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 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 QR Encoder Quadratic Formula Scrambled Alphabetization 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 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 QR Encoder Quadratic Formula Scrambled Alphabetization Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Bytes Time 536th Bmrl7 900 74 23 Mar 2024 536th cefqrn 900 74 26 May 2024 536th drochom 900 74 18 Jun 2024 536th hiichbindermax 900 74 22 Jun 2024 536th wuzekai518 900 74 9 Jul 2024 536th madex 🇩🇪 900 74 9 Jul 2024 536th cykim8811 900 74 11 Jul 2024 536th imelxr 🇮🇱 900 74 17 Aug 2024 536th EnTerr 900 74 25 Aug 2024 536th Mabeloid 🇳🇴 900 74 1 Sep 2024 536th madeforlosers 900 74 5 Sep 2024 536th LostSyntax21 🇬🇧 900 74 10 Sep 2024 536th Deedogg 900 74 11 Sep 2024 536th MassimoParisi 900 74 18 Sep 2024 536th cdesodt 900 74 10 Oct 2024 536th lifthrasiir 🇰🇷 900 74 13 Nov 2024 536th agreegious 900 74 17 Nov 2024 536th Stockoh 🇫🇷 900 74 17 Nov 2024 536th Andrey135296 900 74 24 Nov 2024 536th TralfamadorianComedian 900 74 6 Dec 2024 536th bltnppcnt 900 74 3 Jan 2025 536th ZorblaxV 900 74 12 Jan 2025 536th yokasuretsu 900 74 13 Jan 2025 536th Artemis21 🇬🇧 900 74 17 Jan 2025 536th gdpr777 900 74 10 Feb 2025 536th Pyroan 900 74 27 Mar 2025 536th FEZfan 🇦🇺 900 74 19 Apr 2025 536th Squimbletin 900 74 19 Apr 2025 536th Kowalskiexe 🇵🇱 900 74 19 Apr 2025 536th Dandandooo 900 74 23 Apr 2025 536th khangtm123 900 74 26 days ago 536th 40fied4t 900 74 24 days ago 536th keelimeguy 🇺🇸 900 74 17 days ago 536th TheZwierzLF 🇵🇱 900 74 9 days ago 536th kbeat 🇰🇿 900 74 9 days ago 536th LvLError 900 74 31 hours ago 536th Lv0Sys 🇵🇱 900 74 16 hours ago 638th edsrzf 🇳🇿 900 83 14 Jan 2025 638th kg583 🇺🇸 900 83 14 Feb 2025 640th michael-pruglo 🇺🇦 900 94 5 Jul 2022 640th zygoloid 900 94 5 Aug 2024 642nd SirBogman 🇺🇸 899 50 5 May 2022 642nd nwellnhof 🇩🇪 899 50 3 Jun 2022 642nd Lydxn 🇨🇦 899 50 15 Aug 2022 642nd bitsandbeyond 🇳🇱 899 50 9 Aug 2024 642nd Steffan153 🇫🇮 899 50 9 Aug 2024 642nd DialFrost 🇸🇬 899 50 7 Apr 2025 648th Lydxn 🇨🇦 899 69 12 Sep 2022 648th GrayJoKing 🇦🇺 899 69 12 Sep 2022 648th btnlq 899 69 24 Sep 2022 651st Steffan153 🇫🇮 899 82 1 Apr 2023 651st sean-niemann 🇺🇸 899 82 12 Jul 2024 653rd DialFrost 🇸🇬 897 29 15 Mar 2025 654th Lydxn 🇨🇦 897 48 5 May 2022 654th pabloferz 897 48 6 Mar 2024 656th GrayJoKing 🇦🇺 897 70 6 May 2022 656th saito-ta 🇯🇵 897 70 21 Dec 2023 656th ovs-code 🇩🇪 897 70 17 Feb 2024 659th nwellnhof 🇩🇪 897 111 4 May 2022 659th emplv 🇱🇻 897 111 5 May 2022 659th Shanethegamer 🇺🇸 897 111 21 Nov 2023 662nd zacjl 896 34 11 Dec 2024 663rd Steffan153 🇫🇮 896 59 10 Aug 2024 663rd rucin93 🇵🇱 896 59 13 Oct 2024 663rd sean-niemann 🇺🇸 896 59 13 Oct 2024 663rd lukegustafson 🇺🇸 896 59 24 Oct 2024 667th MichalMarsalek 🇨🇿 896 87 5 May 2022 667th Kloppermand 🇩🇰 896 87 7 Oct 2022 669th DialFrost 🇸🇬 895 69 15 Jul 2024 670th edsrzf 🇳🇿 895 78 26 Oct 2024 671st Ripick 894 73 8 May 2023 672nd ovs-code 🇩🇪 894 89 24 Jul 2024 672nd jipsong 🇩🇪 894 89 7 Apr 2025 674th SiestaGuru 894 131 9 Jan 2023 674th HumanoidCPU 894 131 7 May 2024 Prev 601–675 of 3,068 Next