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 373rd GrayJoKing 🇦🇺 919 76 24 Aug 2023 377th tomtheisen 🇺🇸 918 85 10 Apr 2025 378th primo-ppcg 🇹🇭 917 61 6 May 2022 378th sisyphus-ppcg 🇦🇺 917 61 14 Jul 2022 380th Lydxn 🇨🇦 915 70 7 May 2022 380th JayXon 🇺🇸 915 70 7 May 2022 382nd Steffan153 🇫🇮 915 71 14 Oct 2022 382nd Shanethegamer 🇺🇸 915 71 15 Oct 2022 382nd stefangimmillaro 915 71 16 Oct 2022 382nd MeWhenI 🇻🇦 915 71 16 Oct 2022 382nd Steffan153 🇫🇮 915 71 10 Dec 2022 387th annaproxy 915 79 24 Aug 2022 387th GrayJoKing 🇦🇺 915 79 28 Aug 2022 387th IanUtley 915 79 3 Nov 2023 387th Kacarott 🇦🇺 915 79 13 Jun 2024 391st Natanaelel 🇸🇪 914 57 17 Jan 2024 391st Kacarott 🇦🇺 914 57 10 Sep 2024 393rd JayXon 🇺🇸 914 79 5 Apr 2023 393rd Lydxn 🇨🇦 914 79 9 Apr 2023 395th Shanethegamer 🇺🇸 914 87 15 May 2023 395th JayXon 🇺🇸 914 87 15 May 2023 395th Steffan153 🇫🇮 914 87 16 May 2023 395th Lydxn 🇨🇦 914 87 16 May 2023 395th GrayJoKing 🇦🇺 914 87 11 Aug 2023 395th sean-niemann 🇺🇸 914 87 11 Jul 2024 401st Shanethegamer 🇺🇸 913 61 9 Oct 2023 402nd pardouin 🇫🇷 913 72 18 days ago 403rd ovs-code 🇩🇪 913 75 12 Sep 2024 403rd Kacarott 🇦🇺 913 75 13 Sep 2024 405th sean-niemann 🇺🇸 913 109 25 May 2024 405th CaedenHarper 🇨🇦 913 109 28 Jan 2025 407th AdamHe17 912 73 31 May 2022 407th AliceFord 912 73 2 Jun 2022 407th Natanaelel 🇸🇪 912 73 16 Jun 2022 407th btjones0 912 73 21 Jun 2022 407th marcin7Cd 912 73 27 Jun 2022 407th tri1212 🇻🇳 912 73 18 Jul 2022 407th vhoulbreque 🇫🇷 912 73 18 Aug 2022 407th KatieLG 🇬🇧 912 73 29 Aug 2022 407th tkr-sh 🇫🇷 912 73 8 Sep 2022 407th jroscoe5 912 73 15 Sep 2022 407th fredrik-bakke 🇳🇴 912 73 18 Sep 2022 407th firegene 🇮🇪 912 73 27 Sep 2022 407th OhmNomNom 912 73 7 Oct 2022 407th 0-4849 912 73 1 Nov 2022 407th M0PKOBKA 912 73 19 Dec 2022 407th calumacutt 912 73 19 Dec 2022 407th thehylian 912 73 2 Jan 2023 407th fynnkroeger 912 73 6 Jan 2023 407th shellbertt 🇨🇦 912 73 13 Jan 2023 407th hunt-g 912 73 4 Feb 2023 407th packkill 912 73 13 Feb 2023 407th jmerle 🇳🇱 912 73 16 Feb 2023 407th TaserTheFox 🇺🇸 912 73 14 Mar 2023 407th pinguicula 912 73 6 Apr 2023 407th TheoKeller1 912 73 11 Jun 2023 407th fkantelberg 912 73 16 Jul 2023 407th Mikey-Beep 🇬🇧 912 73 31 Aug 2023 407th eiburns 912 73 9 Oct 2023 407th htareque 912 73 13 Oct 2023 407th wearsunscreen 912 73 18 Oct 2023 407th bzijlema 🇳🇱 912 73 25 Oct 2023 407th Grrisly 912 73 10 Nov 2023 407th m42km 912 73 11 Nov 2023 407th GeneralPoxter 912 73 7 Dec 2023 407th logvp 912 73 12 Jan 2024 407th JoaoFelipe3 912 73 13 Jan 2024 407th ehulinsky 🇺🇸 912 73 16 Feb 2024 407th Lewenhaupt 912 73 23 Feb 2024 407th Yewzir 🇧🇪 912 73 5 Apr 2024 407th HETHAT 🇩🇿 912 73 12 Apr 2024 407th stertooy 🇧🇪 912 73 9 Jun 2024 407th cuboids 912 73 11 Jul 2024 407th jipsong 🇩🇪 912 73 23 Jul 2024 407th mattyhempstead 912 73 6 Oct 2024 Prev 376–450 of 3,081 Next
