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 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 Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers 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 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 Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial # Golfer Points Bytes Time 436th IsaacAlexBarden 861 79 6 Feb 2025 436th taesungh 861 79 7 Jun 2025 436th benvreeves 861 79 25 Jul 2025 436th saturzay 861 79 19 Aug 2025 436th TransformLikeATensor 861 79 28 mins ago 456th j-Ewan 850 80 13 May 2022 456th osmith93 850 80 14 Jun 2022 456th hjcafaroUC 850 80 21 Jun 2022 456th dankleeman 850 80 8 Aug 2022 456th dillon-duncando 850 80 4 Oct 2022 456th DrPiranoid 850 80 11 Nov 2022 456th mdnestor 850 80 23 Dec 2022 456th Edjyzod 850 80 7 Mar 2023 456th henry-von-wichert 850 80 31 Mar 2023 456th Hortaros 850 80 16 Apr 2023 456th ankeetparikh 850 80 5 May 2023 456th Neonader 850 80 9 May 2023 456th nickgza 850 80 17 Aug 2023 456th MiranDaniel 🇨🇿 850 80 30 Aug 2023 456th Fanrco 850 80 31 Aug 2023 456th nyoshe 850 80 10 Oct 2023 456th AzroyAr 850 80 28 Dec 2023 456th Alex-Huggett 🇬🇧 850 80 13 Apr 2024 456th RobertHoeh 850 80 27 May 2024 456th LorenzoDeGaspari 850 80 27 May 2024 456th AstroOrbis 850 80 7 May 2025 456th vgamula 🇺🇦 850 80 16 Jul 2025 456th imoxyg 850 80 29 Aug 2025 479th abba23 840 81 26 May 2022 479th docd 840 81 8 Aug 2022 479th Smetalo 840 81 25 Aug 2022 479th glesnick 840 81 6 Sep 2022 479th Yareeeema 840 81 3 Nov 2022 479th RandGuy 840 81 23 Nov 2022 479th GWStuart 840 81 19 Dec 2022 479th wa1ker38552 840 81 22 May 2023 479th LimaoC 840 81 11 Aug 2023 479th robertovers 840 81 2 Oct 2023 479th HanaEndUser 840 81 15 Feb 2024 479th Loag 840 81 22 Sep 2024 479th julian-hoelz 840 81 23 Sep 2024 479th JesseNoEyes 🇺🇸 840 81 4 Oct 2024 479th GoldStar184 840 81 27 Nov 2024 479th ihatethefrench 840 81 5 Jan 2025 479th csharpython 840 81 2 Aug 2025 496th Ailko 🇧🇪 829 82 12 May 2022 496th joshmoody24 829 82 12 May 2022 496th andrewgopher 829 82 25 Jun 2022 496th estomagordo 🇳🇱 829 82 26 Oct 2022 496th ThatAlo 829 82 14 Nov 2022 496th twocatsinatrenchcoat 829 82 29 Nov 2022 496th aid-f 829 82 21 Mar 2023 496th henrydukepickle 829 82 8 Dec 2023 496th amollberg 🇸🇪 829 82 3 Jan 2024 496th mrmena 🇦🇺 829 82 19 Mar 2024 496th rifatx 829 82 16 Jul 2024 496th NicoH76 829 82 24 Apr 2025 496th 0dyse 829 82 29 Apr 2025 496th georgekattenbelt 829 82 6 May 2025 496th some-function 829 82 2 Jul 2025 511th bonevbs 819 83 8 May 2022 511th feherd 819 83 20 May 2022 511th pbleich 819 83 24 Aug 2022 511th RoscoeSmith 819 83 20 Nov 2022 511th amadeusdotpng 819 83 22 Apr 2023 511th ross-i 819 83 5 Jul 2023 511th anonymaew 819 83 2 Aug 2023 511th mstang107 819 83 20 Dec 2023 511th LHLaurini 🇧🇷 819 83 26 Jun 2024 511th C0derX3 🇺🇸 819 83 18 Sep 2024 511th ComputerKWasTaken 🇺🇸 819 83 20 Jan 2025 511th Vexxter9 🇳🇱 819 83 4 Feb 2025 511th CodyKlingler 819 83 7 Feb 2025 511th OyuDays 819 83 17 Mar 2025 511th julianreece 819 83 29 Apr 2025 First Prev 451–525 of 788 Next Last