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 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 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 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 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 Trinomial Triangle Turtle Tutorial # Golfer Points Bytes Time 613th Anonymousellama21 901 74 14 Mar 2024 613th Bmrl7 901 74 23 Mar 2024 613th cefqrn 901 74 26 May 2024 613th drochom 901 74 18 Jun 2024 613th hiichbindermax 901 74 22 Jun 2024 613th wuzekai518 901 74 9 Jul 2024 613th madex 🇩🇪 901 74 9 Jul 2024 613th cykim8811 901 74 11 Jul 2024 613th imelxr 🇮🇱 901 74 17 Aug 2024 613th EnTerr 901 74 25 Aug 2024 613th Mabeloid 🇳🇴 901 74 1 Sep 2024 613th madeforlosers 901 74 5 Sep 2024 613th LostSyntax21 🇬🇧 901 74 10 Sep 2024 613th Deedogg 901 74 11 Sep 2024 613th MassimoParisi 901 74 18 Sep 2024 613th FortuiteMan 🇫🇷 901 74 10 Oct 2024 613th lifthrasiir 🇰🇷 901 74 13 Nov 2024 613th agreegious 901 74 17 Nov 2024 613th Stockoh 🇫🇷 901 74 17 Nov 2024 613th Andrey135296 901 74 24 Nov 2024 613th TralfamadorianComedian 901 74 6 Dec 2024 613th bltnppcnt 901 74 3 Jan 2025 613th ZorblaxV 901 74 12 Jan 2025 613th yokasuretsu 901 74 13 Jan 2025 613th Artemis21 🇬🇧 901 74 17 Jan 2025 613th gdpr777 901 74 10 Feb 2025 613th Pyroan 901 74 27 Mar 2025 613th Squimbletin 901 74 19 Apr 2025 613th Kowalskiexe 🇵🇱 901 74 19 Apr 2025 613th Dandandooo 901 74 23 Apr 2025 613th khangtm123 901 74 4 May 2025 613th 40fied4t 901 74 6 May 2025 613th keelimeguy 🇺🇸 901 74 13 May 2025 613th TheZwierzLF 🇵🇱 901 74 21 May 2025 613th kbeat 🇰🇿 901 74 21 May 2025 613th LvLError 901 74 29 May 2025 613th Lv0Sys 🇵🇱 901 74 30 May 2025 613th ffelixm 901 74 3 Jun 2025 613th Flekay 🇩🇪 901 74 19 Jun 2025 613th DoubleUynn 901 74 25 Jun 2025 613th osNiko 🇧🇷 901 74 26 Jul 2025 613th wobblybits 901 74 13 Aug 2025 613th denisfouchard 901 74 23 Aug 2025 613th Emutis 🇱🇹 901 74 23 Aug 2025 613th blaztoma 🇱🇹 901 74 24 Aug 2025 613th jatax-ikea 901 74 13 days ago 613th edsrzf 🇳🇿 901 74 12 days ago 613th 1024An 🇮🇳 901 74 11 days ago 724th SirBogman 🇺🇸 899 50 5 May 2022 724th nwellnhof 🇩🇪 899 50 3 Jun 2022 724th Lydxn 🇨🇦 899 50 15 Aug 2022 724th Steffan153 🇫🇮 899 50 9 Aug 2024 728th DialFrost 🇸🇬 899 69 15 Jul 2024 729th nwellnhof 🇩🇪 899 111 4 May 2022 729th emplv 🇱🇻 899 111 5 May 2022 729th Shanethegamer 🇺🇸 899 111 21 Nov 2023 732nd GrayJoKing 🇦🇺 898 70 6 May 2022 732nd saito-ta 🇯🇵 898 70 21 Dec 2023 732nd ovs-code 🇩🇪 898 70 17 Feb 2024 732nd trinityy-7 898 70 7 Aug 2025 732nd KasperKivimaeki 🇫🇮 898 70 8 Aug 2025 737th Lydxn 🇨🇦 898 72 16 Jul 2023 738th DialFrost 🇸🇬 897 29 15 Mar 2025 739th Lydxn 🇨🇦 897 48 5 May 2022 739th pabloferz 897 48 6 Mar 2024 741st Steffan153 🇫🇮 896 59 10 Aug 2024 741st rucin93 🇵🇱 896 59 13 Oct 2024 741st sean-niemann 🇺🇸 896 59 13 Oct 2024 741st lukegustafson 🇺🇸 896 59 24 Oct 2024 745th Ripick 896 73 8 May 2023 746th edsrzf 🇳🇿 896 78 26 Oct 2024 747th GrayJoKing 🇦🇺 896 91 19 Jan 2023 748th SiestaGuru 896 131 9 Jan 2023 748th HumanoidCPU 896 131 7 May 2024 750th MichalMarsalek 🇨🇿 895 87 5 May 2022 Prev 676–750 of 3,327 Next
