Collatz in all languages in bytes. Cheevos Holes Recent Holes Langs Medals Misc 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 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 Maze Medal Tally 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 Transpose Sentence United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Hilbert Curve Mandelbrot Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir F# Factor Forth Fortran Gleam Go GolfScript 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 Erlang Fennel Groovy Harbour Hare Haxe Hush Hy iogii Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 F# Factor Forth Fortran Gleam Go GolfScript 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 Erlang Fennel Groovy Harbour Hare Haxe Hush Hy iogii Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 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 Maze Medal Tally 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 Transpose Sentence United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Hilbert Curve Mandelbrot Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Bytes Time 548th daisyyedda 900 74 17 Aug 2023 548th cesarm4 900 74 29 Aug 2023 548th midnattssol 🇸🇪 900 74 22 Sep 2023 548th snoozingnewt 🇺🇸 900 74 23 Sep 2023 548th lambda-abstraction 900 74 21 Oct 2023 548th levavft 900 74 26 Oct 2023 548th Buecherfresser 900 74 22 Nov 2023 548th anarconic 900 74 8 Dec 2023 548th AntoineBlondon 900 74 11 Dec 2023 548th kurkale6ka 900 74 20 Dec 2023 548th Dataen 900 74 10 Jan 2024 548th Anonymousellama21 900 74 14 Mar 2024 548th Bmrl7 900 74 23 Mar 2024 548th cefqrn 900 74 26 May 2024 548th drochom 900 74 18 Jun 2024 548th hiichbindermax 900 74 22 Jun 2024 548th wuzekai518 900 74 9 Jul 2024 548th madex 🇩🇪 900 74 9 Jul 2024 548th cykim8811 900 74 11 Jul 2024 548th imelxr 🇮🇱 900 74 17 Aug 2024 548th EnTerr 900 74 25 Aug 2024 548th Mabeloid 🇳🇴 900 74 1 Sep 2024 548th madeforlosers 900 74 5 Sep 2024 548th LostSyntax21 🇬🇧 900 74 10 Sep 2024 548th Deedogg 900 74 11 Sep 2024 548th MassimoParisi 900 74 18 Sep 2024 548th cdesodt 900 74 10 Oct 2024 548th lifthrasiir 🇰🇷 900 74 13 Nov 2024 548th agreegious 900 74 17 Nov 2024 548th Stockoh 🇫🇷 900 74 17 Nov 2024 548th Andrey135296 900 74 24 Nov 2024 548th TralfamadorianComedian 900 74 6 Dec 2024 548th bltnppcnt 900 74 3 Jan 2025 548th ZorblaxV 900 74 12 Jan 2025 548th yokasuretsu 900 74 13 Jan 2025 548th Artemis21 🇬🇧 900 74 17 Jan 2025 548th gdpr777 900 74 10 Feb 2025 548th Pyroan 900 74 27 Mar 2025 548th FEZfan 🇦🇺 900 74 19 Apr 2025 548th Squimbletin 900 74 19 Apr 2025 548th Kowalskiexe 🇵🇱 900 74 19 Apr 2025 548th Dandandooo 900 74 23 Apr 2025 548th khangtm123 900 74 4 May 2025 548th 40fied4t 900 74 6 May 2025 548th keelimeguy 🇺🇸 900 74 26 days ago 548th TheZwierzLF 🇵🇱 900 74 18 days ago 548th kbeat 🇰🇿 900 74 18 days ago 548th LvLError 900 74 10 days ago 548th Lv0Sys 🇵🇱 900 74 9 days ago 548th ffelixm 900 74 5 days ago 651st edsrzf 🇳🇿 900 83 14 Jan 2025 651st kg583 🇺🇸 900 83 14 Feb 2025 653rd SirBogman 🇺🇸 899 50 5 May 2022 653rd nwellnhof 🇩🇪 899 50 3 Jun 2022 653rd Lydxn 🇨🇦 899 50 15 Aug 2022 653rd Steffan153 🇫🇮 899 50 9 Aug 2024 653rd DialFrost 🇸🇬 899 50 7 Apr 2025 658th Steffan153 🇫🇮 899 82 1 Apr 2023 658th sean-niemann 🇺🇸 899 82 12 Jul 2024 660th DialFrost 🇸🇬 897 29 15 Mar 2025 661st Lydxn 🇨🇦 897 48 5 May 2022 661st pabloferz 897 48 6 Mar 2024 663rd GrayJoKing 🇦🇺 897 70 6 May 2022 663rd saito-ta 🇯🇵 897 70 21 Dec 2023 663rd ovs-code 🇩🇪 897 70 17 Feb 2024 666th MichalMarsalek 🇨🇿 897 87 5 May 2022 666th Kloppermand 🇩🇰 897 87 7 Oct 2022 668th nwellnhof 🇩🇪 897 111 4 May 2022 668th emplv 🇱🇻 897 111 5 May 2022 668th Shanethegamer 🇺🇸 897 111 21 Nov 2023 671st Steffan153 🇫🇮 896 59 10 Aug 2024 671st rucin93 🇵🇱 896 59 13 Oct 2024 671st sean-niemann 🇺🇸 896 59 13 Oct 2024 671st lukegustafson 🇺🇸 896 59 24 Oct 2024 675th DialFrost 🇸🇬 895 69 15 Jul 2024 Prev 601–675 of 3,081 Next
