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 394th Shanethegamer 🇺🇸 907 59 15ms 25 May 2023 394th Maznek 907 59 11ms 26 Jun 2023 394th SpiritAxolotl 🇺🇸 907 59 14ms 20 Mar 2024 394th Andrey-Plotnikov 907 59 13ms 19 May 2024 394th emgordon154 907 59 10ms 5 Aug 2024 394th duckyluuk 🇳🇱 907 59 12ms 3 Oct 2024 394th lifthrasiir 🇰🇷 907 59 14ms 23 Nov 2024 394th fuzzylojik-golf 🇺🇸 907 59 12ms 1 Jun 2025 394th acollett89 907 59 11ms 17 Jun 2025 394th iczelia 🇩🇪 907 59 12ms 23 Sep 2025 394th Yax42 🇫🇷 907 59 10ms 20 Jan 2026 394th Protothor 907 59 12ms 21 days ago 413th krcs 🇵🇱 907 86 397ms 10 May 2022 413th billings7 🇬🇧 907 86 407ms 15 May 2022 413th revlayle 🇺🇸 907 86 440ms 7 Dec 2022 413th Widgitty 907 86 429ms 1 Sep 2023 413th albanian-laundromat 🇺🇸 907 86 455ms 30 Sep 2025 418th piano-miles 907 92 411ms 24 Feb 2026 419th shinh 906 52 42ms 29 Jun 2022 420th Lydxn 🇨🇦 906 64 181ms 1 Apr 2023 421st Lydxn 🇨🇦 906 70 106ms 7 May 2022 422nd MeWhenI 🇻🇦 906 71 139ms 20 Aug 2024 423rd m-tkach 🇺🇦 906 72 114ms 16 Oct 2022 423rd GrayJoKing 🇦🇺 906 72 112ms 22 Oct 2022 423rd emplv 🇱🇻 906 72 111ms 27 Oct 2022 423rd sean-niemann 🇺🇸 906 72 126ms 7 Mar 2025 427th DialFrost 🇸🇬 906 74 17ms 22 Feb 2026 427th Steffan153 🇫🇮 906 74 22ms 22 Feb 2026 427th GrayJoKing 🇦🇺 906 74 16ms 22 Feb 2026 427th GolfingSuccess 🇬🇷 906 74 18ms 24 Feb 2026 427th snoozingnewt 🇨🇦 906 74 18ms 4 Mar 2026 427th edsrzf 🇳🇿 906 74 16ms 9 Mar 2026 433rd Steffan153 🇫🇮 906 82 42ms 1 Apr 2023 433rd sean-niemann 🇺🇸 906 82 42ms 12 Jul 2024 435th stefangimmillaro 905 92 132ms 24 Oct 2023 435th inverseLorentz 🇦🇺 905 92 133ms 27 May 2024 435th sean-niemann 🇺🇸 905 92 140ms 8 Jun 2025 435th ian-h-chamberlain 🇺🇸 905 92 136ms 23 Nov 2025 439th michael-pruglo 🇺🇦 904 94 58ms 5 Jul 2022 439th zygoloid 904 94 59ms 5 Aug 2024 439th AdrienHache 🇫🇷 904 94 57ms 27 Dec 2025 442nd Lydxn 🇨🇦 903 69 6ms 12 Sep 2022 442nd GrayJoKing 🇦🇺 903 69 7ms 12 Sep 2022 442nd btnlq 903 69 7ms 24 Sep 2022 445th Steffan153 🇫🇮 902 67 110ms 18 Dec 2022 445th Lydxn 🇨🇦 902 67 118ms 4 Feb 2023 445th sean-niemann 🇺🇸 902 67 110ms 7 Mar 2025 448th Lydxn 🇨🇦 902 72 353ms 16 Jul 2023 449th albanian-laundromat 🇺🇸 902 107 329ms 22 Dec 2025 450th SirBogman 🇺🇸 901 50 406ms 5 May 2022 450th nwellnhof 🇩🇪 901 50 405ms 3 Jun 2022 450th Lydxn 🇨🇦 901 50 484ms 15 Aug 2022 450th Steffan153 🇫🇮 901 50 555ms 9 Aug 2024 454th Shanethegamer 🇺🇸 901 83 1,459ms 4 May 2022 455th GrayJoKing 🇦🇺 900 91 30ms 19 Jan 2023 456th m-tkach 🇺🇦 900 117 25ms 7 May 2022 456th Lydxn 🇨🇦 900 117 26ms 7 May 2022 458th Lydxn 🇨🇦 899 48 273ms 5 May 2022 458th p-zubieta 899 48 295ms 6 Mar 2024 460th GrayJoKing 🇦🇺 899 70 2ms 6 May 2022 460th saito-ta 🇯🇵 899 70 2ms 21 Dec 2023 460th ovs-code 🇩🇪 899 70 2ms 17 Feb 2024 460th trinityy-7 899 70 2ms 7 Aug 2025 460th KasperKivimaeki 🇫🇮 899 70 6ms 8 Aug 2025 465th Ripick 899 73 122ms 8 May 2023 466th NickTheEASDude 🇺🇸 899 76 6ms 7 May 2024 466th edsrzf 🇳🇿 899 76 6ms 23 Dec 2025 466th Shanethegamer 🇺🇸 899 76 5ms 23 Dec 2025 466th jared-hughes 899 76 5ms 24 Dec 2025 466th Waffle3z 899 76 5ms 26 Dec 2025 466th Blendi-Goose 899 76 5ms 6 Feb 2026 466th kTheLemon 899 76 5ms 7 Mar 2026 473rd edsrzf 🇳🇿 899 78 12ms 26 Oct 2024 474th Steffan153 🇫🇮 898 59 138ms 10 Aug 2024 474th rucin93 🇵🇱 898 59 145ms 13 Oct 2024 474th sean-niemann 🇺🇸 898 59 144ms 13 Oct 2024 474th lukegustafson 🇺🇸 898 59 171ms 24 Oct 2024 478th JayXon 🇺🇸 898 74 2,363ms 14 Nov 2024 479th error256 898 81 18ms 19 Mar 2026 480th ovs-code 🇩🇪 898 89 458ms 24 Jul 2024 First Prev 401–480 of 3,788 Next Last