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 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 Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers 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 ><> ALGOL 68 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 ArkScript 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 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 ArkScript 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 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 Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers 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 799th wh3n3v3r 🇨🇿 871 35 8ms 18 Nov 2024 802nd scpchicken 🇵🇼 871 45 358ms 4 May 2022 802nd SirBogman 🇺🇸 871 45 227ms 5 May 2022 804th TFeld00 🇩🇰 871 71 25ms 17 May 2022 804th DialFrost 🇸🇬 871 71 25ms 15 Nov 2022 804th StefanHabel 🇨🇦 871 71 19ms 29 Nov 2022 804th nstearns96 🇬🇧 871 71 21ms 11 Jan 2023 804th hallvabo 🇳🇴 871 71 19ms 7 Feb 2023 804th anter69 🇭🇺 871 71 18ms 21 May 2024 804th rucin93 🇵🇱 871 71 17ms 10 Jul 2024 804th lelbal 871 71 20ms 26 Aug 2025 804th HETHAT 🇩🇿 871 71 23ms 23 Sep 2025 804th 09cf 871 71 18ms 18 Nov 2025 804th CommandLeo 🇮🇹 871 71 23ms 8 Jan 2026 804th Flekay 🇩🇪 871 71 17ms 22 days ago 804th snoozingnewt 🇨🇦 871 71 18ms 22 days ago 804th JOrE20 871 71 16ms 10 days ago 818th Shanethegamer 🇺🇸 871 98 134ms 15 Apr 2025 818th GolfingSuccess 🇬🇷 871 98 109ms 28 Nov 2025 818th DialFrost 🇸🇬 871 98 118ms 1 Dec 2025 821st ovs-code 🇩🇪 871 133 42ms 8 Jul 2024 822nd emgordon154 870 160 1,606ms 24 Dec 2025 822nd DialFrost 🇸🇬 870 160 1,669ms 17 Jan 2026 824th Steffan153 🇫🇮 869 82 1,388ms 23 Feb 2023 825th 123mjb 869 96 366ms 20 Nov 2025 825th noescareno 869 96 366ms 21 Nov 2025 827th Frowny 868 38 40ms 5 May 2022 827th stackofbears 868 38 42ms 14 Mar 2025 829th steffan-polygolf 868 73 90ms 23 Feb 2023 829th MWI-polygolf 868 73 84ms 6 Dec 2023 829th HumanoidCPU 868 73 83ms 7 May 2024 832nd nwellnhof 🇩🇪 868 111 301ms 4 May 2022 832nd emplv 🇱🇻 868 111 294ms 5 May 2022 832nd Shanethegamer 🇺🇸 868 111 293ms 21 Nov 2023 835th pardouin 🇫🇷 867 61 145ms 7 Aug 2024 836th MeWhenI 🇻🇦 867 92 467ms 10 Oct 2022 836th Betuaredead 867 92 480ms 5 Jan 2023 836th Yax42 🇫🇷 867 92 470ms 4 Oct 2025 839th shellbertt 🇨🇦 867 98 58ms 9 May 2022 839th iakolzin 867 98 55ms 26 May 2022 839th Betuaredead 867 98 57ms 5 Jan 2023 839th oceko 867 98 59ms 19 Feb 2024 839th cuzdav 867 98 57ms 4 May 2025 839th timhaj 🇸🇮 867 98 56ms 12 Sep 2025 839th Yax42 🇫🇷 867 98 57ms 4 Oct 2025 846th bac0id 866 90 374ms 26 Sep 2023 846th deadp4nda 🇩🇪 866 90 390ms 26 Apr 2024 846th 123mjb 866 90 349ms 23 Jun 2025 846th michelebastione 🇮🇹 866 90 407ms 24 Aug 2025 846th razvandmtr 🇷🇴 866 90 403ms 6 Nov 2025 851st TylerBloom 866 96 158ms 22 Mar 2024 852nd 5quiwyrm 865 52 293ms 4 Sep 2022 852nd MeWhenI 🇻🇦 865 52 301ms 28 Jan 2023 852nd Feniske 🇫🇷 865 52 289ms 7 Nov 2023 852nd dcgjb 865 52 277ms 29 Jan 2024 852nd JPRuskin 🇬🇧 865 52 284ms 7 Apr 2025 852nd IISResetMe 865 52 309ms 7 Apr 2025 852nd Ripick 865 52 303ms 1 Jun 2025 859th Andriamanitra 🇫🇮 865 67 144ms 26 Apr 2023 860th MeWhenI 🇻🇦 865 81 8ms 23 May 2023 861st typeswitch-dev 🇵🇹 864 75 5ms 22 Jul 2023 862nd dokutan 864 79 10ms 27 Apr 2024 862nd SwordF-Official 🇺🇸 864 79 10ms 1 Feb 2026 864th ovs-code 🇩🇪 864 161 1,719ms 14 Sep 2025 864th Yewzir 🇧🇪 864 161 1,887ms 14 Nov 2025 866th HPWiz 🇳🇿 863 50 265ms 4 May 2022 866th JayXon 🇺🇸 863 50 250ms 5 May 2022 866th Steffan153 🇫🇮 863 50 256ms 10 Dec 2022 866th ovs-code 🇩🇪 863 50 403ms 24 Oct 2023 866th sean-niemann 🇺🇸 863 50 268ms 12 Jul 2024 871st Setvizan 863 62 10ms 12 Jan 2023 871st GreenBeansAgainstVeganism 863 62 11ms 13 Jan 2023 871st arctouch-cristiannevianna 863 62 10ms 3 Apr 2023 871st Corxldyphik 863 62 11ms 11 Apr 2023 871st Blockyheadman 863 62 10ms 1 Nov 2023 871st ollyspooner 863 62 10ms 22 Nov 2023 871st itserasmus 863 62 10ms 25 Jan 2024 871st Jacob385 863 62 11ms 13 Mar 2024 871st junkondo-jp 863 62 10ms 30 Jun 2024 871st ShiraJoseph 🇺🇸 863 62 10ms 1 Mar 2025 First Prev 801–880 of 3,615 Next Last