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 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 Hilbert Curve 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 Knight 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 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 Knight 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 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 Hilbert Curve 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 602nd Mabeloid 🇳🇴 900 74 1 Sep 2024 602nd madeforlosers 900 74 5 Sep 2024 602nd LostSyntax21 🇬🇧 900 74 10 Sep 2024 602nd Deedogg 900 74 11 Sep 2024 602nd MassimoParisi 900 74 18 Sep 2024 602nd FortuiteMan 900 74 10 Oct 2024 602nd lifthrasiir 🇰🇷 900 74 13 Nov 2024 602nd agreegious 900 74 17 Nov 2024 602nd Stockoh 🇫🇷 900 74 17 Nov 2024 602nd Andrey135296 900 74 24 Nov 2024 602nd TralfamadorianComedian 900 74 6 Dec 2024 602nd bltnppcnt 900 74 3 Jan 2025 602nd ZorblaxV 900 74 12 Jan 2025 602nd yokasuretsu 900 74 13 Jan 2025 602nd Artemis21 🇬🇧 900 74 17 Jan 2025 602nd gdpr777 900 74 10 Feb 2025 602nd Pyroan 900 74 27 Mar 2025 602nd Squimbletin 900 74 19 Apr 2025 602nd Kowalskiexe 🇵🇱 900 74 19 Apr 2025 602nd Dandandooo 900 74 23 Apr 2025 602nd khangtm123 900 74 4 May 2025 602nd 40fied4t 900 74 6 May 2025 602nd keelimeguy 🇺🇸 900 74 13 May 2025 602nd TheZwierzLF 🇵🇱 900 74 21 May 2025 602nd kbeat 🇰🇿 900 74 21 May 2025 602nd LvLError 900 74 29 May 2025 602nd Lv0Sys 🇵🇱 900 74 30 May 2025 602nd ffelixm 900 74 3 Jun 2025 602nd Flekay 🇩🇪 900 74 19 Jun 2025 602nd DoubleUynn 900 74 25 Jun 2025 602nd osNiko 🇧🇷 900 74 26 Jul 2025 602nd wobblybits 900 74 9 days ago 602nd denisfouchard 900 74 24 mins ago 709th SirBogman 🇺🇸 899 50 5 May 2022 709th nwellnhof 🇩🇪 899 50 3 Jun 2022 709th Lydxn 🇨🇦 899 50 15 Aug 2022 709th Steffan153 🇫🇮 899 50 9 Aug 2024 713th DialFrost 🇸🇬 898 69 15 Jul 2024 714th GrayJoKing 🇦🇺 898 70 6 May 2022 714th saito-ta 🇯🇵 898 70 21 Dec 2023 714th ovs-code 🇩🇪 898 70 17 Feb 2024 714th trinityy-7 898 70 15 days ago 714th KasperKivimaeki 🇫🇮 898 70 14 days ago 719th DialFrost 🇸🇬 897 29 15 Mar 2025 720th Lydxn 🇨🇦 897 48 5 May 2022 720th pabloferz 897 48 6 Mar 2024 722nd nwellnhof 🇩🇪 897 111 4 May 2022 722nd emplv 🇱🇻 897 111 5 May 2022 722nd Shanethegamer 🇺🇸 897 111 21 Nov 2023 725th Steffan153 🇫🇮 896 59 10 Aug 2024 725th rucin93 🇵🇱 896 59 13 Oct 2024 725th sean-niemann 🇺🇸 896 59 13 Oct 2024 725th lukegustafson 🇺🇸 896 59 24 Oct 2024 729th Ripick 896 73 8 May 2023 730th GrayJoKing 🇦🇺 896 91 19 Jan 2023 731st Lydxn 🇨🇦 895 72 16 Jul 2023 732nd edsrzf 🇳🇿 895 78 26 Oct 2024 733rd SiestaGuru 895 131 9 Jan 2023 733rd HumanoidCPU 895 131 7 May 2024 735th JayXon 🇺🇸 895 150 8 Sep 2023 736th MichalMarsalek 🇨🇿 894 87 5 May 2022 736th Kloppermand 🇩🇰 894 87 7 Oct 2022 736th bwat2 894 87 6 Apr 2023 739th ovs-code 🇩🇪 894 89 24 Jul 2024 739th jipsong 🇩🇪 894 89 7 Apr 2025 741st oeb25 893 93 16 May 2022 741st snobee 🇨🇦 893 93 8 Dec 2022 741st logvp 893 93 2 Jan 2024 741st elgan65536 893 93 5 Mar 2024 741st smartiel 893 93 12 Aug 2024 741st trist224 🇫🇷 893 93 12 Aug 2024 741st nullie 893 93 19 Dec 2024 741st lolgeny 893 93 22 Feb 2025 749th Steffan153 🇫🇮 892 52 31 Dec 2022 750th Shanethegamer 🇺🇸 892 61 31 Oct 2022 Prev 676–750 of 3,279 Next
