Collatz in all languages in chars. Achievements Cheevos Holes Languages Medals Miscellaneous 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 Minesweeper 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 Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang 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 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 Erlang 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 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 Minesweeper 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 Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 676th DialFrost 🇸🇬 873 73 83ms 3 Jun 2025 677th nwellnhof 🇩🇪 873 111 258ms 4 May 2022 677th stefangimmillaro 873 111 262ms 26 Sep 2023 677th kkoenig 873 111 264ms 4 Jan 2024 680th HPWiz 🇳🇿 872 49 241ms 4 May 2022 680th JayXon 🇺🇸 872 49 251ms 5 May 2022 680th Steffan153 🇫🇮 872 49 236ms 10 Dec 2022 680th ovs-code 🇩🇪 872 49 389ms 24 Oct 2023 680th sean-niemann 🇺🇸 872 49 246ms 12 Jul 2024 685th dokutan 872 62 5ms 28 Apr 2025 686th DialFrost 🇸🇬 872 86 49ms 24 Oct 2024 686th stefangimmillaro 872 86 49ms 14 Jan 2025 688th c0d3-4-F00d 🇩🇪 872 89 311ms 5 May 2022 688th fkantelberg 872 89 319ms 15 Jul 2023 688th bac0id 872 89 320ms 26 Sep 2023 688th TRexOnGit 872 89 320ms 16 Feb 2024 692nd inventshah 872 97 58ms 6 May 2022 692nd roupiq 🇵🇱 872 97 56ms 22 Nov 2023 694th janbehrens 🇩🇪 871 90 442ms 21 Apr 2023 694th Yewzir 🇧🇪 871 90 463ms 22 Apr 2023 694th DialFrost 🇸🇬 871 90 440ms 6 Nov 2023 694th Ripick 871 90 439ms 27 Nov 2024 698th AlephSquirrel 870 80 11ms 20 Apr 2023 698th ashtraypettingzoo 🇺🇸 870 80 14ms 1 Apr 2024 700th GolfingSuccess 🇬🇷 869 71 2ms 5 May 2022 700th emplv 🇱🇻 869 71 3ms 5 May 2022 700th JayXon 🇺🇸 869 71 2ms 7 May 2022 700th m-tkach 🇺🇦 869 71 2ms 15 May 2022 700th nwellnhof 🇩🇪 869 71 2ms 5 Jun 2022 700th Irratix 🇳🇱 869 71 3ms 13 Jun 2022 700th michael-pruglo 🇺🇦 869 71 3ms 13 Jul 2022 700th stefangimmillaro 869 71 2ms 2 Jun 2023 700th kkoenig 869 71 3ms 21 Dec 2023 700th JohandeRuiter 🇳🇱 869 71 3ms 14 Sep 2024 700th masinag 🇮🇹 869 71 2ms 6 Oct 2024 711th emgordon154 869 96 100ms 2 days ago 712th dokutan 868 82 22ms 1 Jul 2024 713th nwellnhof 🇩🇪 867 53 7ms 4 May 2022 713th GrayJoKing 🇦🇺 867 53 7ms 6 May 2022 715th dieggsy 867 97 41ms 8 Oct 2024 716th ovs-code 🇩🇪 867 133 42ms 8 Jul 2024 717th GolfingSuccess 🇬🇷 866 57 798ms 29 Aug 2025 718th Shanethegamer 🇺🇸 866 70 93ms 12 Dec 2022 718th Alessandro-Balconi 🇮🇹 866 70 88ms 26 Dec 2022 718th snoozingnewt 🇨🇦 866 70 177ms 13 days ago 721st Andriamanitra 🇫🇮 865 54 42ms 21 Jul 2022 721st jared-hughes 865 54 39ms 12 Sep 2022 721st OhmNomNom 865 54 47ms 7 Oct 2022 721st olleicua 🇺🇸 865 54 41ms 21 Jan 2024 721st LostSyntax21 🇬🇧 865 54 41ms 12 Mar 2025 721st AbrahamJLR 🇻🇪 865 54 40ms 4 Jun 2025 721st vishal-mohanty 865 54 42ms 25 Aug 2025 728th MeWhenI 🇻🇦 865 85 44ms 27 Jun 2022 728th Shanethegamer 🇺🇸 865 85 42ms 15 May 2023 728th albanian-laundromat 865 85 45ms 25 Aug 2025 731st 123mjb 865 96 346ms 16 days ago 731st noescareno 865 96 344ms 14 days ago 733rd albanian-laundromat 865 112 255ms 3 days ago 734th DialFrost 🇸🇬 864 64 5ms 10 Jul 2024 735th mtirado1 863 75 7ms 13 Aug 2022 736th TylerBloom 863 96 127ms 22 Mar 2024 737th shellbertt 🇨🇦 863 98 56ms 9 May 2022 737th iakolzin 863 98 58ms 26 May 2022 737th Betuaredead 863 98 58ms 5 Jan 2023 737th oceko 863 98 56ms 19 Feb 2024 737th dokutan 863 98 56ms 17 Mar 2024 737th cuzdav 863 98 57ms 4 May 2025 737th timhaj 🇸🇮 863 98 53ms 12 Sep 2025 737th Yax42 🇫🇷 863 98 55ms 4 Oct 2025 745th Steffan153 🇫🇮 862 82 1,270ms 23 Feb 2023 746th deadp4nda 🇩🇪 862 90 315ms 26 Apr 2024 746th 123mjb 862 90 321ms 23 Jun 2025 746th michelebastione 🇮🇹 862 90 365ms 24 Aug 2025 746th razvandmtr 🇷🇴 862 90 342ms 6 Nov 2025 750th steffan-polygolf 861 73 79ms 23 Feb 2023 First Prev 676–750 of 3,485 Next Last