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 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 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 399th Languag3 912 73 27 Feb 2025 399th Bulmenisaurus 912 73 2 Mar 2025 399th souta-1326 912 73 1 Apr 2025 454th JayXon 🇺🇸 912 74 14 Nov 2024 454th pardouin 🇫🇷 912 74 14 Nov 2024 456th lynn 912 78 5 May 2022 457th Steffan153 🇫🇮 912 81 11 Dec 2023 458th andersk 🇺🇸 911 91 25 Oct 2022 458th Super-Pizza 🇨🇦 911 91 4 Dec 2022 458th klixel 🇨🇦 911 91 20 May 2023 458th lynn 911 91 6 Jul 2024 458th edsrzf 🇳🇿 911 91 29 Nov 2024 458th acotis 911 91 23 Mar 2025 458th DialFrost 🇸🇬 911 91 26 days ago 465th nai62 910 69 27 Aug 2022 466th Lydxn 🇨🇦 910 81 1 Apr 2023 467th primo-ppcg 🇹🇭 909 93 7 May 2022 467th AlephSquirrel 909 93 21 Jan 2023 467th tailorspy 909 93 27 May 2024 467th kg583 🇺🇸 909 93 26 Dec 2024 467th CLOStrophobic 🇮🇹 909 93 17 Jan 2025 472nd cbrt-x 908 129 6 May 2022 472nd piano-miles 908 129 8 Feb 2023 472nd lukashert 908 129 7 Jun 2023 472nd DialFrost 🇸🇬 908 129 29 Jan 2024 472nd bac0id 908 129 29 Jun 2024 472nd yoshykai 908 129 27 Mar 2025 478th Shanethegamer 🇺🇸 907 77 15 May 2023 479th Betuaredead 906 60 5 Jan 2023 479th Yewzir 🇧🇪 906 60 12 Feb 2023 479th Steffan153 🇫🇮 906 60 23 Feb 2023 479th DialFrost 🇸🇬 906 60 30 Jul 2024 479th GolfingSuccess 🇬🇷 906 60 16 Oct 2024 479th sean-niemann 🇺🇸 906 60 7 Mar 2025 485th GolfingSuccess 🇬🇷 906 64 14 Dec 2024 485th MeWhenI 🇻🇦 906 64 24 Dec 2024 487th GrayJoKing 🇦🇺 906 71 10 Aug 2023 488th krcs 🇵🇱 906 86 10 May 2022 489th KrausRaus 🇺🇸 905 59 4 May 2022 489th voytxt 🇨🇿 905 59 4 May 2022 489th KingSkyrock 🇺🇸 905 59 18 May 2022 489th ZakkkkAttackkkk 🇵🇭 905 59 14 Jul 2022 489th aksyristos 905 59 28 Oct 2022 489th nstearns96 🇬🇧 905 59 28 Nov 2022 489th janbehrens 🇩🇪 905 59 17 May 2023 489th Shanethegamer 🇺🇸 905 59 25 May 2023 489th Maznek 905 59 26 Jun 2023 489th SpiritAxolotl 🇺🇸 905 59 20 Mar 2024 489th Andrey-Plotnikov 905 59 19 May 2024 489th emgordon154 905 59 5 Aug 2024 489th duckyluuk 🇳🇱 905 59 3 Oct 2024 489th lifthrasiir 🇰🇷 905 59 23 Nov 2024 503rd MeWhenI 🇻🇦 905 63 5 May 2022 504th ovs-code 🇩🇪 905 84 25 Sep 2022 504th GrayJoKing 🇦🇺 905 84 11 Aug 2023 506th Lydxn 🇨🇦 904 64 1 Apr 2023 507th DialFrost 🇸🇬 904 77 27 Feb 2025 508th marshallward 🇺🇸 904 83 10 May 2022 509th MeWhenI 🇻🇦 904 110 9 Feb 2023 509th edsrzf 🇳🇿 904 110 28 Nov 2024 511th shinh 903 52 29 Jun 2022 511th pardouin 🇫🇷 903 52 21 days ago 513th Steffan153 🇫🇮 903 80 15 Nov 2022 513th error256 903 80 25 days ago 515th m-tkach 🇺🇦 903 90 7 Dec 2023 516th nipzu 902 48 8 Sep 2024 517th Shanethegamer 🇺🇸 902 72 4 May 2022 517th jared-hughes 902 72 4 May 2022 517th Waffle3z 902 72 5 May 2022 517th m-tkach 🇺🇦 902 72 16 Oct 2022 517th GrayJoKing 🇦🇺 902 72 22 Oct 2022 517th emplv 🇱🇻 902 72 27 Oct 2022 517th sean-niemann 🇺🇸 902 72 7 Mar 2025 517th Blendi-Goose 902 72 16 Mar 2025 517th edsrzf 🇳🇿 902 72 21 days ago Prev 451–525 of 3,009 Next