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 639th TechNolaByte 874 61 11ms 6 Jul 2022 639th Heathcorp 🇦🇺 874 61 11ms 17 Jul 2022 639th C0de5mith 🇺🇸 874 61 11ms 3 Aug 2022 639th sebipopa 🇷🇴 874 61 12ms 18 Aug 2022 639th moikaturns 🇬🇧 874 61 10ms 25 Sep 2022 639th FlorianCassayre 🇫🇷 874 61 10ms 27 Sep 2022 639th Mazn3k 874 61 11ms 1 Feb 2023 639th tvcv901 874 61 12ms 22 Mar 2023 639th unfinishedprogram 874 61 12ms 19 Jul 2023 639th snoozingnewt 🇨🇦 874 61 10ms 23 Sep 2023 639th funnyboy-roks 874 61 11ms 9 May 2024 639th bac0id 874 61 13ms 29 Jun 2024 639th madex 🇩🇪 874 61 11ms 9 Jul 2024 639th FortuiteMan 🇫🇷 874 61 12ms 10 Oct 2024 639th RobertHoeh 874 61 10ms 5 Apr 2025 639th LvLError 874 61 10ms 29 May 2025 639th miles-evan 874 61 11ms 5 Aug 2025 639th alexsave 874 61 10ms 13 Oct 2025 659th dokutan 873 62 5ms 28 Apr 2025 660th NerdyMcNerd42 873 64 19ms 26 Oct 2022 660th tpasfieldERAU 873 64 23ms 14 Nov 2022 660th CheeseCake628 🇳🇴 873 64 22ms 6 Jan 2023 660th adamnielson42 🇺🇸 873 64 19ms 25 Apr 2023 660th nathsou 🇫🇷 873 64 19ms 2 Sep 2023 660th zwxzwxzwx21 873 64 25ms 30 Jan 2024 660th steffan-polygolf 873 64 19ms 8 Mar 2024 660th Jacob385 873 64 57ms 4 Apr 2024 660th gallium-gonzollium 873 64 28ms 26 Aug 2024 669th Shanethegamer 🇺🇸 873 66 172ms 4 May 2022 669th scpchicken 🇵🇼 873 66 254ms 5 May 2022 669th sisyphus-ppcg 🇦🇺 873 66 174ms 6 May 2022 669th Natanaelel 🇸🇪 873 66 144ms 15 Jun 2022 669th Z-snails 873 66 254ms 27 Feb 2023 669th Jeremy-Stafford 873 66 258ms 27 Feb 2023 669th alomiF 873 66 293ms 1 Sep 2023 669th btnlq 873 66 145ms 17 Oct 2023 677th johnnythedoggie 873 72 87ms 13 May 2022 677th kaascevich 873 72 90ms 8 Jul 2025 679th DialFrost 🇸🇬 873 73 90ms 3 Jun 2025 680th HPWiz 🇳🇿 872 49 247ms 4 May 2022 680th JayXon 🇺🇸 872 49 237ms 5 May 2022 680th Steffan153 🇫🇮 872 49 247ms 10 Dec 2022 680th ovs-code 🇩🇪 872 49 425ms 24 Oct 2023 680th sean-niemann 🇺🇸 872 49 271ms 12 Jul 2024 685th DialFrost 🇸🇬 872 86 40ms 24 Oct 2024 685th stefangimmillaro 872 86 39ms 14 Jan 2025 687th c0d3-4-F00d 🇩🇪 872 89 368ms 5 May 2022 687th fkantelberg 872 89 407ms 15 Jul 2023 687th bac0id 872 89 374ms 26 Sep 2023 687th TRexOnGit 872 89 432ms 16 Feb 2024 691st janbehrens 🇩🇪 872 90 442ms 21 Apr 2023 691st Yewzir 🇧🇪 872 90 426ms 22 Apr 2023 691st Ripick 872 90 439ms 27 Nov 2024 691st emgordon154 872 90 368ms 10 Dec 2025 695th emgordon154 872 96 104ms 3 Dec 2025 696th inventshah 872 97 57ms 6 May 2022 696th roupiq 🇵🇱 872 97 55ms 22 Nov 2023 698th MeWhenI 🇻🇦 872 109 247ms 9 Feb 2023 699th AlephSquirrel 870 80 12ms 20 Apr 2023 699th ashtraypettingzoo 🇺🇸 870 80 15ms 1 Apr 2024 701st GolfingSuccess 🇬🇷 869 71 2ms 5 May 2022 701st emplv 🇱🇻 869 71 2ms 5 May 2022 701st JayXon 🇺🇸 869 71 2ms 7 May 2022 701st m-tkach 🇺🇦 869 71 2ms 15 May 2022 701st nwellnhof 🇩🇪 869 71 2ms 5 Jun 2022 701st Irratix 🇳🇱 869 71 2ms 13 Jun 2022 701st michael-pruglo 🇺🇦 869 71 2ms 13 Jul 2022 701st stefangimmillaro 869 71 2ms 2 Jun 2023 701st kkoenig 869 71 2ms 21 Dec 2023 701st JohandeRuiter 🇳🇱 869 71 2ms 14 Sep 2024 701st masinag 🇮🇹 869 71 2ms 6 Oct 2024 712th dokutan 868 82 21ms 1 Jul 2024 713th nwellnhof 🇩🇪 867 53 6ms 4 May 2022 713th GrayJoKing 🇦🇺 867 53 7ms 6 May 2022 715th albanian-laundromat 867 73 557ms 16 Dec 2025 716th dieggsy 867 97 28ms 8 Oct 2024 717th ovs-code 🇩🇪 867 133 42ms 8 Jul 2024 718th Andriamanitra 🇫🇮 866 54 41ms 21 Jul 2022 718th jared-hughes 866 54 37ms 12 Sep 2022 718th OhmNomNom 866 54 37ms 7 Oct 2022 First Prev 641–720 of 3,513 Next Last