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 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 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 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel 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 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel 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 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 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 199th denisfouchard 851 74 18ms 23 Aug 2025 199th Emutis 🇱🇹 851 74 19ms 23 Aug 2025 199th edsrzf 🇳🇿 851 74 18ms 10 Sep 2025 199th Matter1024 🇮🇳 851 74 18ms 11 Sep 2025 199th pauljoohyunkim 851 74 19ms 25 Sep 2025 199th joll05 🇸🇪 851 74 23ms 1 Oct 2025 199th retrohun 851 74 20ms 3 Oct 2025 199th solisolu 851 74 20ms 4 Oct 2025 199th Code-Coder-coder 851 74 19ms 12 Oct 2025 199th fvla 851 74 24ms 31 Oct 2025 199th JOrE20 🇺🇸 851 74 17ms 24 days ago 199th zgialor-lab 851 74 23ms 12 hours ago 313th martinnorling 🇸🇪 840 75 22ms 5 May 2022 313th Trunksistor 🇫🇷 840 75 23ms 9 May 2022 313th bbakersmith 840 75 23ms 28 Jun 2022 313th bsoyka 🇺🇸 840 75 18ms 16 Jul 2022 313th P-Quentin 🇫🇷 840 75 18ms 3 Aug 2022 313th julienlamoureux78 840 75 18ms 12 Aug 2022 313th dzshn 840 75 24ms 16 Aug 2022 313th NerdyMcNerd42 840 75 23ms 20 Aug 2022 313th destofr 840 75 19ms 25 Aug 2022 313th vishwathg 840 75 50ms 10 Oct 2022 313th nkoppel 840 75 19ms 19 Oct 2022 313th AZ9tumas 840 75 19ms 23 Oct 2022 313th EthanGrant1 840 75 22ms 7 Nov 2022 313th Omega65536 🇩🇪 840 75 18ms 24 Nov 2022 313th b10011 🇫🇮 840 75 24ms 3 Jan 2023 313th 4ndyJ 🇬🇧 840 75 21ms 3 Jan 2023 313th randolchance 840 75 18ms 8 Jan 2023 313th LeeCamp 840 75 17ms 12 Jan 2023 313th hellwue 840 75 19ms 15 Feb 2023 313th nandanjp 840 75 19ms 29 Mar 2023 313th kaptsanovb 840 75 24ms 20 Apr 2023 313th galloj 🇨🇿 840 75 18ms 20 May 2023 313th jhu04 840 75 21ms 23 Jun 2023 313th HelloYuiYui 840 75 19ms 1 Nov 2023 313th tobyLovick 840 75 25ms 10 Nov 2023 313th VictorStenvers 🇳🇱 840 75 22ms 13 Nov 2023 313th RZ781 840 75 29ms 19 Nov 2023 313th mikehanus 840 75 23ms 21 Nov 2023 313th 1231234md5 🇨🇳 840 75 18ms 14 Dec 2023 313th Hebelub 840 75 27ms 6 Jan 2024 313th minhtrancccp 840 75 22ms 11 Jan 2024 313th 123mjb 840 75 23ms 25 Jan 2024 313th jbjd 840 75 22ms 25 Feb 2024 313th gabe-gallegos 840 75 19ms 2 May 2024 313th kejcao 🇨🇦 840 75 23ms 11 May 2024 313th f-tucker 840 75 22ms 24 May 2024 313th Florian-Mt 840 75 24ms 22 Jul 2024 313th codingisgreatbutiamnot 840 75 19ms 9 Aug 2024 313th Terobero 840 75 30ms 23 Aug 2024 313th abhishekg999 840 75 53ms 17 Sep 2024 313th RedzGoose 🇦🇺 840 75 23ms 7 Oct 2024 313th Clay-Goodling 840 75 24ms 8 Oct 2024 313th JunkIce 840 75 24ms 5 Mar 2025 313th jiji7879 840 75 23ms 20 Jun 2025 313th faragocsaba 840 75 24ms 22 Jun 2025 313th bknower 840 75 19ms 30 Jun 2025 313th clayboll99 840 75 21ms 14 Jul 2025 313th Nikinator2704 840 75 19ms 1 Nov 2025 313th mmoffitt 840 75 24ms 27 days ago 362nd guilhem-roy 🇫🇷 829 76 24ms 5 May 2022 362nd NewDefectus 🇮🇱 829 76 21ms 6 May 2022 362nd CuboidRaptor 🇨🇦 829 76 23ms 25 May 2022 362nd TheSmilingTurtle 829 76 26ms 5 Jun 2022 362nd Romain-1 🇫🇷 829 76 18ms 8 Jun 2022 362nd jhpaques 🇫🇷 829 76 25ms 30 Jul 2022 362nd chriscianfarani 829 76 24ms 10 Aug 2022 362nd eshilo-draper 829 76 22ms 13 Sep 2022 362nd suwat513 829 76 19ms 22 Sep 2022 362nd Jaydosu 829 76 22ms 14 Nov 2022 362nd tails618 829 76 26ms 2 Dec 2022 362nd KevinLyvers 829 76 19ms 17 Dec 2022 362nd nayakrujul 829 76 19ms 3 Jan 2023 362nd CheeseCake628 🇳🇴 829 76 22ms 8 Jan 2023 First Prev 301–375 of 810 Next Last
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