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 746th MeWhenI 🇻🇦 873 72 3ms 7 May 2023 746th ListeriaM 873 72 2ms 22 Aug 2023 746th JohandeRuiter 🇳🇱 873 72 3ms 14 Sep 2024 746th larcherMTT 873 72 2ms 5 Oct 2024 746th snyderek 🇺🇸 873 72 3ms 19 Feb 2025 746th 5quiwyrm 873 72 2ms 29 Jun 2025 746th TeodorDyakov 🇧🇬 873 72 3ms 8 Jul 2025 746th xiaoyiming123 873 72 2ms 12 Jul 2025 759th ovs-code 🇩🇪 873 83 54ms 1 Jul 2024 760th Andriamanitra 🇫🇮 872 54 37ms 21 Jul 2022 760th jared-hughes 872 54 37ms 12 Sep 2022 760th OhmNomNom 872 54 37ms 7 Oct 2022 760th olleicua 🇺🇸 872 54 39ms 21 Jan 2024 760th LostSyntax21 🇬🇧 872 54 38ms 12 Mar 2025 760th AbrahamJLR 🇻🇪 872 54 36ms 4 Jun 2025 760th vishal-mohanty 872 54 36ms 25 Aug 2025 767th DialFrost 🇸🇬 872 64 5ms 10 Jul 2024 768th dieggsy 872 97 28ms 8 Oct 2024 769th ulucs 871 35 9ms 8 May 2022 769th bstrat 871 35 9ms 6 Jun 2024 769th wh3n3v3r 🇨🇿 871 35 8ms 18 Nov 2024 772nd scpchicken 🇵🇼 871 45 406ms 4 May 2022 772nd SirBogman 🇺🇸 871 45 300ms 5 May 2022 774th TFeld00 🇩🇰 871 71 24ms 17 May 2022 774th DialFrost 🇸🇬 871 71 24ms 15 Nov 2022 774th StefanHabel 🇨🇦 871 71 18ms 29 Nov 2022 774th nstearns96 🇬🇧 871 71 18ms 11 Jan 2023 774th hallvabo 🇳🇴 871 71 19ms 7 Feb 2023 774th anter69 🇭🇺 871 71 17ms 21 May 2024 774th rucin93 🇵🇱 871 71 17ms 10 Jul 2024 774th lelbal 871 71 19ms 26 Aug 2025 774th HETHAT 🇩🇿 871 71 23ms 23 Sep 2025 774th 09cf 871 71 17ms 23 days ago 774th blaztoma 🇱🇹 871 71 24ms 17 days ago 774th Languag3 871 71 23ms 7 days ago 786th MeWhenI 🇻🇦 871 85 41ms 27 Jun 2022 786th Shanethegamer 🇺🇸 871 85 38ms 15 May 2023 786th albanian-laundromat 871 85 40ms 25 Aug 2025 789th ovs-code 🇩🇪 871 133 42ms 8 Jul 2024 790th CaedenHarper 🇨🇦 869 60 431ms 28 Sep 2025 791st Steffan153 🇫🇮 869 82 1,287ms 23 Feb 2023 792nd Frowny 868 38 40ms 5 May 2022 792nd stackofbears 868 38 42ms 14 Mar 2025 794th steffan-polygolf 868 73 84ms 23 Feb 2023 794th MWI-polygolf 868 73 82ms 6 Dec 2023 794th HumanoidCPU 868 73 77ms 7 May 2024 797th mtirado1 868 75 7ms 13 Aug 2022 798th 123mjb 868 96 356ms 21 days ago 798th noescareno 868 96 406ms 20 days ago 800th nwellnhof 🇩🇪 868 111 271ms 4 May 2022 800th emplv 🇱🇻 868 111 296ms 5 May 2022 800th Shanethegamer 🇺🇸 868 111 261ms 21 Nov 2023 803rd pardouin 🇫🇷 867 61 129ms 7 Aug 2024 804th MeWhenI 🇻🇦 867 92 398ms 10 Oct 2022 804th Betuaredead 867 92 468ms 5 Jan 2023 804th Yax42 🇫🇷 867 92 420ms 4 Oct 2025 807th Shanethegamer 🇺🇸 867 98 100ms 15 Apr 2025 807th GolfingSuccess 🇬🇷 867 98 111ms 14 days ago 807th DialFrost 🇸🇬 867 98 94ms 10 days ago 810th TylerBloom 866 96 115ms 22 Mar 2024 811th 5quiwyrm 865 52 300ms 4 Sep 2022 811th MeWhenI 🇻🇦 865 52 280ms 28 Jan 2023 811th Feniske 🇫🇷 865 52 280ms 7 Nov 2023 811th dcgjb 865 52 297ms 29 Jan 2024 811th JPRuskin 🇬🇧 865 52 313ms 7 Apr 2025 811th IISResetMe 865 52 267ms 7 Apr 2025 811th Ripick 865 52 266ms 1 Jun 2025 818th Andriamanitra 🇫🇮 865 67 144ms 26 Apr 2023 819th MeWhenI 🇻🇦 865 81 8ms 23 May 2023 820th bac0id 865 90 336ms 26 Sep 2023 820th deadp4nda 🇩🇪 865 90 372ms 26 Apr 2024 820th 123mjb 865 90 352ms 23 Jun 2025 820th michelebastione 🇮🇹 865 90 384ms 24 Aug 2025 820th razvandmtr 🇷🇴 865 90 385ms 6 Nov 2025 825th shellbertt 🇨🇦 865 98 56ms 9 May 2022 First Prev 751–825 of 3,516 Next Last