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 Binary Lambda Calculus Calendar Connect Four 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 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 Binary Lambda Calculus Calendar Connect Four 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 Tower of Hanoi Turtle Tutorial # Golfer Points Bytes Time Submitted 518th LHLaurini 🇧🇷 759 83 18ms 26 Jun 2024 518th C0derX3 🇺🇸 759 83 19ms 18 Sep 2024 518th ComputerKWasTaken 🇺🇸 759 83 23ms 20 Jan 2025 518th Vexxter9 🇳🇱 759 83 57ms 4 Feb 2025 518th CodyKlingler 759 83 23ms 7 Feb 2025 518th OyuDays 759 83 18ms 17 Mar 2025 518th julianreece 759 83 22ms 29 Apr 2025 518th rustykitty 🇺🇸 759 83 22ms 23 days ago 534th Feniske 🇫🇷 750 84 18ms 7 Oct 2022 534th Eilonlif 🇮🇱 750 84 22ms 29 Mar 2023 534th mhsaul 750 84 16ms 11 Apr 2023 534th Phyisis 750 84 23ms 30 Apr 2024 534th MaxCastella 🇫🇷 750 84 21ms 11 Oct 2024 534th SURAJMITTAL 750 84 16ms 17 Dec 2024 534th simplylu 750 84 18ms 5 Jan 2025 534th WillowWispy 750 84 21ms 14 Mar 2025 534th VedJosh 750 84 24ms 3 May 2025 534th hetz2625 750 84 23ms 4 May 2025 544th aazuspan 741 85 20ms 15 Jun 2022 544th myleopard 741 85 22ms 20 Jul 2022 544th LukasFolwarczny 🇨🇿 741 85 23ms 16 Sep 2022 544th SB-945 741 85 25ms 7 Feb 2024 544th aaardwark 741 85 26ms 1 Jun 2025 544th kmathis22 741 85 19ms 10 Sep 2025 550th MichaelMBradley 🇨🇦 733 86 22ms 5 Jun 2022 550th Lemonz-13223 733 86 19ms 21 Sep 2022 550th Bodo171 733 86 25ms 24 Nov 2022 550th shibacho 🇯🇵 733 86 19ms 25 Nov 2022 550th Vaekor 733 86 18ms 9 Jul 2023 550th LeoVanderSteege 733 86 16ms 18 Nov 2023 550th Pale-Vessel 733 86 17ms 18 Dec 2023 550th tik25 733 86 33ms 28 Mar 2024 550th willschremmer 733 86 16ms 27 Apr 2024 550th jamiloBBKing 733 86 22ms 27 Jan 2025 550th AsishKunta 733 86 19ms 1 Apr 2025 550th Hemanthred2005 733 86 18ms 1 Apr 2025 550th Voltrifrodec 🇸🇰 733 86 23ms 19 Apr 2025 550th lurey99 733 86 16ms 23 Apr 2025 550th Alban-Boissard 733 86 24ms 14 Jun 2025 550th Arkadios200 733 86 25ms 21 Sep 2025 566th ToE42 724 87 16ms 19 Oct 2022 566th omri2001 724 87 18ms 19 Oct 2022 566th Skallos-s 724 87 22ms 5 Dec 2022 566th damoc1es 724 87 17ms 16 Apr 2023 566th michelebastione 🇮🇹 724 87 24ms 20 Dec 2023 566th clampcorder 724 87 17ms 24 Jan 2024 566th GitQuick 724 87 19ms 23 Feb 2024 566th EricSchraf 724 87 18ms 21 Mar 2024 566th salvatore-abello 724 87 20ms 5 Sep 2024 566th PotatoSaladOverlord 724 87 18ms 21 May 2025 566th Ibozz91 724 87 22ms 8 Jun 2025 566th Aquateraneal 724 87 17ms 2 days ago 578th Andre3582 716 88 21ms 29 Oct 2022 578th Darknova2468 716 88 18ms 20 Nov 2022 578th Solsticely 716 88 20ms 20 Nov 2022 578th goGuru 716 88 18ms 21 Dec 2022 578th msbranicky 716 88 35ms 9 Aug 2023 578th gussy420 716 88 17ms 28 Oct 2023 578th Shynif 716 88 20ms 21 Feb 2024 578th asterized 716 88 18ms 24 Aug 2024 578th hippopotam00sehead 🇨🇦 716 88 19ms 11 Sep 2024 578th 08jne01 716 88 16ms 21 Nov 2024 578th davidludwik2370 716 88 18ms 14 Sep 2025 589th lovernj 708 89 23ms 23 Aug 2022 589th Roj 708 89 22ms 20 Nov 2022 589th aeonsablaze 708 89 20ms 22 Nov 2022 589th buddyw 708 89 16ms 9 Mar 2023 589th VV1Git 708 89 23ms 28 Mar 2023 589th dranjohn 708 89 20ms 17 Sep 2023 589th ArenaGrenade 708 89 23ms 19 Feb 2024 589th NanduBC 708 89 20ms 6 Sep 2024 589th TheAtrossian 708 89 19ms 5 Jan 2025 589th KimJua41 708 89 19ms 4 May 2025 589th Upload-and-View 🇺🇦 708 89 27ms 20 Aug 2025 600th StoverGitHub 700 90 29ms 16 Jun 2022 First Prev 526–600 of 801 Next Last