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 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 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 Rectangle Fill 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 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 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 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 Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 641st StoverGitHub 633 90 20ms 16 Jun 2022 641st jamespeilunli 633 90 23ms 4 Jul 2022 641st TrentGlimp 633 90 20ms 3 Sep 2022 641st Ugoran 633 90 20ms 19 Nov 2022 641st PATTRIM 633 90 17ms 5 Jan 2023 641st charliegaming 633 90 19ms 3 Oct 2023 641st lhulinsky 633 90 20ms 22 Oct 2024 641st bthalheim 633 90 21ms 6 Dec 2024 641st SinArieh 633 90 25ms 4 May 2025 641st islptng 633 90 23ms 7 Jul 2025 641st Mr-McChicken 633 90 17ms 4 Oct 2025 641st NoneTheFewer 633 90 18ms 4 Dec 2025 653rd AbelPelser 626 91 22ms 3 Jul 2022 653rd Seis 626 91 19ms 9 Dec 2022 653rd r-i-c-e 626 91 20ms 9 Jul 2023 653rd joshcors 626 91 17ms 30 Jun 2024 653rd resoNathan 626 91 16ms 9 Jul 2024 653rd jameswmccarty 626 91 20ms 24 Sep 2024 653rd hamilton-bonds 626 91 17ms 12 Nov 2024 653rd Wonamm 626 91 29ms 14 Feb 2025 661st TimLeffke 620 92 22ms 17 Aug 2022 661st Rythoka 620 92 15ms 17 Oct 2022 661st UriyaBA 620 92 17ms 19 Mar 2023 661st VladislavGitter 🇪🇸 620 92 19ms 14 Nov 2023 661st ridingqwerty 🇺🇸 620 92 16ms 22 Dec 2023 661st Thonoton 620 92 19ms 1 Feb 2024 661st OCNeve 620 92 20ms 17 Jun 2024 661st themoonisacheese 620 92 24ms 25 Feb 2025 661st BabySharkHi 620 92 23ms 22 Apr 2025 661st arjunarya1 620 92 16ms 28 Aug 2025 661st TJK-S 620 92 19ms 10 Oct 2025 672nd Bananapants22 613 93 26ms 4 Sep 2022 672nd jaxmattfair 🇺🇸 613 93 19ms 10 Jan 2023 672nd fenix-bear 613 93 20ms 18 Nov 2023 672nd epic-programmer-guy 613 93 22ms 22 Dec 2023 672nd brimstonetrader 613 93 24ms 18 Nov 2024 672nd HunterC14 613 93 26ms 10 Feb 2026 678th atazzam 🇺🇸 606 94 17ms 18 May 2022 678th rohangpta 606 94 17ms 8 Aug 2022 678th shinylego 606 94 19ms 14 Sep 2022 678th sgaltair 606 94 20ms 4 Nov 2022 678th TotoAJ 606 94 20ms 15 Dec 2023 678th Gusic06 606 94 19ms 6 May 2024 678th kyleyarwood 606 94 21ms 6 Oct 2024 678th jj0786-cell 606 94 20ms 1 Apr 2025 678th griffinschreiber 606 94 20ms 1 Apr 2025 678th o800 606 94 20ms 17 Nov 2025 688th felixcroc 600 95 19ms 30 Mar 2023 688th Pyro569 600 95 18ms 4 Jul 2023 688th rm-rf-innocence 600 95 20ms 19 Dec 2023 688th Bit125 600 95 19ms 30 Jan 2024 688th aalec 600 95 21ms 25 Apr 2024 688th strogor 600 95 20ms 13 Jun 2025 688th cthierfelder 🇲🇨 600 95 20ms 17 Jul 2025 688th ThomasDelepine 600 95 21ms 29 Oct 2025 696th karhuthebear 594 96 24ms 9 May 2022 696th qwjhvbxi 594 96 21ms 6 Feb 2024 696th alfonsoalves 594 96 20ms 21 Jul 2024 696th jeff-re 594 96 14ms 1 Apr 2025 700th a-penton 588 97 17ms 22 Sep 2022 700th jrbud 588 97 19ms 6 Jan 2024 700th befoster 588 97 22ms 22 Feb 2024 700th joshua-el-samalouti 🇩🇪 588 97 19ms 26 May 2024 700th luca1339 588 97 20ms 10 Jun 2024 705th lukemalek 582 98 14ms 10 Oct 2022 705th UltimateGuy0987 582 98 20ms 14 Oct 2022 705th TheLazySquid 582 98 21ms 20 Dec 2022 705th StronkCheese 🇺🇸 582 98 20ms 13 Mar 2023 705th Anthony-Williams-06 582 98 27ms 17 Oct 2023 705th abcdhhhh 582 98 15ms 27 Aug 2024 705th OSYCh314 🇦🇺 582 98 26ms 16 Nov 2024 705th cole-wilson 582 98 19ms 9 Dec 2024 705th Akilles1 582 98 20ms 15 May 2025 705th Hyperoplex145 582 98 21ms 11 Nov 2025 715th LukeRichardson-dev 576 99 15ms 12 May 2022 715th Tagfox 576 99 20ms 18 Jul 2022 715th gabrielsqw 576 99 23ms 24 Oct 2023 715th sciencedjinn 576 99 19ms 8 Nov 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