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 555th anonymaew 687 83 27ms 2 Aug 2023 555th mstang107 687 83 24ms 20 Dec 2023 555th LHLaurini 🇧🇷 687 83 19ms 26 Jun 2024 555th C0derX3 🇺🇸 687 83 22ms 18 Sep 2024 555th ComputerKWasTaken 🇺🇸 687 83 23ms 20 Jan 2025 555th Vexxter9 🇳🇱 687 83 57ms 4 Feb 2025 555th CodyKlingler 687 83 23ms 7 Feb 2025 555th OyuDays 687 83 19ms 17 Mar 2025 555th julianreece 687 83 23ms 29 Apr 2025 555th rustykitty 🇺🇸 687 83 21ms 24 Oct 2025 555th Kinkade76 687 83 26ms 4 Feb 2026 555th parthm2005 687 83 16ms 28 Feb 2026 555th Apfelvater 687 83 19ms 26 days ago 555th kitotch 687 83 22ms 14 days ago 575th Feniske 🇫🇷 679 84 20ms 7 Oct 2022 575th Eilonlif 🇮🇱 679 84 22ms 29 Mar 2023 575th mhsaul 679 84 18ms 11 Apr 2023 575th Phyisis 679 84 23ms 30 Apr 2024 575th MaxCastella 🇫🇷 679 84 23ms 11 Oct 2024 575th SURAJMITTAL 679 84 17ms 17 Dec 2024 575th simplylu 679 84 19ms 5 Jan 2025 575th WillowWispy 679 84 22ms 14 Mar 2025 575th VedJosh 679 84 26ms 3 May 2025 575th hetz2625 679 84 26ms 4 May 2025 575th ottav14 679 84 18ms 1 Dec 2025 575th benanlam 679 84 18ms 24 Dec 2025 575th pph-2203 679 84 16ms 26 Feb 2026 588th aazuspan 671 85 19ms 15 Jun 2022 588th myleopard 671 85 23ms 20 Jul 2022 588th LukasFolwarczny 🇨🇿 671 85 23ms 16 Sep 2022 588th aaardwark 671 85 21ms 1 Jun 2025 588th kmathis22 671 85 20ms 10 Sep 2025 593rd MichaelMBradley 🇨🇦 663 86 25ms 5 Jun 2022 593rd Lemonz-13223 663 86 21ms 21 Sep 2022 593rd Bodo171 663 86 24ms 24 Nov 2022 593rd shibacho 🇯🇵 663 86 19ms 25 Nov 2022 593rd Vaekor 663 86 18ms 9 Jul 2023 593rd LeoVanderSteege 663 86 17ms 18 Nov 2023 593rd Pale-Vessel 663 86 20ms 18 Dec 2023 593rd tik25 663 86 24ms 28 Mar 2024 593rd willschremmer 663 86 16ms 27 Apr 2024 593rd jamiloBBKing 663 86 25ms 27 Jan 2025 593rd AsishKunta 663 86 18ms 1 Apr 2025 593rd Hemanthred2005 663 86 18ms 1 Apr 2025 593rd Voltrifrodec 🇸🇰 663 86 23ms 19 Apr 2025 593rd lurey99 663 86 18ms 23 Apr 2025 593rd Alban-Boissard 663 86 23ms 14 Jun 2025 593rd Arkadios200 663 86 26ms 21 Sep 2025 593rd Andrey2001 663 86 27ms 27 Nov 2025 593rd Aquateraneal 🇺🇸 663 86 17ms 23 days ago 611th ToE42 655 87 18ms 19 Oct 2022 611th omri2001 655 87 19ms 19 Oct 2022 611th Skallos-s 655 87 23ms 5 Dec 2022 611th damoc1es 655 87 19ms 16 Apr 2023 611th michelebastione 🇮🇹 655 87 25ms 20 Dec 2023 611th clampcorder 655 87 16ms 24 Jan 2024 611th GitQuick 655 87 19ms 23 Feb 2024 611th EricSchraf 655 87 18ms 21 Mar 2024 611th PotatoSaladOverlord 655 87 19ms 21 May 2025 611th Ibozz91 655 87 23ms 8 Jun 2025 611th chenyuan33 655 87 22ms 21 Feb 2026 622nd Andre3582 648 88 17ms 29 Oct 2022 622nd Darknova2468 648 88 20ms 20 Nov 2022 622nd Solsticely 648 88 20ms 20 Nov 2022 622nd goGuru 648 88 20ms 21 Dec 2022 622nd msbranicky 648 88 36ms 9 Aug 2023 622nd gussy420 648 88 17ms 28 Oct 2023 622nd Shynif 648 88 20ms 21 Feb 2024 622nd asterized 648 88 19ms 24 Aug 2024 622nd hippopotam00sehead 🇨🇦 648 88 19ms 11 Sep 2024 622nd 08jne01 648 88 16ms 21 Nov 2024 622nd davidludwik2370 648 88 19ms 14 Sep 2025 622nd kasarino 648 88 19ms 14 days ago 634th lovernj 640 89 24ms 23 Aug 2022 634th Roj 640 89 21ms 20 Nov 2022 634th aeonsablaze 640 89 16ms 22 Nov 2022 634th buddyw 640 89 18ms 9 Mar 2023 634th VV1Git 640 89 19ms 28 Mar 2023 634th dranjohn 640 89 19ms 17 Sep 2023 634th ArenaGrenade 640 89 24ms 19 Feb 2024 First Prev 561–640 of 844 Next Last