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 433rd shellbertt 🇨🇦 913 73 13 Jan 2023 433rd hunt-g 913 73 4 Feb 2023 433rd ljweel 913 73 13 Feb 2023 433rd jmerle 🇳🇱 913 73 16 Feb 2023 433rd TaserTheFox 🇺🇸 913 73 14 Mar 2023 433rd pinguicula 913 73 6 Apr 2023 433rd TheoKeller1 913 73 11 Jun 2023 433rd fkantelberg 913 73 16 Jul 2023 433rd Mikey-Beep 🇬🇧 913 73 31 Aug 2023 433rd eiburns 913 73 9 Oct 2023 433rd htareque 913 73 13 Oct 2023 433rd wearsunscreen 913 73 18 Oct 2023 433rd bzijlema 🇳🇱 913 73 25 Oct 2023 433rd Grrisly 913 73 10 Nov 2023 433rd m42km 913 73 11 Nov 2023 433rd GeneralPoxter 913 73 7 Dec 2023 433rd logvp 913 73 12 Jan 2024 433rd JoaoFelipe3 913 73 13 Jan 2024 433rd ehulinsky 🇺🇸 913 73 16 Feb 2024 433rd Lewenhaupt 913 73 23 Feb 2024 433rd Yewzir 🇧🇪 913 73 5 Apr 2024 433rd stertooy 🇧🇪 913 73 9 Jun 2024 433rd cuboids 913 73 11 Jul 2024 433rd jipsong 🇩🇪 913 73 23 Jul 2024 433rd mattyhempstead 913 73 6 Oct 2024 433rd wh3n3v3r 🇨🇿 913 73 18 Nov 2024 433rd klixel 🇨🇦 913 73 18 Nov 2024 433rd tjwrenn 913 73 10 Dec 2024 433rd nullie 913 73 19 Dec 2024 433rd ryyyn 🇺🇸 913 73 7 Jan 2025 433rd maxgodfrey2004 🇨🇦 913 73 13 Feb 2025 433rd lolgeny 913 73 22 Feb 2025 433rd andrewjc2000 913 73 23 Feb 2025 433rd Languag3 913 73 27 Feb 2025 433rd Bulmenisaurus 913 73 2 Mar 2025 433rd souta-1326 913 73 1 Apr 2025 433rd BenjaminHGong 913 73 26 May 2025 433rd FEZfan 🇦🇺 913 73 11 Jul 2025 433rd wuduculfre 913 73 28 Jul 2025 433rd BREMAUCY 🇫🇷 913 73 24 Aug 2025 491st ovs-code 🇩🇪 913 75 12 Sep 2024 491st Kacarott 🇦🇺 913 75 13 Sep 2024 493rd Lydxn 🇨🇦 913 81 1 Apr 2023 494th andersk 🇺🇸 913 91 25 Oct 2022 494th Super-Pizza 🇨🇦 913 91 4 Dec 2022 494th klixel 🇨🇦 913 91 20 May 2023 494th lynn 913 91 6 Jul 2024 494th edsrzf 🇳🇿 913 91 29 Nov 2024 494th DialFrost 🇸🇬 913 91 7 Apr 2025 500th lynn 912 78 5 May 2022 501st nai62 911 69 27 Aug 2022 502nd GrayJoKing 🇦🇺 911 71 10 Aug 2023 503rd tailorspy 911 93 27 May 2024 503rd sean-niemann 🇺🇸 911 93 9 Jun 2025 505th GolfingSuccess 🇬🇷 910 64 14 Dec 2024 505th MeWhenI 🇻🇦 910 64 24 Dec 2024 507th MeWhenI 🇻🇦 909 63 5 May 2022 508th marshallward 🇺🇸 909 83 10 May 2022 509th primo-ppcg 🇹🇭 909 93 7 May 2022 509th AlephSquirrel 909 93 21 Jan 2023 509th kg583 🇺🇸 909 93 26 Dec 2024 509th CLOStrophobic 🇮🇹 909 93 17 Jan 2025 509th edsrzf 🇳🇿 909 93 3 Jul 2025 514th edsrzf 🇳🇿 908 72 3 Jul 2025 515th DialFrost 🇸🇬 908 76 3 Aug 2025 516th Shanethegamer 🇺🇸 908 77 15 May 2023 517th ovs-code 🇩🇪 908 84 25 Sep 2022 517th GrayJoKing 🇦🇺 908 84 11 Aug 2023 519th Betuaredead 907 60 5 Jan 2023 519th Yewzir 🇧🇪 907 60 12 Feb 2023 519th Steffan153 🇫🇮 907 60 23 Feb 2023 519th DialFrost 🇸🇬 907 60 30 Jul 2024 519th GolfingSuccess 🇬🇷 907 60 16 Oct 2024 519th sean-niemann 🇺🇸 907 60 7 Mar 2025 525th MeWhenI 🇻🇦 907 110 9 Feb 2023 Prev 451–525 of 3,340 Next
