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 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 Multitap Input 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 ><> 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 ALGOL 68 APL ArkScript Arturo Befunge BQN CJam CoffeeScript Egel 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 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 ALGOL 68 APL ArkScript Arturo Befunge BQN CJam CoffeeScript Egel 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 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 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 Multitap Input 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 712th tvcv901 877 61 12ms 22 Mar 2023 712th unfinishedprogram 877 61 12ms 19 Jul 2023 712th snoozingnewt 🇨🇦 877 61 10ms 23 Sep 2023 712th funnyboy-roks 877 61 11ms 9 May 2024 712th bac0id 877 61 13ms 29 Jun 2024 712th madex 🇩🇪 877 61 11ms 9 Jul 2024 712th FortuiteMan 🇫🇷 877 61 12ms 10 Oct 2024 712th RobertHoeh 877 61 10ms 5 Apr 2025 712th LvLError 877 61 10ms 29 May 2025 712th miles-evan 877 61 11ms 5 Aug 2025 712th alexsave 877 61 10ms 13 Oct 2025 732nd nwellnhof 🇩🇪 876 53 6ms 4 May 2022 732nd GrayJoKing 🇦🇺 876 53 7ms 6 May 2022 734th GolfingSuccess 🇬🇷 876 57 819ms 29 Aug 2025 735th MeWhenI 🇻🇦 876 110 247ms 9 Feb 2023 735th edsrzf 🇳🇿 876 110 262ms 28 Nov 2024 735th targrik 876 110 261ms 30 Jun 2025 738th AlephSquirrel 875 80 12ms 20 Apr 2023 738th ashtraypettingzoo 🇺🇸 875 80 15ms 1 Apr 2024 740th c0d3-4-F00d 🇩🇪 875 89 368ms 5 May 2022 740th fkantelberg 875 89 407ms 15 Jul 2023 740th TRexOnGit 875 89 432ms 16 Feb 2024 743rd inventshah 875 97 57ms 6 May 2022 743rd roupiq 🇵🇱 875 97 55ms 22 Nov 2023 745th DialFrost 🇸🇬 874 69 88ms 15 Jul 2024 746th Irratix 🇳🇱 874 72 2ms 4 May 2022 746th m-tkach 🇺🇦 874 72 2ms 4 May 2022 746th jared-hughes 874 72 2ms 6 Jul 2022 746th michael-pruglo 🇺🇦 874 72 2ms 13 Jul 2022 746th Steffan153 🇫🇮 874 72 2ms 3 Jan 2023 746th MeWhenI 🇻🇦 874 72 3ms 7 May 2023 746th ListeriaM 874 72 2ms 22 Aug 2023 746th JohandeRuiter 🇳🇱 874 72 3ms 14 Sep 2024 746th larcherMTT 874 72 2ms 5 Oct 2024 746th snyderek 🇺🇸 874 72 3ms 19 Feb 2025 746th 5quiwyrm 874 72 2ms 29 Jun 2025 746th TeodorDyakov 🇧🇬 874 72 3ms 8 Jul 2025 746th xiaoyiming123 874 72 2ms 12 Jul 2025 759th Steffan153 🇫🇮 874 83 510ms 9 Apr 2023 760th ovs-code 🇩🇪 874 85 16ms 11 Dec 2023 761st ovs-code 🇩🇪 873 83 54ms 1 Jul 2024 762nd Andriamanitra 🇫🇮 872 54 41ms 21 Jul 2022 762nd jared-hughes 872 54 37ms 12 Sep 2022 762nd OhmNomNom 872 54 37ms 7 Oct 2022 762nd olleicua 🇺🇸 872 54 41ms 21 Jan 2024 762nd LostSyntax21 🇬🇧 872 54 42ms 12 Mar 2025 762nd AbrahamJLR 🇻🇪 872 54 40ms 4 Jun 2025 762nd vishal-mohanty 872 54 40ms 25 Aug 2025 769th DialFrost 🇸🇬 872 64 5ms 10 Jul 2024 770th Shanethegamer 🇺🇸 872 85 38ms 15 May 2023 770th albanian-laundromat 872 85 40ms 25 Aug 2025 772nd dieggsy 872 97 28ms 8 Oct 2024 773rd ulucs 871 35 9ms 8 May 2022 773rd bstrat 871 35 9ms 6 Jun 2024 773rd wh3n3v3r 🇨🇿 871 35 8ms 18 Nov 2024 776th scpchicken 🇵🇼 871 45 365ms 4 May 2022 776th SirBogman 🇺🇸 871 45 225ms 5 May 2022 778th TFeld00 🇩🇰 871 71 24ms 17 May 2022 778th DialFrost 🇸🇬 871 71 24ms 15 Nov 2022 778th StefanHabel 🇨🇦 871 71 18ms 29 Nov 2022 778th nstearns96 🇬🇧 871 71 18ms 11 Jan 2023 778th hallvabo 🇳🇴 871 71 19ms 7 Feb 2023 778th anter69 🇭🇺 871 71 17ms 21 May 2024 778th rucin93 🇵🇱 871 71 17ms 10 Jul 2024 778th lelbal 871 71 19ms 26 Aug 2025 778th HETHAT 🇩🇿 871 71 23ms 23 Sep 2025 778th 09cf 871 71 17ms 18 Nov 2025 778th blaztoma 🇱🇹 871 71 24ms 25 Nov 2025 778th Languag3 871 71 23ms 5 Dec 2025 778th CommandLeo 🇮🇹 871 71 24ms 15 days ago 791st ovs-code 🇩🇪 871 133 42ms 8 Jul 2024 792nd emgordon154 870 160 1,606ms 24 Dec 2025 792nd DialFrost 🇸🇬 870 160 1,669ms 6 days ago 794th CaedenHarper 🇨🇦 869 60 434ms 28 Sep 2025 795th Steffan153 🇫🇮 869 82 1,388ms 23 Feb 2023 796th 123mjb 869 96 356ms 20 Nov 2025 796th noescareno 869 96 406ms 21 Nov 2025 798th Shanethegamer 🇺🇸 869 98 127ms 15 Apr 2025 798th GolfingSuccess 🇬🇷 869 98 104ms 28 Nov 2025 798th DialFrost 🇸🇬 869 98 110ms 1 Dec 2025 First Prev 721–800 of 3,537 Next Last