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 795th ListeriaM 874 72 2ms 22 Aug 2023 795th JohandeRuiter 🇳🇱 874 72 3ms 14 Sep 2024 795th larcherMTT 874 72 2ms 5 Oct 2024 795th snyderek 🇺🇸 874 72 2ms 19 Feb 2025 795th 5quiwyrm 874 72 2ms 29 Jun 2025 795th TeodorDyakov 🇧🇬 874 72 3ms 8 Jul 2025 795th xiaoyiming123 874 72 2ms 12 Jul 2025 808th Shanethegamer 🇺🇸 874 85 38ms 15 May 2023 808th albanian-laundromat 🇺🇸 874 85 40ms 25 Aug 2025 810th Andriamanitra 🇫🇮 873 54 42ms 21 Jul 2022 810th jared-hughes 873 54 39ms 12 Sep 2022 810th OhmNomNom 873 54 41ms 7 Oct 2022 810th olleicua 🇺🇸 873 54 44ms 21 Jan 2024 810th LostSyntax21 🇬🇧 873 54 41ms 12 Mar 2025 810th AbrahamJLR 🇻🇪 873 54 40ms 4 Jun 2025 810th vishal-mohanty 873 54 39ms 25 Aug 2025 810th madex 🇩🇪 873 54 44ms 13 days ago 818th DialFrost 🇸🇬 873 64 5ms 10 Jul 2024 819th dieggsy 873 97 31ms 8 Oct 2024 820th ovs-code 🇩🇪 873 133 42ms 8 Jul 2024 821st scpchicken 🇵🇼 872 45 406ms 4 May 2022 821st SirBogman 🇺🇸 872 45 274ms 5 May 2022 823rd ulucs 871 35 9ms 8 May 2022 823rd bstrat 871 35 9ms 6 Jun 2024 823rd wh3n3v3r 🇨🇿 871 35 8ms 18 Nov 2024 826th TFeld00 🇩🇰 871 71 25ms 17 May 2022 826th DialFrost 🇸🇬 871 71 26ms 15 Nov 2022 826th StefanHabel 🇨🇦 871 71 20ms 29 Nov 2022 826th nstearns96 🇬🇧 871 71 25ms 11 Jan 2023 826th hallvabo 🇳🇴 871 71 20ms 7 Feb 2023 826th anter69 🇭🇺 871 71 18ms 21 May 2024 826th rucin93 🇵🇱 871 71 19ms 10 Jul 2024 826th lelbal 871 71 20ms 26 Aug 2025 826th HETHAT 🇩🇿 871 71 23ms 23 Sep 2025 826th 09cf 871 71 17ms 18 Nov 2025 826th CommandLeo 🇮🇹 871 71 26ms 8 Jan 2026 826th Flekay 🇩🇪 871 71 20ms 12 Feb 2026 826th snoozingnewt 🇨🇦 871 71 20ms 13 Feb 2026 826th JOrE20 871 71 16ms 25 Feb 2026 826th flekAI 871 71 17ms 5 days ago 826th scpchicken 🇵🇼 871 71 17ms 4 days ago 842nd Frowny 869 38 40ms 5 May 2022 842nd stackofbears 869 38 42ms 14 Mar 2025 844th steffan-polygolf 869 73 97ms 23 Feb 2023 844th MWI-polygolf 869 73 93ms 6 Dec 2023 844th HumanoidCPU 869 73 95ms 7 May 2024 847th MeWhenI 🇻🇦 869 92 467ms 10 Oct 2022 847th Betuaredead 869 92 480ms 5 Jan 2023 847th Yax42 🇫🇷 869 92 459ms 4 Oct 2025 850th 123mjb 869 96 366ms 20 Nov 2025 850th noescareno 869 96 366ms 21 Nov 2025 852nd nwellnhof 🇩🇪 869 111 308ms 4 May 2022 852nd emplv 🇱🇻 869 111 348ms 5 May 2022 852nd Shanethegamer 🇺🇸 869 111 309ms 21 Nov 2023 855th pardouin 🇫🇷 868 61 145ms 7 Aug 2024 856th JayXon 🇺🇸 868 158 1,799ms 14 Sep 2025 857th TylerBloom 867 96 133ms 22 Mar 2024 858th shellbertt 🇨🇦 867 98 63ms 9 May 2022 858th iakolzin 867 98 57ms 26 May 2022 858th Betuaredead 867 98 60ms 5 Jan 2023 858th oceko 867 98 74ms 19 Feb 2024 858th cuzdav 867 98 63ms 4 May 2025 858th timhaj 🇸🇮 867 98 65ms 12 Sep 2025 858th Yax42 🇫🇷 867 98 54ms 4 Oct 2025 858th liamjermy6 867 98 61ms 16 days ago 866th 5quiwyrm 866 52 262ms 4 Sep 2022 866th MeWhenI 🇻🇦 866 52 278ms 28 Jan 2023 866th Feniske 🇫🇷 866 52 301ms 7 Nov 2023 866th dcgjb 866 52 278ms 29 Jan 2024 866th JPRuskin 🇬🇧 866 52 314ms 7 Apr 2025 866th IISResetMe 866 52 327ms 7 Apr 2025 866th Ripick 866 52 281ms 1 Jun 2025 866th madex 🇩🇪 866 52 300ms 16 Mar 2026 874th Andriamanitra 🇫🇮 866 67 144ms 26 Apr 2023 875th typeswitch-dev 🇵🇹 866 75 4ms 22 Jul 2023 876th DialFrost 🇸🇬 866 84 17ms 1 Jan 2026 877th bac0id 866 90 399ms 26 Sep 2023 877th deadp4nda 🇩🇪 866 90 415ms 26 Apr 2024 877th 123mjb 866 90 409ms 23 Jun 2025 877th michelebastione 🇮🇹 866 90 435ms 24 Aug 2025 First Prev 801–880 of 3,789 Next Last