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 124th CutSandstone 814 70 19ms 4 Feb 2025 124th xsot 🇸🇬 814 70 22ms 3 May 2025 124th smilesformiles3 814 70 19ms 14 Jun 2025 124th KasperKivimaeki 🇫🇮 814 70 19ms 30 Jun 2025 124th adaGrad1 814 70 18ms 10 Aug 2025 124th EthanJantz 814 70 18ms 10 Aug 2025 124th qpwoeirut 814 70 16ms 10 Aug 2025 124th intgrah 814 70 18ms 23 Sep 2025 124th ryyyn 🇺🇸 814 70 18ms 29 Oct 2025 124th bzijlema 🇳🇱 814 70 20ms 3 Dec 2025 171st StefanHabel 🇨🇦 803 71 18ms 29 Nov 2022 171st nstearns96 🇬🇧 803 71 18ms 11 Jan 2023 171st lelbal 803 71 19ms 26 Aug 2025 171st HETHAT 🇩🇿 803 71 23ms 23 Sep 2025 171st 09cf 803 71 17ms 18 Nov 2025 171st blaztoma 🇱🇹 803 71 24ms 25 Nov 2025 171st Languag3 803 71 23ms 27 days ago 178th scpchicken 🇵🇼 792 72 19ms 4 May 2022 178th sultan 792 72 17ms 6 Jun 2022 178th BlankSpruce 792 72 23ms 9 Sep 2022 178th ValentinCassayre 792 72 21ms 8 Oct 2022 178th mathb0y512 792 72 21ms 1 Dec 2022 178th NoahBolohan 🇨🇦 792 72 21ms 28 Feb 2023 178th Kacarott 🇦🇺 792 72 16ms 24 Mar 2023 178th Fracture17 792 72 20ms 8 Apr 2023 178th ayushdewan 792 72 23ms 7 May 2023 178th cingulataluke 792 72 18ms 27 Aug 2023 178th PeterTillema 🇳🇱 792 72 24ms 17 Oct 2023 178th Glinte 792 72 24ms 11 Dec 2023 178th nanatsu8 792 72 24ms 11 May 2024 178th thej10n 792 72 18ms 12 Jun 2024 178th tobeannouncd 792 72 16ms 25 Apr 2025 178th YAJUE114514 792 72 16ms 15 Aug 2025 194th AdamHe17 781 73 20ms 31 May 2022 194th AliceFord 781 73 19ms 2 Jun 2022 194th Natanaelel 🇸🇪 781 73 16ms 16 Jun 2022 194th marcin7Cd 781 73 19ms 27 Jun 2022 194th vhoulbreque 🇫🇷 781 73 19ms 18 Aug 2022 194th tkr-sh 🇰🇵 781 73 20ms 8 Sep 2022 194th jroscoe5 781 73 19ms 15 Sep 2022 194th OhmNomNom 781 73 23ms 7 Oct 2022 194th 0-4849 781 73 20ms 1 Nov 2022 194th M0PKOBKA 781 73 23ms 19 Dec 2022 194th calumacutt 781 73 22ms 19 Dec 2022 194th thehylian 781 73 20ms 2 Jan 2023 194th fynnkroeger 781 73 22ms 6 Jan 2023 194th hunt-g 781 73 19ms 4 Feb 2023 194th jmerle 🇳🇱 781 73 19ms 16 Feb 2023 194th TaserTheFox 🇺🇸 781 73 24ms 14 Mar 2023 194th pinguicula 781 73 19ms 6 Apr 2023 194th TheoKeller1 781 73 23ms 11 Jun 2023 194th Mikey-Beep 🇬🇧 781 73 19ms 31 Aug 2023 194th eiburns 781 73 23ms 9 Oct 2023 194th htareque 781 73 19ms 13 Oct 2023 194th wearsunscreen 781 73 21ms 18 Oct 2023 194th Grrisly 781 73 19ms 10 Nov 2023 194th m42km 781 73 21ms 11 Nov 2023 194th GeneralPoxter 781 73 18ms 7 Dec 2023 194th logvp 781 73 23ms 12 Jan 2024 194th JoaoFelipe3 781 73 21ms 13 Jan 2024 194th ehulinsky 🇺🇸 781 73 20ms 16 Feb 2024 194th Lewenhaupt 781 73 19ms 23 Feb 2024 194th stertooy 🇧🇪 781 73 18ms 9 Jun 2024 194th jipsong 🇩🇪 781 73 20ms 23 Jul 2024 194th mattyhempstead 781 73 20ms 6 Oct 2024 194th wh3n3v3r 🇨🇿 781 73 19ms 18 Nov 2024 194th klixel 🇨🇦 781 73 20ms 18 Nov 2024 194th tjwrenn 781 73 19ms 10 Dec 2024 194th nullie 781 73 19ms 19 Dec 2024 194th maxgodfrey2004 🇨🇦 781 73 22ms 13 Feb 2025 194th andrewjc2000 781 73 20ms 23 Feb 2025 194th Bulmenisaurus 781 73 21ms 2 Mar 2025 194th souta-1326 781 73 19ms 1 Apr 2025 194th BenjaminHGong 781 73 20ms 26 May 2025 194th FEZfan 🇦🇺 781 73 19ms 11 Jul 2025 194th wuduculfre 781 73 19ms 28 Jul 2025 194th BREMAUCY 🇫🇷 781 73 19ms 24 Aug 2025 194th FortuiteMan 🇫🇷 781 73 21ms 28 Sep 2025 194th miaoaixuan 781 73 22ms 30 Sep 2025 194th Lv0Sys 🇵🇱 781 73 23ms 25 days ago First Prev 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