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 Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript 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 APL 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 ><> ALGOL 68 ArkScript 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 APL 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 Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 394th eshilo-draper 750 76 21ms 13 Sep 2022 394th suwat513 750 76 21ms 22 Sep 2022 394th PogLop 🇨🇿 750 76 20ms 3 Nov 2022 394th Jaydosu 750 76 23ms 14 Nov 2022 394th tails618 750 76 27ms 2 Dec 2022 394th KevinLyvers 750 76 20ms 17 Dec 2022 394th nayakrujul 750 76 20ms 3 Jan 2023 394th CatsAreFluffy 750 76 26ms 18 Feb 2023 394th Schreipfelerer 750 76 27ms 9 Apr 2023 394th hm5822 750 76 27ms 22 Apr 2023 394th celiendonze 🇨🇭 750 76 27ms 5 Jul 2023 394th brochmann 🇸🇪 750 76 21ms 13 Aug 2023 394th Command-Master 750 76 36ms 2 Oct 2023 394th chartung17 750 76 21ms 17 Dec 2023 394th smokestacklightnin 🇺🇸 750 76 26ms 10 Jan 2024 394th NickTheEASDude 🇺🇸 750 76 53ms 26 Jan 2024 394th yuchuehw 750 76 26ms 2 Feb 2024 394th Azearia 750 76 26ms 26 Feb 2024 394th khavik 750 76 25ms 29 May 2024 394th Ythaenagor 750 76 22ms 5 Aug 2024 394th martion2007 750 76 50ms 9 Aug 2024 394th sjrct 750 76 26ms 10 Aug 2024 394th Mathrew2012 750 76 18ms 9 Nov 2024 394th kawrei 750 76 27ms 4 May 2025 394th mathieurodic 750 76 26ms 21 Oct 2025 394th yoikolover 750 76 23ms 11 Dec 2025 394th matricronia 750 76 27ms 28 Jan 2026 394th muser-logiccpu 🇺🇦 750 76 25ms 24 Feb 2026 394th Ignacio6D2 750 76 19ms 26 Feb 2026 430th cooljoseph1 740 77 24ms 6 May 2022 430th krcs 🇵🇱 740 77 22ms 11 May 2022 430th kenballus 740 77 24ms 13 Jul 2022 430th 104210 740 77 25ms 29 Jul 2022 430th andre-de-lorde 740 77 21ms 1 Sep 2022 430th zstephe 740 77 26ms 2 Dec 2022 430th badboj40 740 77 24ms 27 Dec 2022 430th henrytranter 740 77 26ms 11 Jan 2023 430th DragonaireM 740 77 22ms 6 Feb 2023 430th Ty-Cyr 740 77 19ms 14 Jul 2023 430th camieac 🇬🇧 740 77 23ms 14 Jul 2023 430th MisterrLuck 740 77 23ms 7 Sep 2023 430th alexjurkiewicz 🇦🇺 740 77 20ms 7 Nov 2023 430th askipio 740 77 23ms 22 Nov 2023 430th enbyte 740 77 19ms 9 Dec 2023 430th trinityy-7 740 77 24ms 17 Dec 2023 430th PyryL 🇫🇮 740 77 20ms 23 Aug 2024 430th CyberTapir 740 77 24ms 27 Aug 2024 430th junten1 740 77 23ms 20 Oct 2024 430th croc54 740 77 26ms 24 Dec 2024 430th za3k 740 77 24ms 3 Jun 2025 430th j-zhang43 740 77 23ms 17 Nov 2025 452nd AGoyet 731 78 25ms 29 Jul 2022 452nd RYNO8 731 78 23ms 16 Aug 2022 452nd TheCod-r 🇦🇶 731 78 27ms 28 Sep 2022 452nd Marthe-CC 731 78 22ms 9 Oct 2022 452nd Wildst 731 78 19ms 2 Nov 2022 452nd nmgetahun 731 78 22ms 4 Dec 2022 452nd Techdude01 731 78 24ms 13 Dec 2022 452nd tvcv901 731 78 19ms 22 Mar 2023 452nd oceko 731 78 21ms 24 Mar 2023 452nd yoyoyonono 731 78 26ms 15 May 2023 452nd Nic0M 731 78 22ms 13 Aug 2023 452nd ssbhatt4321 731 78 25ms 14 Oct 2023 452nd wyarde 731 78 19ms 7 Nov 2023 452nd ItsEthanDev 731 78 19ms 24 Dec 2023 452nd adamreidsmith 731 78 26ms 16 Feb 2024 452nd DGipe 731 78 22ms 13 May 2024 452nd cyxv 731 78 27ms 2 Aug 2024 452nd Europe2048 731 78 19ms 24 Nov 2024 452nd GeneralFabian 731 78 27ms 14 Dec 2024 452nd skaravind 731 78 20ms 19 Jan 2026 452nd samuel-thesing 🇩🇪 731 78 24ms 28 Jan 2026 452nd SectorCorruptor 731 78 25ms 1 Mar 2026 452nd Deppyforce 731 78 17ms 19 days ago 452nd denkyuu1 731 78 21ms 5 days ago 476th kevdah 722 79 21ms 27 May 2022 476th jacklynnepenick 722 79 20ms 22 Jun 2022 476th james-downey 722 79 28ms 9 Jul 2022 476th andre-lameirinhas 🇵🇹 722 79 23ms 26 Jul 2022 476th 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