Collatz in Python in bytes. 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 Bytes Time Submitted 211th Larspolo 851 74 19ms 25 Dec 2022 211th dcc5480 851 74 19ms 12 Jan 2023 211th Ripick 851 74 20ms 1 Feb 2023 211th m3nt0ras 🇬🇷 851 74 21ms 3 Feb 2023 211th Skwerl23 851 74 20ms 5 Feb 2023 211th frankgraziano 851 74 19ms 19 Feb 2023 211th KenanHanke 851 74 23ms 21 Feb 2023 211th DanielPeterssonAI 851 74 19ms 13 Mar 2023 211th jiaminglimjm 🇲🇾 851 74 20ms 20 Mar 2023 211th ejini6969 851 74 20ms 22 Mar 2023 211th GulgDev 851 74 20ms 22 Mar 2023 211th vrnprkh 851 74 21ms 30 Mar 2023 211th RuyiLi 851 74 20ms 1 Apr 2023 211th StardustGogeta 851 74 20ms 7 May 2023 211th zbreit 🇺🇸 851 74 20ms 7 May 2023 211th kyleclaassen 851 74 21ms 20 May 2023 211th mbittner20 851 74 20ms 27 May 2023 211th tweska 🇳🇱 851 74 19ms 5 Jun 2023 211th rollershutter 851 74 21ms 7 Jul 2023 211th 2011-Chan-Ethan 851 74 21ms 9 Jul 2023 211th cros107 🇦🇺 851 74 19ms 11 Aug 2023 211th yourlefthandman 851 74 21ms 16 Aug 2023 211th daisyyedda 851 74 20ms 17 Aug 2023 211th cesarm4 851 74 22ms 29 Aug 2023 211th midnattssol 🇸🇪 851 74 22ms 22 Sep 2023 211th lambda-abstraction 851 74 22ms 21 Oct 2023 211th levavft 851 74 19ms 26 Oct 2023 211th Buecherfresser 851 74 19ms 22 Nov 2023 211th anarconic 851 74 54ms 8 Dec 2023 211th azure-blondon 851 74 20ms 11 Dec 2023 211th kurkale6ka 851 74 22ms 20 Dec 2023 211th Dataen 851 74 19ms 10 Jan 2024 211th Anonymousellama21 851 74 22ms 14 Mar 2024 211th Bmrl7 851 74 20ms 23 Mar 2024 211th cefqrn 851 74 22ms 26 May 2024 211th drochom 851 74 21ms 18 Jun 2024 211th hiichbindermax 851 74 20ms 22 Jun 2024 211th wuzekai518 851 74 27ms 9 Jul 2024 211th cykim8811 851 74 52ms 11 Jul 2024 211th imelxr 🇮🇱 851 74 25ms 17 Aug 2024 211th EnTerr 851 74 23ms 25 Aug 2024 211th Mabeloid 🇳🇴 851 74 29ms 1 Sep 2024 211th LostSyntax21 🇬🇧 851 74 21ms 10 Sep 2024 211th Deedogg 851 74 21ms 11 Sep 2024 211th MassimoParisi 851 74 25ms 18 Sep 2024 211th lifthrasiir 🇰🇷 851 74 22ms 13 Nov 2024 211th agreegious 851 74 21ms 17 Nov 2024 211th Stockoh 🇫🇷 851 74 25ms 17 Nov 2024 211th Andrey135296 851 74 21ms 24 Nov 2024 211th TralfamadorianComedian 851 74 19ms 6 Dec 2024 211th bltnppcnt 851 74 34ms 3 Jan 2025 211th ZorblaxV 851 74 20ms 12 Jan 2025 211th yokasuretsu 851 74 19ms 13 Jan 2025 211th Artemis21 🇬🇧 851 74 21ms 17 Jan 2025 211th gdpr777 851 74 34ms 10 Feb 2025 211th Pyroan 851 74 22ms 27 Mar 2025 211th Squimbletin 851 74 20ms 19 Apr 2025 211th Kowalskiexe 🇵🇱 851 74 20ms 19 Apr 2025 211th Dandandooo 851 74 20ms 23 Apr 2025 211th khangtm123 851 74 20ms 4 May 2025 211th 40fied4t 851 74 19ms 6 May 2025 211th keelimeguy 🇺🇸 851 74 22ms 13 May 2025 211th TheZwierzLF 🇵🇱 851 74 20ms 21 May 2025 211th kbeat 🇰🇿 851 74 20ms 21 May 2025 211th LvLError 851 74 21ms 29 May 2025 211th ffelixm 851 74 20ms 3 Jun 2025 211th DoubleUynn 851 74 21ms 25 Jun 2025 211th osNiko 🇧🇷 851 74 21ms 26 Jul 2025 211th wobblybits 851 74 19ms 13 Aug 2025 211th denisfouchard 851 74 20ms 23 Aug 2025 211th Emutis 🇱🇹 851 74 25ms 23 Aug 2025 211th Matter1024 🇮🇳 851 74 21ms 11 Sep 2025 211th pauljoohyunkim 851 74 20ms 25 Sep 2025 211th joll05 🇸🇪 851 74 24ms 1 Oct 2025 211th retrohun 851 74 20ms 3 Oct 2025 211th Code-Coder-coder 851 74 22ms 12 Oct 2025 211th fvla 851 74 26ms 31 Oct 2025 211th zgialor-lab 851 74 21ms 17 Dec 2025 211th 77Tigers 851 74 22ms 8 Jan 2026 211th netfri25 🇮🇱 851 74 31ms 31 Jan 2026 First Prev 241–320 of 848 Next Last
