Collatz in Python in bytes. Cheevos Holes Recent Holes Langs Medals Misc 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 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 Calendar Connect Four 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 Tower of Hanoi Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir 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 Erlang 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 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 Erlang 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 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 Calendar Connect Four 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 Tower of Hanoi Turtle Tutorial # Golfer Points Bytes Time Submitted 439th eddvrs 861 79 23ms 22 Dec 2023 439th tknight00 861 79 31ms 7 Mar 2024 439th thienudomsrirungruang 861 79 53ms 3 May 2024 439th IsaacAlexBarden 861 79 23ms 6 Feb 2025 439th taesungh 861 79 26ms 7 Jun 2025 439th benvreeves 861 79 28ms 25 Jul 2025 439th saturzay 861 79 25ms 19 Aug 2025 439th TransformLikeATensor 861 79 22ms 16 days ago 459th j-Ewan 850 80 21ms 13 May 2022 459th osmith93 850 80 38ms 14 Jun 2022 459th hjcafaroUC 850 80 30ms 21 Jun 2022 459th dankleeman 850 80 19ms 8 Aug 2022 459th dillon-duncando 850 80 23ms 4 Oct 2022 459th DrPiranoid 850 80 26ms 11 Nov 2022 459th mdnestor 850 80 24ms 23 Dec 2022 459th Edjyzod 850 80 17ms 7 Mar 2023 459th henry-von-wichert 850 80 26ms 31 Mar 2023 459th Hortaros 850 80 25ms 16 Apr 2023 459th ankeetparikh 850 80 21ms 5 May 2023 459th Neonader 850 80 26ms 9 May 2023 459th nickgza 850 80 17ms 17 Aug 2023 459th MiranDaniel 🇨🇿 850 80 27ms 30 Aug 2023 459th Fanrco 850 80 20ms 31 Aug 2023 459th nyoshe 850 80 21ms 10 Oct 2023 459th AzroyAr 850 80 28ms 28 Dec 2023 459th Alex-Huggett 🇬🇧 850 80 61ms 13 Apr 2024 459th RobertHoeh 850 80 27ms 27 May 2024 459th LorenzoDeGaspari 850 80 24ms 27 May 2024 459th AstroOrbis 850 80 24ms 7 May 2025 459th vgamula 🇺🇦 850 80 25ms 16 Jul 2025 459th imoxyg 850 80 25ms 29 Aug 2025 482nd abba23 840 81 26ms 26 May 2022 482nd docd 840 81 30ms 8 Aug 2022 482nd Smetalo 840 81 28ms 25 Aug 2022 482nd glesnick 840 81 30ms 6 Sep 2022 482nd Yareeeema 840 81 29ms 3 Nov 2022 482nd RandGuy 840 81 26ms 23 Nov 2022 482nd GWStuart 840 81 27ms 19 Dec 2022 482nd wa1ker38552 840 81 20ms 22 May 2023 482nd LimaoC 840 81 30ms 11 Aug 2023 482nd robertovers 840 81 31ms 2 Oct 2023 482nd HanaEndUser 840 81 18ms 15 Feb 2024 482nd Loag 840 81 19ms 22 Sep 2024 482nd julian-hoelz 840 81 17ms 23 Sep 2024 482nd JesseNoEyes 🇺🇸 840 81 19ms 4 Oct 2024 482nd GoldStar184 840 81 25ms 27 Nov 2024 482nd ihatethefrench 840 81 30ms 5 Jan 2025 482nd csharpython 840 81 17ms 2 Aug 2025 499th Ailko 🇧🇪 829 82 28ms 12 May 2022 499th joshmoody24 829 82 26ms 12 May 2022 499th andrewgopher 829 82 20ms 25 Jun 2022 499th estomagordo 🇳🇱 829 82 25ms 26 Oct 2022 499th ThatAlo 829 82 25ms 14 Nov 2022 499th twocatsinatrenchcoat 829 82 19ms 29 Nov 2022 499th aid-f 829 82 24ms 21 Mar 2023 499th henrydukepickle 829 82 20ms 8 Dec 2023 499th amollberg 🇸🇪 829 82 25ms 3 Jan 2024 499th mrmena 🇦🇺 829 82 29ms 19 Mar 2024 499th rifatx 829 82 26ms 16 Jul 2024 499th NicoH76 829 82 18ms 24 Apr 2025 499th 0dyse 829 82 36ms 29 Apr 2025 499th georgekattenbelt 829 82 20ms 6 May 2025 499th some-function 829 82 18ms 2 Jul 2025 514th bonevbs 819 83 20ms 8 May 2022 514th feherd 819 83 22ms 20 May 2022 514th pbleich 819 83 23ms 24 Aug 2022 514th RoscoeSmith 819 83 25ms 20 Nov 2022 514th amadeusdotpng 819 83 27ms 22 Apr 2023 514th ross-i 819 83 17ms 5 Jul 2023 514th anonymaew 819 83 31ms 2 Aug 2023 514th mstang107 819 83 24ms 20 Dec 2023 514th LHLaurini 🇧🇷 819 83 25ms 26 Jun 2024 514th C0derX3 🇺🇸 819 83 21ms 18 Sep 2024 514th ComputerKWasTaken 🇺🇸 819 83 27ms 20 Jan 2025 514th Vexxter9 🇳🇱 819 83 71ms 4 Feb 2025 First Prev 451–525 of 794 Next Last