 871 35 8ms 6 Jun 2024 793rd wh3n3v3r 🇨🇿 871 35 8ms 18 Nov 2024 796th scpchicken 🇵🇼 871 45 332ms 4 May 2022 796th SirBogman 🇺🇸 871 45 230ms 5 May 2022 798th TFeld00 🇩🇰 871 71 25ms 17 May 2022 798th DialFrost 🇸🇬 871 71 25ms 15 Nov 2022 798th StefanHabel 🇨🇦 871 71 19ms 29 Nov 2022 First Prev 721–800 of 3,598 Next Last