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 Multitap Input 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 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 Lily 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 Lily 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 Multitap Input 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 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 641st rucin93 🇵🇱 874 57 144ms 4 Aug 2024 641st dokutan 874 57 135ms 9 Aug 2024 643rd c0d3-4-F00d 🇩🇪 874 61 11ms 6 May 2022 643rd jackkav 874 61 11ms 26 Jun 2022 643rd TechNolaByte 874 61 11ms 6 Jul 2022 643rd Heathcorp 🇦🇺 874 61 11ms 17 Jul 2022 643rd C0de5mith 🇺🇸 874 61 11ms 3 Aug 2022 643rd sebipopa 🇷🇴 874 61 12ms 18 Aug 2022 643rd moikaturns 🇬🇧 874 61 10ms 25 Sep 2022 643rd FlorianCassayre 🇫🇷 874 61 10ms 27 Sep 2022 643rd Mazn3k 874 61 11ms 1 Feb 2023 643rd tvcv901 874 61 12ms 22 Mar 2023 643rd unfinishedprogram 874 61 12ms 19 Jul 2023 643rd snoozingnewt 🇨🇦 874 61 10ms 23 Sep 2023 643rd funnyboy-roks 874 61 11ms 9 May 2024 643rd bac0id 874 61 13ms 29 Jun 2024 643rd madex 🇩🇪 874 61 11ms 9 Jul 2024 643rd FortuiteMan 🇫🇷 874 61 12ms 10 Oct 2024 643rd RobertHoeh 874 61 10ms 5 Apr 2025 643rd LvLError 874 61 10ms 29 May 2025 643rd miles-evan 874 61 11ms 5 Aug 2025 643rd alexsave 874 61 10ms 13 Oct 2025 663rd dokutan 873 62 5ms 28 Apr 2025 664th NerdyMcNerd42 873 64 20ms 26 Oct 2022 664th tpasfieldERAU 873 64 23ms 14 Nov 2022 664th CheeseCake628 🇳🇴 873 64 23ms 6 Jan 2023 664th adamnielson42 🇺🇸 873 64 19ms 25 Apr 2023 664th nathsou 🇫🇷 873 64 22ms 2 Sep 2023 664th zwxzwxzwx21 873 64 24ms 30 Jan 2024 664th steffan-polygolf 873 64 21ms 8 Mar 2024 664th Jacob385 873 64 61ms 4 Apr 2024 664th gallium-gonzollium 873 64 28ms 26 Aug 2024 673rd Shanethegamer 🇺🇸 873 66 172ms 4 May 2022 673rd scpchicken 🇵🇼 873 66 254ms 5 May 2022 673rd sisyphus-ppcg 🇦🇺 873 66 174ms 6 May 2022 673rd Natanaelel 🇸🇪 873 66 144ms 15 Jun 2022 673rd Z-snails 873 66 254ms 27 Feb 2023 673rd Jeremy-Stafford 873 66 258ms 27 Feb 2023 673rd alomiF 873 66 293ms 1 Sep 2023 673rd btnlq 873 66 145ms 17 Oct 2023 681st johnnythedoggie 873 72 87ms 13 May 2022 681st kaascevich 873 72 90ms 8 Jul 2025 683rd DialFrost 🇸🇬 873 73 90ms 3 Jun 2025 684th inventshah 873 97 57ms 6 May 2022 684th roupiq 🇵🇱 873 97 55ms 22 Nov 2023 684th emgordon154 873 97 54ms 20 hours ago 687th HPWiz 🇳🇿 872 49 247ms 4 May 2022 687th JayXon 🇺🇸 872 49 237ms 5 May 2022 687th Steffan153 🇫🇮 872 49 247ms 10 Dec 2022 687th ovs-code 🇩🇪 872 49 425ms 24 Oct 2023 687th sean-niemann 🇺🇸 872 49 271ms 12 Jul 2024 692nd DialFrost 🇸🇬 872 86 40ms 24 Oct 2024 692nd stefangimmillaro 872 86 39ms 14 Jan 2025 694th c0d3-4-F00d 🇩🇪 872 89 368ms 5 May 2022 694th fkantelberg 872 89 407ms 15 Jul 2023 694th bac0id 872 89 374ms 26 Sep 2023 694th TRexOnGit 872 89 432ms 16 Feb 2024 698th janbehrens 🇩🇪 872 90 442ms 21 Apr 2023 698th Yewzir 🇧🇪 872 90 426ms 22 Apr 2023 698th Ripick 872 90 439ms 27 Nov 2024 698th emgordon154 872 90 368ms 10 Dec 2025 702nd emgordon154 872 96 104ms 3 Dec 2025 703rd MeWhenI 🇻🇦 872 109 270ms 9 Feb 2023 704th GolfingSuccess 🇬🇷 870 71 2ms 5 May 2022 704th emplv 🇱🇻 870 71 2ms 5 May 2022 704th JayXon 🇺🇸 870 71 2ms 7 May 2022 704th m-tkach 🇺🇦 870 71 2ms 15 May 2022 704th nwellnhof 🇩🇪 870 71 2ms 5 Jun 2022 704th Irratix 🇳🇱 870 71 2ms 13 Jun 2022 704th michael-pruglo 🇺🇦 870 71 2ms 13 Jul 2022 704th stefangimmillaro 870 71 2ms 2 Jun 2023 704th kkoenig 870 71 2ms 21 Dec 2023 704th JohandeRuiter 🇳🇱 870 71 2ms 14 Sep 2024 704th masinag 🇮🇹 870 71 2ms 6 Oct 2024 715th AlephSquirrel 870 80 12ms 20 Apr 2023 715th ashtraypettingzoo 🇺🇸 870 80 15ms 1 Apr 2024 717th dokutan 868 82 21ms 1 Jul 2024 718th nwellnhof 🇩🇪 867 53 6ms 4 May 2022 718th GrayJoKing 🇦🇺 867 53 7ms 6 May 2022 720th albanian-laundromat 867 73 557ms 16 Dec 2025 First Prev 641–720 of 3,546 Next Last