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 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 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 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 Hilbert Curve Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle 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 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 Groovy Harbour Hare Haxe Hush Hy iogii Knight 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 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 Groovy Harbour Hare Haxe Hush Hy iogii Knight 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 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 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 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 Hilbert Curve Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Bytes Time 439th nickgza 850 80 17 Aug 2023 439th MiranDaniel 🇨🇿 850 80 30 Aug 2023 439th Fanrco 850 80 31 Aug 2023 439th nyoshe 850 80 10 Oct 2023 439th AzroyAr 850 80 28 Dec 2023 439th Alex-Huggett 🇬🇧 850 80 13 Apr 2024 439th RobertHoeh 850 80 27 May 2024 439th LorenzoDeGaspari 850 80 27 May 2024 439th AstroOrbis 850 80 7 May 2025 439th vgamula 🇺🇦 850 80 16 Jul 2025 461st abba23 840 81 26 May 2022 461st docd 840 81 8 Aug 2022 461st Smetalo 840 81 25 Aug 2022 461st glesnick 840 81 6 Sep 2022 461st Yareeeema 840 81 3 Nov 2022 461st RandGuy 840 81 23 Nov 2022 461st GWStuart 840 81 19 Dec 2022 461st wa1ker38552 840 81 22 May 2023 461st LimaoC 840 81 11 Aug 2023 461st robertovers 840 81 2 Oct 2023 461st HanaEndUser 840 81 15 Feb 2024 461st Loag 840 81 22 Sep 2024 461st julian-hoelz 840 81 23 Sep 2024 461st JesseNoEyes 🇺🇸 840 81 4 Oct 2024 461st GoldStar184 840 81 27 Nov 2024 461st ihatethefrench 840 81 5 Jan 2025 461st csharpython 840 81 12 days ago 478th Ailko 🇧🇪 829 82 12 May 2022 478th joshmoody24 829 82 12 May 2022 478th andrewgopher 829 82 25 Jun 2022 478th estomagordo 🇳🇱 829 82 26 Oct 2022 478th ThatAlo 829 82 14 Nov 2022 478th twocatsinatrenchcoat 829 82 29 Nov 2022 478th aid-f 829 82 21 Mar 2023 478th henrydukepickle 829 82 8 Dec 2023 478th amollberg 🇸🇪 829 82 3 Jan 2024 478th mrmena 🇦🇺 829 82 19 Mar 2024 478th rifatx 829 82 16 Jul 2024 478th NicoH76 829 82 24 Apr 2025 478th 0dyse 829 82 29 Apr 2025 478th 48panda 829 82 6 May 2025 478th some-function 829 82 2 Jul 2025 493rd bonevbs 819 83 8 May 2022 493rd feherd 819 83 20 May 2022 493rd pbleich 819 83 24 Aug 2022 493rd RoscoeSmith 819 83 20 Nov 2022 493rd amadeusdotpng 819 83 22 Apr 2023 493rd ross-i 819 83 5 Jul 2023 493rd anonymaew 819 83 2 Aug 2023 493rd mstang107 819 83 20 Dec 2023 493rd LHLaurini 🇧🇷 819 83 26 Jun 2024 493rd C0derX3 🇺🇸 819 83 18 Sep 2024 493rd ComputerKWasTaken 🇺🇸 819 83 20 Jan 2025 493rd Vexxter9 🇳🇱 819 83 4 Feb 2025 493rd CodyKlingler 819 83 7 Feb 2025 493rd OyuDays 819 83 17 Mar 2025 493rd julianreece 819 83 29 Apr 2025 508th Feniske 🇫🇷 810 84 7 Oct 2022 508th Eilonlif 🇮🇱 810 84 29 Mar 2023 508th mhsaul 810 84 11 Apr 2023 508th Phyisis 810 84 30 Apr 2024 508th MaxCastella 🇫🇷 810 84 11 Oct 2024 508th SURAJMITTAL 810 84 17 Dec 2024 508th simplylu 810 84 5 Jan 2025 508th WillowWispy 810 84 14 Mar 2025 508th rustykitty 810 84 2 May 2025 508th VedJosh 810 84 3 May 2025 508th hetz2625 810 84 4 May 2025 519th aazuspan 800 85 15 Jun 2022 519th myleopard 800 85 20 Jul 2022 519th LukasFolwarczny 🇨🇿 800 85 16 Sep 2022 519th SB-945 800 85 7 Feb 2024 519th aaardwark 800 85 1 Jun 2025 524th MichaelMBradley 🇨🇦 791 86 5 Jun 2022 524th Lemonz-13223 791 86 21 Sep 2022 Prev 451–525 of 764 Next