Collatz in Python 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 195th Lv0Sys 🇵🇱 781 73 25ms 7 Dec 2025 195th zacharysfrazee 781 73 21ms 26 days ago 195th bpharaldsson 781 73 20ms 2 hours ago 244th TobyBoyne 🇬🇧 770 74 23ms 4 May 2022 244th RDShah 770 74 21ms 6 May 2022 244th Indivicivet 770 74 20ms 9 May 2022 244th CedricGebistorf 770 74 20ms 9 May 2022 244th ophact 770 74 22ms 11 May 2022 244th ImpressedByRocks 770 74 20ms 17 May 2022 244th LHuitre 770 74 20ms 2 Jun 2022 244th neihousaigaai 770 74 20ms 8 Jun 2022 244th rowboat1 770 74 20ms 10 Jun 2022 244th inverseLorentz 🇦🇺 770 74 20ms 13 Jun 2022 244th clementblaudeau 770 74 25ms 29 Jun 2022 244th adoxography 770 74 20ms 13 Jul 2022 244th Attero 🇸🇪 770 74 20ms 20 Jul 2022 244th Heathcorp 🇦🇺 770 74 19ms 27 Jul 2022 244th jfallon1997 770 74 20ms 11 Aug 2022 244th VictorFordham 770 74 24ms 26 Aug 2022 244th georgehulme 770 74 19ms 1 Sep 2022 244th smartiel 770 74 21ms 15 Sep 2022 244th trist224 🇫🇷 770 74 21ms 21 Sep 2022 244th Kloppermand 🇩🇰 770 74 22ms 7 Oct 2022 244th knutae 🇳🇴 770 74 23ms 9 Oct 2022 244th Troon 770 74 21ms 14 Oct 2022 244th MaxElf999 770 74 22ms 14 Oct 2022 244th SniperSmiley 🇺🇸 770 74 20ms 6 Dec 2022 244th elephantpanda 770 74 21ms 10 Dec 2022 244th ArthurBond 770 74 19ms 19 Dec 2022 244th Larspolo 770 74 20ms 25 Dec 2022 244th dcc5480 770 74 19ms 12 Jan 2023 244th Ripick 770 74 20ms 1 Feb 2023 244th m3nt0ras 🇬🇷 770 74 19ms 3 Feb 2023 244th Skwerl23 770 74 20ms 5 Feb 2023 244th frankgraziano 770 74 18ms 19 Feb 2023 244th KenanHanke 770 74 28ms 21 Feb 2023 244th DanielPeterssonAI 770 74 20ms 13 Mar 2023 244th jiaminglimjm 🇲🇾 770 74 20ms 20 Mar 2023 244th ejini6969 770 74 18ms 22 Mar 2023 244th GulgDev 770 74 19ms 22 Mar 2023 244th vrnprkh 770 74 19ms 30 Mar 2023 244th RuyiLi 770 74 21ms 1 Apr 2023 244th StardustGogeta 770 74 19ms 7 May 2023 244th zbreit 🇺🇸 770 74 20ms 7 May 2023 244th kyleclaassen 770 74 20ms 20 May 2023 244th mbittner20 770 74 20ms 27 May 2023 244th tweska 🇳🇱 770 74 20ms 5 Jun 2023 244th cros107 🇦🇺 770 74 21ms 11 Aug 2023 244th yourlefthandman 770 74 20ms 16 Aug 2023 244th daisyyedda 770 74 22ms 17 Aug 2023 244th cesarm4 770 74 19ms 29 Aug 2023 244th midnattssol 🇸🇪 770 74 20ms 22 Sep 2023 244th lambda-abstraction 770 74 21ms 21 Oct 2023 244th levavft 770 74 20ms 26 Oct 2023 244th Buecherfresser 770 74 19ms 22 Nov 2023 244th anarconic 770 74 50ms 8 Dec 2023 244th azure-blondon 770 74 21ms 11 Dec 2023 244th kurkale6ka 770 74 22ms 20 Dec 2023 244th Anonymousellama21 770 74 22ms 14 Mar 2024 244th Bmrl7 770 74 20ms 23 Mar 2024 244th cefqrn 770 74 22ms 26 May 2024 244th drochom 770 74 19ms 18 Jun 2024 244th hiichbindermax 770 74 19ms 22 Jun 2024 244th madex 🇩🇪 770 74 20ms 9 Jul 2024 244th cykim8811 770 74 50ms 11 Jul 2024 244th imelxr 🇮🇱 770 74 25ms 17 Aug 2024 244th EnTerr 770 74 21ms 25 Aug 2024 244th Mabeloid 🇳🇴 770 74 20ms 1 Sep 2024 244th madeforlosers 770 74 19ms 5 Sep 2024 244th LostSyntax21 🇬🇧 770 74 19ms 10 Sep 2024 244th Deedogg 770 74 23ms 11 Sep 2024 244th MassimoParisi 770 74 21ms 18 Sep 2024 244th agreegious 770 74 19ms 17 Nov 2024 244th Stockoh 🇫🇷 770 74 28ms 17 Nov 2024 244th Andrey135296 770 74 22ms 24 Nov 2024 244th TralfamadorianComedian 770 74 21ms 6 Dec 2024 244th bltnppcnt 770 74 38ms 3 Jan 2025 244th ZorblaxV 770 74 22ms 12 Jan 2025 244th yokasuretsu 770 74 22ms 13 Jan 2025 244th 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