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 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 Calendar 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 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 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 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 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 Calendar 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 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 Bytes Time Submitted 444th Demonarchet 797 79 19ms 18 Apr 2023 444th dtaylor0 797 79 18ms 23 May 2023 444th bac0id 797 79 18ms 26 Sep 2023 444th neonchickens 797 79 26ms 6 Oct 2023 444th MWI-polygolf 797 79 18ms 6 Dec 2023 444th eddvrs 797 79 22ms 22 Dec 2023 444th tknight00 797 79 26ms 7 Mar 2024 444th thienudomsrirungruang 797 79 45ms 3 May 2024 444th IsaacAlexBarden 797 79 26ms 6 Feb 2025 444th taesungh 797 79 23ms 7 Jun 2025 444th benvreeves 797 79 20ms 25 Jul 2025 444th saturzay 797 79 25ms 19 Aug 2025 444th TransformLikeATensor 797 79 19ms 16 Oct 2025 444th tomh1012 797 79 22ms 11 hours ago 465th j-Ewan 788 80 21ms 13 May 2022 465th osmith93 788 80 33ms 14 Jun 2022 465th hjcafaroUC 788 80 24ms 21 Jun 2022 465th dankleeman 788 80 19ms 8 Aug 2022 465th dillon-duncando 788 80 21ms 4 Oct 2022 465th DrPiranoid 788 80 22ms 11 Nov 2022 465th mdnestor 788 80 22ms 23 Dec 2022 465th Edjyzod 788 80 15ms 7 Mar 2023 465th henry-von-wichert 788 80 25ms 31 Mar 2023 465th Hortaros 788 80 21ms 16 Apr 2023 465th ankeetparikh 788 80 18ms 5 May 2023 465th Neonader 788 80 24ms 9 May 2023 465th nickgza 788 80 16ms 17 Aug 2023 465th MiranDaniel 🇨🇿 788 80 25ms 30 Aug 2023 465th Fanrco 788 80 18ms 31 Aug 2023 465th nyoshe 788 80 19ms 10 Oct 2023 465th AzroyAr 788 80 26ms 28 Dec 2023 465th Alex-Huggett 🇬🇧 788 80 53ms 13 Apr 2024 465th RobertHoeh 788 80 25ms 27 May 2024 465th LorenzoDeGaspari 788 80 24ms 27 May 2024 465th AstroOrbis 788 80 25ms 7 May 2025 465th vgamula 🇺🇦 788 80 22ms 16 Jul 2025 465th imoxyg 788 80 22ms 29 Aug 2025 465th Tristanchaang 788 80 24ms 20 days ago 489th abba23 778 81 25ms 26 May 2022 489th docd 778 81 18ms 8 Aug 2022 489th Smetalo 778 81 25ms 25 Aug 2022 489th glesnick 778 81 23ms 6 Sep 2022 489th Yareeeema 778 81 22ms 3 Nov 2022 489th RandGuy 778 81 25ms 23 Nov 2022 489th GWStuart 778 81 24ms 19 Dec 2022 489th wa1ker38552 778 81 19ms 22 May 2023 489th LimaoC 778 81 22ms 11 Aug 2023 489th robertovers 778 81 25ms 2 Oct 2023 489th HanaEndUser 778 81 20ms 15 Feb 2024 489th Loag 778 81 17ms 22 Sep 2024 489th julian-hoelz 778 81 18ms 23 Sep 2024 489th JesseNoEyes 🇺🇸 778 81 19ms 4 Oct 2024 489th GoldStar184 778 81 24ms 27 Nov 2024 489th ihatethefrench 778 81 23ms 5 Jan 2025 489th csharpython 778 81 15ms 2 Aug 2025 506th Ailko 🇧🇪 768 82 26ms 12 May 2022 506th joshmoody24 768 82 25ms 12 May 2022 506th andrewgopher 768 82 18ms 25 Jun 2022 506th estomagordo 🇳🇱 768 82 24ms 26 Oct 2022 506th ThatAlo 768 82 24ms 14 Nov 2022 506th twocatsinatrenchcoat 768 82 18ms 29 Nov 2022 506th aid-f 768 82 21ms 21 Mar 2023 506th henrydukepickle 768 82 17ms 8 Dec 2023 506th amollberg 🇸🇪 768 82 23ms 3 Jan 2024 506th mrmena 🇦🇺 768 82 26ms 19 Mar 2024 506th rifatx 768 82 22ms 16 Jul 2024 506th NicoH76 768 82 18ms 24 Apr 2025 506th 0dyse 768 82 24ms 29 Apr 2025 506th gamk3 768 82 18ms 6 May 2025 506th some-function 768 82 17ms 2 Jul 2025 506th jacekwladzinski 768 82 25ms 21 days ago 522nd bonevbs 759 83 18ms 8 May 2022 522nd feherd 759 83 17ms 20 May 2022 522nd pbleich 759 83 22ms 24 Aug 2022 522nd RoscoeSmith 759 83 24ms 20 Nov 2022 First Prev 451–525 of 808 Next Last