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 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 NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi 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 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 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 NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Chars Time Submitted 675th JayXon 🇺🇸 872 49 252ms 5 May 2022 675th Steffan153 🇫🇮 872 49 278ms 10 Dec 2022 675th ovs-code 🇩🇪 872 49 389ms 24 Oct 2023 675th sean-niemann 🇺🇸 872 49 254ms 12 Jul 2024 680th dokutan 872 62 5ms 28 Apr 2025 681st DialFrost 🇸🇬 872 86 49ms 24 Oct 2024 681st stefangimmillaro 872 86 49ms 14 Jan 2025 683rd c0d3-4-F00d 🇩🇪 872 89 311ms 5 May 2022 683rd fkantelberg 872 89 319ms 15 Jul 2023 683rd bac0id 872 89 320ms 26 Sep 2023 683rd TRexOnGit 872 89 320ms 16 Feb 2024 687th inventshah 872 97 54ms 6 May 2022 687th roupiq 🇵🇱 872 97 58ms 22 Nov 2023 689th janbehrens 🇩🇪 871 90 442ms 21 Apr 2023 689th Yewzir 🇧🇪 871 90 463ms 22 Apr 2023 689th DialFrost 🇸🇬 871 90 440ms 6 Nov 2023 689th Ripick 871 90 439ms 27 Nov 2024 693rd AlephSquirrel 870 80 11ms 20 Apr 2023 693rd ashtraypettingzoo 🇺🇸 870 80 14ms 1 Apr 2024 695th GolfingSuccess 🇬🇷 869 71 2ms 5 May 2022 695th emplv 🇱🇻 869 71 3ms 5 May 2022 695th JayXon 🇺🇸 869 71 2ms 7 May 2022 695th m-tkach 🇺🇦 869 71 2ms 15 May 2022 695th nwellnhof 🇩🇪 869 71 2ms 5 Jun 2022 695th Irratix 🇳🇱 869 71 3ms 13 Jun 2022 695th michael-pruglo 🇺🇦 869 71 3ms 13 Jul 2022 695th stefangimmillaro 869 71 2ms 2 Jun 2023 695th kkoenig 869 71 3ms 21 Dec 2023 695th JohandeRuiter 🇳🇱 869 71 3ms 14 Sep 2024 695th masinag 🇮🇹 869 71 2ms 6 Oct 2024 706th dokutan 868 82 24ms 1 Jul 2024 707th nwellnhof 🇩🇪 867 53 7ms 4 May 2022 707th GrayJoKing 🇦🇺 867 53 7ms 6 May 2022 709th dieggsy 867 97 41ms 8 Oct 2024 710th GolfingSuccess 🇬🇷 866 57 787ms 29 Aug 2025 711th Shanethegamer 🇺🇸 866 70 93ms 12 Dec 2022 711th Alessandro-Balconi 🇮🇹 866 70 88ms 26 Dec 2022 711th snoozingnewt 🇺🇸 866 70 177ms 3 days ago 714th Andriamanitra 🇫🇮 865 54 42ms 21 Jul 2022 714th jared-hughes 865 54 39ms 12 Sep 2022 714th OhmNomNom 865 54 47ms 7 Oct 2022 714th olleicua 🇺🇸 865 54 41ms 21 Jan 2024 714th LostSyntax21 🇬🇧 865 54 41ms 12 Mar 2025 714th AbrahamJLR 🇻🇪 865 54 40ms 4 Jun 2025 714th vishal-mohanty 865 54 42ms 25 Aug 2025 721st MeWhenI 🇻🇦 865 85 44ms 27 Jun 2022 721st Shanethegamer 🇺🇸 865 85 42ms 15 May 2023 721st albanian-laundromat 865 85 45ms 25 Aug 2025 724th 123mjb 865 96 346ms 5 days ago 724th noescareno 865 96 344ms 3 days ago 726th ovs-code 🇩🇪 865 133 42ms 8 Jul 2024 727th DialFrost 🇸🇬 864 64 5ms 10 Jul 2024 728th mtirado1 863 75 8ms 13 Aug 2022 729th TylerBloom 863 96 127ms 22 Mar 2024 730th shellbertt 🇨🇦 863 98 55ms 9 May 2022 730th iakolzin 863 98 52ms 26 May 2022 730th Betuaredead 863 98 53ms 5 Jan 2023 730th oceko 863 98 55ms 19 Feb 2024 730th dokutan 863 98 55ms 17 Mar 2024 730th cuzdav 863 98 53ms 4 May 2025 730th timhaj 🇸🇮 863 98 56ms 12 Sep 2025 730th Yax42 🇫🇷 863 98 53ms 4 Oct 2025 738th Steffan153 🇫🇮 862 82 1,270ms 23 Feb 2023 739th deadp4nda 🇩🇪 862 90 315ms 26 Apr 2024 739th 123mjb 862 90 321ms 23 Jun 2025 739th michelebastione 🇮🇹 862 90 365ms 24 Aug 2025 739th razvandmtr 🇷🇴 862 90 493ms 19 days ago 743rd steffan-polygolf 861 73 79ms 23 Feb 2023 743rd MWI-polygolf 861 73 73ms 6 Dec 2023 743rd HumanoidCPU 861 73 80ms 7 May 2024 746th Steffan153 🇫🇮 861 78 82ms 4 Feb 2023 747th GrayJoKing 🇦🇺 860 56 416ms 15 Jan 2024 747th AlephSquirrel 860 56 704ms 21 Jan 2024 749th Setvizan 860 62 10ms 12 Jan 2023 749th GreenBeansAgainstVeganism 860 62 12ms 13 Jan 2023 First Prev 676–750 of 3,461 Next Last