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 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 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 Topological Sort Transpose Sentence Trinomial Triangle 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 Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers 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 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala 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 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 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 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 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 Topological Sort Transpose Sentence Trinomial Triangle 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 Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial # Golfer Points Bytes Time 447th marcin7Cd 913 73 27 Jun 2022 447th tri1212 🇻🇳 913 73 18 Jul 2022 447th vhoulbreque 🇫🇷 913 73 18 Aug 2022 447th KatieLG 🇬🇧 913 73 29 Aug 2022 447th tkr-sh 🇫🇷 913 73 8 Sep 2022 447th jroscoe5 913 73 15 Sep 2022 447th fredrik-bakke 🇳🇴 913 73 18 Sep 2022 447th firegene 🇮🇪 913 73 27 Sep 2022 447th OhmNomNom 913 73 7 Oct 2022 447th 0-4849 913 73 1 Nov 2022 447th M0PKOBKA 913 73 19 Dec 2022 447th calumacutt 913 73 19 Dec 2022 447th thehylian 913 73 2 Jan 2023 447th fynnkroeger 913 73 6 Jan 2023 447th shellbertt 🇨🇦 913 73 13 Jan 2023 447th hunt-g 913 73 4 Feb 2023 447th ljweel 913 73 13 Feb 2023 447th jmerle 🇳🇱 913 73 16 Feb 2023 447th TaserTheFox 🇺🇸 913 73 14 Mar 2023 447th pinguicula 913 73 6 Apr 2023 447th TheoKeller1 913 73 11 Jun 2023 447th fkantelberg 913 73 16 Jul 2023 447th Mikey-Beep 🇬🇧 913 73 31 Aug 2023 447th eiburns 913 73 9 Oct 2023 447th htareque 913 73 13 Oct 2023 447th wearsunscreen 913 73 18 Oct 2023 447th bzijlema 🇳🇱 913 73 25 Oct 2023 447th Grrisly 913 73 10 Nov 2023 447th m42km 913 73 11 Nov 2023 447th GeneralPoxter 913 73 7 Dec 2023 447th logvp 913 73 12 Jan 2024 447th JoaoFelipe3 913 73 13 Jan 2024 447th ehulinsky 🇺🇸 913 73 16 Feb 2024 447th Lewenhaupt 913 73 23 Feb 2024 447th Yewzir 🇧🇪 913 73 5 Apr 2024 447th stertooy 🇧🇪 913 73 9 Jun 2024 447th cuboids 913 73 11 Jul 2024 447th jipsong 🇩🇪 913 73 23 Jul 2024 447th mattyhempstead 913 73 6 Oct 2024 447th wh3n3v3r 🇨🇿 913 73 18 Nov 2024 447th klixel 🇨🇦 913 73 18 Nov 2024 447th tjwrenn 913 73 10 Dec 2024 447th nullie 913 73 19 Dec 2024 447th ryyyn 🇺🇸 913 73 7 Jan 2025 447th maxgodfrey2004 🇨🇦 913 73 13 Feb 2025 447th lolgeny 913 73 22 Feb 2025 447th andrewjc2000 913 73 23 Feb 2025 447th Languag3 913 73 27 Feb 2025 447th Bulmenisaurus 913 73 2 Mar 2025 447th souta-1326 913 73 1 Apr 2025 447th BenjaminHGong 913 73 26 May 2025 447th FEZfan 🇦🇺 913 73 11 Jul 2025 447th wuduculfre 913 73 28 Jul 2025 447th BREMAUCY 🇫🇷 913 73 24 Aug 2025 447th FortuiteMan 🇫🇷 913 73 10 days ago 447th miaoaixuan 913 73 8 days ago 507th andersk 🇺🇸 913 91 25 Oct 2022 507th Super-Pizza 🇨🇦 913 91 4 Dec 2022 507th klixel 🇨🇦 913 91 20 May 2023 507th lynn 913 91 6 Jul 2024 507th edsrzf 🇳🇿 913 91 29 Nov 2024 507th DialFrost 🇸🇬 913 91 7 Apr 2025 513th lynn 912 78 5 May 2022 514th nai62 911 69 27 Aug 2022 515th GrayJoKing 🇦🇺 911 71 10 Aug 2023 516th tailorspy 911 93 27 May 2024 516th sean-niemann 🇺🇸 911 93 9 Jun 2025 518th GolfingSuccess 🇬🇷 910 64 14 Dec 2024 518th MeWhenI 🇻🇦 910 64 24 Dec 2024 520th MeWhenI 🇻🇦 909 63 5 May 2022 521st Shanethegamer 🇺🇸 909 77 15 May 2023 522nd marshallward 🇺🇸 909 83 10 May 2022 523rd primo-ppcg 🇹🇭 909 93 7 May 2022 523rd AlephSquirrel 909 93 21 Jan 2023 523rd kg583 🇺🇸 909 93 26 Dec 2024 First Prev 451–525 of 3,389 Next Last
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