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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Multitap Input 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Multitap Input 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 555th anonymaew 759 83 26ms 2 Aug 2023 555th mstang107 759 83 23ms 20 Dec 2023 555th LHLaurini 🇧🇷 759 83 18ms 26 Jun 2024 555th C0derX3 🇺🇸 759 83 22ms 18 Sep 2024 555th ComputerKWasTaken 🇺🇸 759 83 27ms 20 Jan 2025 555th Vexxter9 🇳🇱 759 83 58ms 4 Feb 2025 555th CodyKlingler 759 83 25ms 7 Feb 2025 555th OyuDays 759 83 21ms 17 Mar 2025 555th julianreece 759 83 23ms 29 Apr 2025 555th rustykitty 🇺🇸 759 83 22ms 24 Oct 2025 555th Kinkade76 759 83 36ms 4 Feb 2026 555th parthm2005 759 83 18ms 28 Feb 2026 555th Apfelvater 759 83 28ms 5 Mar 2026 555th kitotch 759 83 24ms 26 days ago 575th Feniske 🇫🇷 750 84 20ms 7 Oct 2022 575th Eilonlif 🇮🇱 750 84 23ms 29 Mar 2023 575th mhsaul 750 84 17ms 11 Apr 2023 575th Phyisis 750 84 22ms 30 Apr 2024 575th MaxCastella 🇫🇷 750 84 23ms 11 Oct 2024 575th SURAJMITTAL 750 84 17ms 17 Dec 2024 575th simplylu 750 84 20ms 5 Jan 2025 575th WillowWispy 750 84 22ms 14 Mar 2025 575th VedJosh 750 84 25ms 3 May 2025 575th hetz2625 750 84 25ms 4 May 2025 575th ottav14 750 84 21ms 1 Dec 2025 575th benanlam 750 84 21ms 24 Dec 2025 575th pph-2203 750 84 17ms 26 Feb 2026 588th aazuspan 741 85 19ms 15 Jun 2022 588th myleopard 741 85 22ms 20 Jul 2022 588th LukasFolwarczny 🇨🇿 741 85 26ms 16 Sep 2022 588th SB-945 741 85 25ms 7 Feb 2024 588th aaardwark 741 85 22ms 1 Jun 2025 588th kmathis22 741 85 20ms 10 Sep 2025 594th MichaelMBradley 🇨🇦 733 86 24ms 5 Jun 2022 594th Lemonz-13223 733 86 20ms 21 Sep 2022 594th Bodo171 733 86 25ms 24 Nov 2022 594th shibacho 🇯🇵 733 86 20ms 25 Nov 2022 594th Vaekor 733 86 20ms 9 Jul 2023 594th LeoVanderSteege 733 86 17ms 18 Nov 2023 594th Pale-Vessel 733 86 21ms 18 Dec 2023 594th tik25 733 86 25ms 28 Mar 2024 594th willschremmer 733 86 16ms 27 Apr 2024 594th jamiloBBKing 733 86 24ms 27 Jan 2025 594th AsishKunta 733 86 22ms 1 Apr 2025 594th Hemanthred2005 733 86 19ms 1 Apr 2025 594th Voltrifrodec 🇸🇰 733 86 23ms 19 Apr 2025 594th lurey99 733 86 18ms 23 Apr 2025 594th Alban-Boissard 733 86 23ms 14 Jun 2025 594th Aquateraneal 🇺🇸 733 86 17ms 8 Mar 2026 594th JNedd26 733 86 31ms 5 days ago 611th ToE42 724 87 18ms 19 Oct 2022 611th definitelyOmri 724 87 19ms 19 Oct 2022 611th Skallos-s 724 87 39ms 5 Dec 2022 611th damoc1es 724 87 19ms 16 Apr 2023 611th michelebastione 🇮🇹 724 87 26ms 20 Dec 2023 611th clampcorder 724 87 18ms 24 Jan 2024 611th GitQuick 724 87 20ms 23 Feb 2024 611th EricSchraf 724 87 19ms 21 Mar 2024 611th salvatore-abello 724 87 22ms 5 Sep 2024 611th PotatoSaladOverlord 724 87 20ms 21 May 2025 611th Ibozz91 724 87 24ms 8 Jun 2025 611th chenyuan33 724 87 25ms 21 Feb 2026 623rd Andre3582 716 88 17ms 29 Oct 2022 623rd Darknova2468 716 88 19ms 20 Nov 2022 623rd Solsticely 716 88 20ms 20 Nov 2022 623rd goGuru 716 88 22ms 21 Dec 2022 623rd msbranicky 716 88 38ms 9 Aug 2023 623rd gussy420 716 88 20ms 28 Oct 2023 623rd Shynif 716 88 22ms 21 Feb 2024 623rd asterized 716 88 19ms 24 Aug 2024 623rd hippopotam00sehead 🇨🇦 716 88 20ms 11 Sep 2024 623rd 08jne01 716 88 16ms 21 Nov 2024 623rd davidludwik2370 716 88 21ms 14 Sep 2025 623rd kasarino 716 88 18ms 26 days ago 635th lovernj 708 89 24ms 23 Aug 2022 635th Roj 708 89 23ms 20 Nov 2022 635th aeonsablaze 708 89 18ms 22 Nov 2022 635th buddyw 708 89 16ms 9 Mar 2023 635th VV1Git 708 89 19ms 28 Mar 2023 635th dranjohn 708 89 21ms 17 Sep 2023 First Prev 561–640 of 850 Next Last