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 550th cros107 900 74 11 Aug 2023 550th yourlefthandman 900 74 16 Aug 2023 550th daisyyedda 900 74 17 Aug 2023 550th cesarm4 900 74 29 Aug 2023 550th midnattssol 🇸🇪 900 74 22 Sep 2023 550th snoozingnewt 🇺🇸 900 74 23 Sep 2023 550th lambda-abstraction 900 74 21 Oct 2023 550th levavft 900 74 26 Oct 2023 550th Buecherfresser 900 74 22 Nov 2023 550th anarconic 900 74 8 Dec 2023 550th AntoineBlondon 900 74 11 Dec 2023 550th kurkale6ka 900 74 20 Dec 2023 550th Dataen 900 74 10 Jan 2024 550th Anonymousellama21 900 74 14 Mar 2024 550th Bmrl7 900 74 23 Mar 2024 550th cefqrn 900 74 26 May 2024 550th drochom 900 74 18 Jun 2024 550th hiichbindermax 900 74 22 Jun 2024 550th wuzekai518 900 74 9 Jul 2024 550th madex 🇩🇪 900 74 9 Jul 2024 550th cykim8811 900 74 11 Jul 2024 550th imelxr 🇮🇱 900 74 17 Aug 2024 550th EnTerr 900 74 25 Aug 2024 550th Mabeloid 🇳🇴 900 74 1 Sep 2024 550th madeforlosers 900 74 5 Sep 2024 550th LostSyntax21 🇬🇧 900 74 10 Sep 2024 550th Deedogg 900 74 11 Sep 2024 550th MassimoParisi 900 74 18 Sep 2024 550th cdesodt 900 74 10 Oct 2024 550th lifthrasiir 🇰🇷 900 74 13 Nov 2024 550th agreegious 900 74 17 Nov 2024 550th Stockoh 🇫🇷 900 74 17 Nov 2024 550th Andrey135296 900 74 24 Nov 2024 550th TralfamadorianComedian 900 74 6 Dec 2024 550th bltnppcnt 900 74 3 Jan 2025 550th ZorblaxV 900 74 12 Jan 2025 550th yokasuretsu 900 74 13 Jan 2025 550th Artemis21 🇬🇧 900 74 17 Jan 2025 550th gdpr777 900 74 10 Feb 2025 550th Pyroan 900 74 27 Mar 2025 550th FEZfan 🇦🇺 900 74 19 Apr 2025 550th Squimbletin 900 74 19 Apr 2025 550th Kowalskiexe 🇵🇱 900 74 19 Apr 2025 550th Dandandooo 900 74 23 Apr 2025 550th khangtm123 900 74 4 May 2025 550th 40fied4t 900 74 6 May 2025 550th keelimeguy 🇺🇸 900 74 26 days ago 550th TheZwierzLF 🇵🇱 900 74 18 days ago 550th kbeat 🇰🇿 900 74 18 days ago 550th LvLError 900 74 10 days ago 550th Lv0Sys 🇵🇱 900 74 9 days ago 550th ffelixm 900 74 5 days ago 653rd edsrzf 🇳🇿 900 83 14 Jan 2025 653rd kg583 🇺🇸 900 83 14 Feb 2025 655th SirBogman 🇺🇸 899 50 5 May 2022 655th nwellnhof 🇩🇪 899 50 3 Jun 2022 655th Lydxn 🇨🇦 899 50 15 Aug 2022 655th Steffan153 🇫🇮 899 50 9 Aug 2024 659th Steffan153 🇫🇮 899 82 1 Apr 2023 659th sean-niemann 🇺🇸 899 82 12 Jul 2024 661st DialFrost 🇸🇬 897 29 15 Mar 2025 662nd Lydxn 🇨🇦 897 48 5 May 2022 662nd pabloferz 897 48 6 Mar 2024 664th GrayJoKing 🇦🇺 897 70 6 May 2022 664th saito-ta 🇯🇵 897 70 21 Dec 2023 664th ovs-code 🇩🇪 897 70 17 Feb 2024 667th MichalMarsalek 🇨🇿 897 87 5 May 2022 667th Kloppermand 🇩🇰 897 87 7 Oct 2022 669th nwellnhof 🇩🇪 897 111 4 May 2022 669th emplv 🇱🇻 897 111 5 May 2022 669th Shanethegamer 🇺🇸 897 111 21 Nov 2023 672nd Steffan153 🇫🇮 896 59 10 Aug 2024 672nd rucin93 🇵🇱 896 59 13 Oct 2024 672nd sean-niemann 🇺🇸 896 59 13 Oct 2024 672nd lukegustafson 🇺🇸 896 59 24 Oct 2024 Prev 601–675 of 3,081 Next
