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 ><> ALGOL 68 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 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 ><> ALGOL 68 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 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 388th nayakrujul 750 76 20ms 3 Jan 2023 388th CatsAreFluffy 750 76 26ms 18 Feb 2023 388th Schreipfelerer 750 76 27ms 9 Apr 2023 388th hm5822 750 76 27ms 22 Apr 2023 388th celiendonze 🇨🇭 750 76 27ms 5 Jul 2023 388th brochmann 🇸🇪 750 76 21ms 13 Aug 2023 388th Command-Master 750 76 36ms 2 Oct 2023 388th chartung17 750 76 21ms 17 Dec 2023 388th smokestacklightnin 🇺🇸 750 76 26ms 10 Jan 2024 388th NickTheEASDude 🇺🇸 750 76 53ms 26 Jan 2024 388th yuchuehw 750 76 26ms 2 Feb 2024 388th Azearia 750 76 26ms 26 Feb 2024 388th khavik 750 76 25ms 29 May 2024 388th Ythaenagor 750 76 22ms 5 Aug 2024 388th martion2007 750 76 50ms 9 Aug 2024 388th sjrct 750 76 26ms 10 Aug 2024 388th Mathrew2012 750 76 18ms 9 Nov 2024 388th kawrei 750 76 27ms 4 May 2025 388th mathieurodic 750 76 26ms 21 Oct 2025 388th yoikolover 750 76 23ms 11 Dec 2025 388th matricronia 750 76 27ms 24 days ago 388th RodAlc24 🇪🇸 750 76 20ms 7 hours ago 423rd cooljoseph1 740 77 24ms 6 May 2022 423rd krcs 🇵🇱 740 77 22ms 11 May 2022 423rd kenballus 740 77 24ms 13 Jul 2022 423rd 104210 740 77 25ms 29 Jul 2022 423rd andre-de-lorde 740 77 21ms 1 Sep 2022 423rd zstephe 740 77 26ms 2 Dec 2022 423rd badboj40 740 77 24ms 27 Dec 2022 423rd henrytranter 740 77 26ms 11 Jan 2023 423rd DragonaireM 740 77 22ms 6 Feb 2023 423rd Ty-Cyr 740 77 19ms 14 Jul 2023 423rd camieac 🇬🇧 740 77 23ms 14 Jul 2023 423rd MisterrLuck 740 77 23ms 7 Sep 2023 423rd alexjurkiewicz 🇦🇺 740 77 20ms 7 Nov 2023 423rd askipio 740 77 23ms 22 Nov 2023 423rd enbyte 740 77 19ms 9 Dec 2023 423rd trinityy-7 740 77 24ms 17 Dec 2023 423rd PyryL 🇫🇮 740 77 20ms 23 Aug 2024 423rd CyberTapir 740 77 24ms 27 Aug 2024 423rd junten1 740 77 23ms 20 Oct 2024 423rd croc54 740 77 26ms 24 Dec 2024 423rd za3k 740 77 24ms 3 Jun 2025 423rd j-zhang43 740 77 23ms 17 Nov 2025 445th AGoyet 731 78 25ms 29 Jul 2022 445th RYNO8 731 78 23ms 16 Aug 2022 445th TheCod-r 🇦🇶 731 78 27ms 28 Sep 2022 445th Marthe-CC 731 78 22ms 9 Oct 2022 445th Wildst 731 78 19ms 2 Nov 2022 445th nmgetahun 731 78 22ms 4 Dec 2022 445th Techdude01 731 78 24ms 13 Dec 2022 445th tvcv901 731 78 19ms 22 Mar 2023 445th oceko 731 78 21ms 24 Mar 2023 445th yoyoyonono 731 78 26ms 15 May 2023 445th Nic0M 731 78 22ms 13 Aug 2023 445th ssbhatt4321 731 78 25ms 14 Oct 2023 445th wyarde 731 78 19ms 7 Nov 2023 445th ItsEthanDev 731 78 19ms 24 Dec 2023 445th adamreidsmith 731 78 26ms 16 Feb 2024 445th DGipe 731 78 22ms 13 May 2024 445th cyxv 731 78 27ms 2 Aug 2024 445th Europe2048 731 78 19ms 24 Nov 2024 445th GeneralFabian 731 78 27ms 14 Dec 2024 445th skaravind 731 78 20ms 19 Jan 2026 445th samuel-thesing 🇩🇪 731 78 24ms 24 days ago 466th kevdah 722 79 21ms 27 May 2022 466th jacklynnepenick 722 79 20ms 22 Jun 2022 466th james-downey 722 79 28ms 9 Jul 2022 466th andre-lameirinhas 🇵🇹 722 79 23ms 26 Jul 2022 466th hamsterskywalker 722 79 21ms 7 Sep 2022 466th Pena86 722 79 26ms 14 Sep 2022 466th hymanimy 722 79 27ms 24 Nov 2022 466th Demonarchet 722 79 19ms 18 Apr 2023 466th dtaylor0 722 79 20ms 23 May 2023 466th neonchickens 722 79 26ms 6 Oct 2023 466th MWI-polygolf 722 79 20ms 6 Dec 2023 466th eddvrs 722 79 22ms 22 Dec 2023 466th tknight00 722 79 26ms 7 Mar 2024 466th thienudomsrirungruang 722 79 48ms 3 May 2024 466th IsaacAlexBarden 722 79 25ms 6 Feb 2025 First Prev 401–480 of 827 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