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 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 Calendar 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 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 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 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 Calendar 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 745th ListeriaM 873 72 2ms 22 Aug 2023 745th JohandeRuiter 🇳🇱 873 72 3ms 14 Sep 2024 745th larcherMTT 873 72 2ms 5 Oct 2024 745th snyderek 🇺🇸 873 72 3ms 19 Feb 2025 745th 5quiwyrm 873 72 2ms 29 Jun 2025 745th TeodorDyakov 🇧🇬 873 72 3ms 8 Jul 2025 745th xiaoyiming123 873 72 2ms 12 Jul 2025 758th ovs-code 🇩🇪 873 83 54ms 1 Jul 2024 759th Andriamanitra 🇫🇮 872 54 37ms 21 Jul 2022 759th jared-hughes 872 54 37ms 12 Sep 2022 759th OhmNomNom 872 54 37ms 7 Oct 2022 759th olleicua 🇺🇸 872 54 39ms 21 Jan 2024 759th LostSyntax21 🇬🇧 872 54 38ms 12 Mar 2025 759th AbrahamJLR 🇻🇪 872 54 36ms 4 Jun 2025 759th vishal-mohanty 872 54 36ms 25 Aug 2025 766th DialFrost 🇸🇬 872 64 5ms 10 Jul 2024 767th dieggsy 872 97 28ms 8 Oct 2024 768th ulucs 871 35 9ms 8 May 2022 768th bstrat 871 35 9ms 6 Jun 2024 768th wh3n3v3r 🇨🇿 871 35 8ms 18 Nov 2024 771st scpchicken 🇵🇼 871 45 406ms 4 May 2022 771st SirBogman 🇺🇸 871 45 300ms 5 May 2022 773rd TFeld00 🇩🇰 871 71 24ms 17 May 2022 773rd DialFrost 🇸🇬 871 71 24ms 15 Nov 2022 773rd StefanHabel 🇨🇦 871 71 18ms 29 Nov 2022 773rd nstearns96 🇬🇧 871 71 18ms 11 Jan 2023 773rd hallvabo 🇳🇴 871 71 19ms 7 Feb 2023 773rd anter69 🇭🇺 871 71 17ms 21 May 2024 773rd rucin93 🇵🇱 871 71 17ms 10 Jul 2024 773rd lelbal 871 71 19ms 26 Aug 2025 773rd HETHAT 🇩🇿 871 71 23ms 23 Sep 2025 773rd 09cf 871 71 17ms 22 days ago 773rd blaztoma 🇱🇹 871 71 24ms 15 days ago 773rd Languag3 871 71 23ms 5 days ago 785th MeWhenI 🇻🇦 871 85 41ms 27 Jun 2022 785th Shanethegamer 🇺🇸 871 85 38ms 15 May 2023 785th albanian-laundromat 871 85 40ms 25 Aug 2025 788th ovs-code 🇩🇪 871 133 42ms 8 Jul 2024 789th CaedenHarper 🇨🇦 869 60 431ms 28 Sep 2025 790th Steffan153 🇫🇮 869 82 1,270ms 23 Feb 2023 791st Frowny 868 38 40ms 5 May 2022 791st stackofbears 868 38 42ms 14 Mar 2025 793rd steffan-polygolf 868 73 84ms 23 Feb 2023 793rd MWI-polygolf 868 73 82ms 6 Dec 2023 793rd HumanoidCPU 868 73 77ms 7 May 2024 796th mtirado1 868 75 7ms 13 Aug 2022 797th 123mjb 868 96 356ms 20 days ago 797th noescareno 868 96 406ms 19 days ago 799th nwellnhof 🇩🇪 868 111 271ms 4 May 2022 799th emplv 🇱🇻 868 111 296ms 5 May 2022 799th Shanethegamer 🇺🇸 868 111 261ms 21 Nov 2023 802nd pardouin 🇫🇷 867 61 129ms 7 Aug 2024 803rd MeWhenI 🇻🇦 867 92 398ms 10 Oct 2022 803rd Betuaredead 867 92 468ms 5 Jan 2023 803rd Yax42 🇫🇷 867 92 420ms 4 Oct 2025 806th Shanethegamer 🇺🇸 867 98 106ms 15 Apr 2025 806th GolfingSuccess 🇬🇷 867 98 98ms 12 days ago 806th DialFrost 🇸🇬 867 98 94ms 9 days ago 809th TylerBloom 866 96 180ms 22 Mar 2024 810th 5quiwyrm 865 52 279ms 4 Sep 2022 810th MeWhenI 🇻🇦 865 52 261ms 28 Jan 2023 810th Feniske 🇫🇷 865 52 208ms 7 Nov 2023 810th dcgjb 865 52 251ms 29 Jan 2024 810th JPRuskin 🇬🇧 865 52 290ms 7 Apr 2025 810th IISResetMe 865 52 259ms 7 Apr 2025 810th Ripick 865 52 261ms 1 Jun 2025 817th Andriamanitra 🇫🇮 865 67 144ms 26 Apr 2023 818th MeWhenI 🇻🇦 865 81 8ms 23 May 2023 819th bac0id 865 90 315ms 26 Sep 2023 819th deadp4nda 🇩🇪 865 90 315ms 26 Apr 2024 819th 123mjb 865 90 321ms 23 Jun 2025 819th michelebastione 🇮🇹 865 90 365ms 24 Aug 2025 819th razvandmtr 🇷🇴 865 90 342ms 6 Nov 2025 824th shellbertt 🇨🇦 865 98 56ms 9 May 2022 824th iakolzin 865 98 55ms 26 May 2022 First Prev 751–825 of 3,513 Next Last