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 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 383rd brochmann 🇸🇪 750 76 21ms 13 Aug 2023 383rd Command-Master 750 76 35ms 2 Oct 2023 383rd chartung17 750 76 20ms 17 Dec 2023 383rd smokestacklightnin 🇺🇸 750 76 26ms 10 Jan 2024 383rd NickTheEASDude 🇺🇸 750 76 51ms 26 Jan 2024 383rd yuchuehw 750 76 25ms 2 Feb 2024 383rd Azearia 750 76 26ms 26 Feb 2024 383rd khavik 750 76 28ms 29 May 2024 383rd Ythaenagor 750 76 23ms 5 Aug 2024 383rd martion2007 750 76 49ms 9 Aug 2024 383rd sjrct 750 76 25ms 10 Aug 2024 383rd Mathrew2012 750 76 16ms 9 Nov 2024 383rd kawrei 750 76 29ms 4 May 2025 383rd mathieurodic 750 76 27ms 21 Oct 2025 383rd yoikolover 750 76 23ms 11 Dec 2025 416th cooljoseph1 740 77 23ms 6 May 2022 416th krcs 🇵🇱 740 77 21ms 11 May 2022 416th kenballus 740 77 22ms 13 Jul 2022 416th 104210 740 77 22ms 29 Jul 2022 416th andre-de-lorde 740 77 21ms 1 Sep 2022 416th zstephe 740 77 24ms 2 Dec 2022 416th badboj40 740 77 23ms 27 Dec 2022 416th henrytranter 740 77 27ms 11 Jan 2023 416th DragonaireM 740 77 23ms 6 Feb 2023 416th Ty-Cyr 740 77 18ms 14 Jul 2023 416th camieac 🇬🇧 740 77 21ms 14 Jul 2023 416th MisterrLuck 740 77 22ms 7 Sep 2023 416th alexjurkiewicz 🇦🇺 740 77 19ms 7 Nov 2023 416th askipio 740 77 23ms 22 Nov 2023 416th enbyte 740 77 19ms 9 Dec 2023 416th trinityy-7 740 77 23ms 17 Dec 2023 416th PyryL 🇫🇮 740 77 20ms 23 Aug 2024 416th CyberTapir 740 77 23ms 27 Aug 2024 416th junten1 740 77 26ms 20 Oct 2024 416th croc54 740 77 23ms 24 Dec 2024 416th za3k 740 77 23ms 3 Jun 2025 416th j-zhang43 740 77 19ms 17 Nov 2025 438th AGoyet 731 78 22ms 29 Jul 2022 438th RYNO8 731 78 21ms 16 Aug 2022 438th TheCod-r 🇦🇶 731 78 25ms 28 Sep 2022 438th Marthe-CC 731 78 23ms 9 Oct 2022 438th Wildst 731 78 20ms 2 Nov 2022 438th nmgetahun 731 78 22ms 4 Dec 2022 438th Techdude01 731 78 26ms 13 Dec 2022 438th tvcv901 731 78 23ms 22 Mar 2023 438th oceko 731 78 19ms 24 Mar 2023 438th yoyoyonono 731 78 25ms 15 May 2023 438th Nic0M 731 78 18ms 13 Aug 2023 438th ssbhatt4321 731 78 23ms 14 Oct 2023 438th wyarde 731 78 19ms 7 Nov 2023 438th ItsEthanXYZ 731 78 19ms 24 Dec 2023 438th adamreidsmith 731 78 25ms 16 Feb 2024 438th DGipe 731 78 22ms 13 May 2024 438th cyxv 731 78 24ms 2 Aug 2024 438th Europe2048 731 78 19ms 24 Nov 2024 438th GeneralFabian 731 78 25ms 14 Dec 2024 457th kevdah 722 79 24ms 27 May 2022 457th jacklynnepenick 722 79 17ms 22 Jun 2022 457th james-downey 722 79 25ms 9 Jul 2022 457th andre-lameirinhas 🇵🇹 722 79 22ms 26 Jul 2022 457th hamsterskywalker 722 79 19ms 7 Sep 2022 457th Pena86 722 79 25ms 14 Sep 2022 457th hymanimy 722 79 26ms 24 Nov 2022 457th Demonarchet 722 79 19ms 18 Apr 2023 457th dtaylor0 722 79 20ms 23 May 2023 457th neonchickens 722 79 25ms 6 Oct 2023 457th MWI-polygolf 722 79 19ms 6 Dec 2023 457th eddvrs 722 79 22ms 22 Dec 2023 457th tknight00 722 79 26ms 7 Mar 2024 457th thienudomsrirungruang 722 79 44ms 3 May 2024 457th IsaacAlexBarden 722 79 23ms 6 Feb 2025 457th taesungh 722 79 24ms 7 Jun 2025 457th benvreeves 722 79 20ms 25 Jul 2025 457th saturzay 722 79 25ms 19 Aug 2025 457th tomh1012 722 79 23ms 3 Dec 2025 476th j-Ewan 713 80 20ms 13 May 2022 476th osmith93 713 80 32ms 14 Jun 2022 476th hjcafaroUC 713 80 25ms 21 Jun 2022 476th dankleeman 713 80 20ms 8 Aug 2022 476th dillon-duncando 713 80 24ms 4 Oct 2022 First Prev 401–480 of 815 Next Last
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