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 Calendar 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 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 Numbrix 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 ArkScript 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 ArkScript 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 Calendar 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 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 Numbrix 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 638th Heathcorp 🇦🇺 874 61 11ms 17 Jul 2022 638th C0de5mith 🇺🇸 874 61 11ms 3 Aug 2022 638th sebipopa 🇷🇴 874 61 12ms 18 Aug 2022 638th moikaturns 🇬🇧 874 61 10ms 25 Sep 2022 638th FlorianCassayre 🇫🇷 874 61 10ms 27 Sep 2022 638th Mazn3k 874 61 11ms 1 Feb 2023 638th tvcv901 874 61 12ms 22 Mar 2023 638th unfinishedprogram 874 61 12ms 19 Jul 2023 638th snoozingnewt 🇨🇦 874 61 10ms 23 Sep 2023 638th funnyboy-roks 874 61 11ms 9 May 2024 638th bac0id 874 61 13ms 29 Jun 2024 638th madex 🇩🇪 874 61 11ms 9 Jul 2024 638th FortuiteMan 🇫🇷 874 61 12ms 10 Oct 2024 638th RobertHoeh 874 61 10ms 5 Apr 2025 638th LvLError 874 61 10ms 29 May 2025 638th miles-evan 874 61 11ms 5 Aug 2025 638th alexsave 874 61 10ms 13 Oct 2025 658th dokutan 873 62 5ms 28 Apr 2025 659th NerdyMcNerd42 873 64 19ms 26 Oct 2022 659th tpasfieldERAU 873 64 23ms 14 Nov 2022 659th CheeseCake628 🇳🇴 873 64 22ms 6 Jan 2023 659th adamnielson42 🇺🇸 873 64 19ms 25 Apr 2023 659th nathsou 🇫🇷 873 64 19ms 2 Sep 2023 659th zwxzwxzwx21 873 64 25ms 30 Jan 2024 659th steffan-polygolf 873 64 19ms 8 Mar 2024 659th Jacob385 873 64 57ms 4 Apr 2024 659th gallium-gonzollium 873 64 28ms 26 Aug 2024 668th Shanethegamer 🇺🇸 873 66 172ms 4 May 2022 668th scpchicken 🇵🇼 873 66 254ms 5 May 2022 668th sisyphus-ppcg 🇦🇺 873 66 174ms 6 May 2022 668th Natanaelel 🇸🇪 873 66 144ms 15 Jun 2022 668th Z-snails 873 66 254ms 27 Feb 2023 668th Jeremy-Stafford 873 66 258ms 27 Feb 2023 668th alomiF 873 66 293ms 1 Sep 2023 668th btnlq 873 66 145ms 17 Oct 2023 676th johnnythedoggie 873 72 87ms 13 May 2022 676th kaascevich 873 72 90ms 8 Jul 2025 678th DialFrost 🇸🇬 873 73 90ms 3 Jun 2025 679th HPWiz 🇳🇿 872 49 247ms 4 May 2022 679th JayXon 🇺🇸 872 49 237ms 5 May 2022 679th Steffan153 🇫🇮 872 49 247ms 10 Dec 2022 679th ovs-code 🇩🇪 872 49 425ms 24 Oct 2023 679th sean-niemann 🇺🇸 872 49 271ms 12 Jul 2024 684th DialFrost 🇸🇬 872 86 40ms 24 Oct 2024 684th stefangimmillaro 872 86 39ms 14 Jan 2025 686th c0d3-4-F00d 🇩🇪 872 89 368ms 5 May 2022 686th fkantelberg 872 89 407ms 15 Jul 2023 686th bac0id 872 89 374ms 26 Sep 2023 686th TRexOnGit 872 89 432ms 16 Feb 2024 690th janbehrens 🇩🇪 872 90 442ms 21 Apr 2023 690th Yewzir 🇧🇪 872 90 426ms 22 Apr 2023 690th Ripick 872 90 439ms 27 Nov 2024 690th emgordon154 872 90 368ms 10 Dec 2025 694th emgordon154 872 96 104ms 3 Dec 2025 695th inventshah 872 97 57ms 6 May 2022 695th roupiq 🇵🇱 872 97 55ms 22 Nov 2023 697th MeWhenI 🇻🇦 872 109 247ms 9 Feb 2023 698th AlephSquirrel 870 80 12ms 20 Apr 2023 698th ashtraypettingzoo 🇺🇸 870 80 15ms 1 Apr 2024 700th GolfingSuccess 🇬🇷 869 71 2ms 5 May 2022 700th emplv 🇱🇻 869 71 2ms 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 2ms 13 Jun 2022 700th michael-pruglo 🇺🇦 869 71 2ms 13 Jul 2022 700th stefangimmillaro 869 71 2ms 2 Jun 2023 700th kkoenig 869 71 2ms 21 Dec 2023 700th JohandeRuiter 🇳🇱 869 71 2ms 14 Sep 2024 700th masinag 🇮🇹 869 71 2ms 6 Oct 2024 711th dokutan 868 82 21ms 1 Jul 2024 712th nwellnhof 🇩🇪 867 53 6ms 4 May 2022 712th GrayJoKing 🇦🇺 867 53 7ms 6 May 2022 714th albanian-laundromat 867 73 557ms 16 Dec 2025 715th dieggsy 867 97 28ms 8 Oct 2024 716th ovs-code 🇩🇪 867 133 42ms 8 Jul 2024 717th Andriamanitra 🇫🇮 866 54 41ms 21 Jul 2022 717th jared-hughes 866 54 37ms 12 Sep 2022 717th OhmNomNom 866 54 37ms 7 Oct 2022 717th olleicua 🇺🇸 866 54 41ms 21 Jan 2024 First Prev 641–720 of 3,509 Next Last