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 541st anarconic 900 74 8 Dec 2023 541st AntoineBlondon 900 74 11 Dec 2023 541st kurkale6ka 900 74 20 Dec 2023 541st Dataen 900 74 10 Jan 2024 541st Anonymousellama21 900 74 14 Mar 2024 541st Bmrl7 900 74 23 Mar 2024 541st cefqrn 900 74 26 May 2024 541st drochom 900 74 18 Jun 2024 541st hiichbindermax 900 74 22 Jun 2024 541st wuzekai518 900 74 9 Jul 2024 541st madex 🇩🇪 900 74 9 Jul 2024 541st cykim8811 900 74 11 Jul 2024 541st imelxr 🇮🇱 900 74 17 Aug 2024 541st EnTerr 900 74 25 Aug 2024 541st Mabeloid 🇳🇴 900 74 1 Sep 2024 541st madeforlosers 900 74 5 Sep 2024 541st LostSyntax21 🇬🇧 900 74 10 Sep 2024 541st Deedogg 900 74 11 Sep 2024 541st MassimoParisi 900 74 18 Sep 2024 541st cdesodt 900 74 10 Oct 2024 541st lifthrasiir 🇰🇷 900 74 13 Nov 2024 541st agreegious 900 74 17 Nov 2024 541st Stockoh 🇫🇷 900 74 17 Nov 2024 541st Andrey135296 900 74 24 Nov 2024 541st TralfamadorianComedian 900 74 6 Dec 2024 541st bltnppcnt 900 74 3 Jan 2025 541st ZorblaxV 900 74 12 Jan 2025 541st yokasuretsu 900 74 13 Jan 2025 541st Artemis21 🇬🇧 900 74 17 Jan 2025 541st gdpr777 900 74 10 Feb 2025 541st Pyroan 900 74 27 Mar 2025 541st FEZfan 🇦🇺 900 74 19 Apr 2025 541st Squimbletin 900 74 19 Apr 2025 541st Kowalskiexe 🇵🇱 900 74 19 Apr 2025 541st Dandandooo 900 74 23 Apr 2025 541st khangtm123 900 74 4 May 2025 541st 40fied4t 900 74 6 May 2025 541st keelimeguy 🇺🇸 900 74 22 days ago 541st TheZwierzLF 🇵🇱 900 74 14 days ago 541st kbeat 🇰🇿 900 74 14 days ago 541st LvLError 900 74 6 days ago 541st Lv0Sys 🇵🇱 900 74 6 days ago 541st ffelixm 900 74 37 hours ago 644th edsrzf 🇳🇿 900 83 14 Jan 2025 644th kg583 🇺🇸 900 83 14 Feb 2025 646th SirBogman 🇺🇸 899 50 5 May 2022 646th nwellnhof 🇩🇪 899 50 3 Jun 2022 646th Lydxn 🇨🇦 899 50 15 Aug 2022 646th bitsandbeyond 🇳🇱 899 50 9 Aug 2024 646th Steffan153 🇫🇮 899 50 9 Aug 2024 646th DialFrost 🇸🇬 899 50 7 Apr 2025 652nd Lydxn 🇨🇦 899 69 12 Sep 2022 652nd GrayJoKing 🇦🇺 899 69 12 Sep 2022 652nd btnlq 899 69 24 Sep 2022 655th Steffan153 🇫🇮 899 82 1 Apr 2023 655th sean-niemann 🇺🇸 899 82 12 Jul 2024 657th DialFrost 🇸🇬 897 29 15 Mar 2025 658th Lydxn 🇨🇦 897 48 5 May 2022 658th pabloferz 897 48 6 Mar 2024 660th GrayJoKing 🇦🇺 897 70 6 May 2022 660th saito-ta 🇯🇵 897 70 21 Dec 2023 660th ovs-code 🇩🇪 897 70 17 Feb 2024 663rd MichalMarsalek 🇨🇿 897 87 5 May 2022 663rd Kloppermand 🇩🇰 897 87 7 Oct 2022 665th nwellnhof 🇩🇪 897 111 4 May 2022 665th emplv 🇱🇻 897 111 5 May 2022 665th Shanethegamer 🇺🇸 897 111 21 Nov 2023 668th Steffan153 🇫🇮 896 59 10 Aug 2024 668th rucin93 🇵🇱 896 59 13 Oct 2024 668th sean-niemann 🇺🇸 896 59 13 Oct 2024 668th lukegustafson 🇺🇸 896 59 24 Oct 2024 672nd DialFrost 🇸🇬 895 69 15 Jul 2024 673rd edsrzf 🇳🇿 895 78 26 Oct 2024 674th SiestaGuru 895 131 9 Jan 2023 674th HumanoidCPU 895 131 7 May 2024 Prev 601–675 of 3,078 Next
