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 195th edsrzf 🇳🇿 851 74 18ms 10 Sep 2025 195th Matter1024 🇮🇳 851 74 18ms 11 Sep 2025 195th pauljoohyunkim 851 74 18ms 25 Sep 2025 195th joll05 🇸🇪 851 74 25ms 1 Oct 2025 195th retrohun 851 74 19ms 3 Oct 2025 195th solisolu 851 74 21ms 4 Oct 2025 195th Code-Coder-coder 851 74 18ms 12 Oct 2025 195th fvla 851 74 25ms 15 days ago 195th 09cf 851 74 18ms 9 hours ago 310th martinnorling 🇸🇪 840 75 20ms 5 May 2022 310th Trunksistor 🇫🇷 840 75 21ms 9 May 2022 310th bbakersmith 840 75 24ms 28 Jun 2022 310th bsoyka 🇺🇸 840 75 18ms 16 Jul 2022 310th P-Quentin 🇫🇷 840 75 18ms 3 Aug 2022 310th julienlamoureux78 840 75 22ms 12 Aug 2022 310th dzshn 840 75 24ms 16 Aug 2022 310th NerdyMcNerd42 840 75 19ms 20 Aug 2022 310th destofr 840 75 18ms 25 Aug 2022 310th vishwathg 840 75 51ms 10 Oct 2022 310th nkoppel 840 75 18ms 19 Oct 2022 310th AZ9tumas 840 75 19ms 23 Oct 2022 310th EthanGrant1 840 75 21ms 7 Nov 2022 310th Omega65536 🇩🇪 840 75 19ms 24 Nov 2022 310th b10011 🇫🇮 840 75 19ms 3 Jan 2023 310th 4ndyJ 🇬🇧 840 75 26ms 3 Jan 2023 310th randolchance 840 75 20ms 8 Jan 2023 310th LeeCamp 840 75 17ms 12 Jan 2023 310th hellwue 840 75 20ms 15 Feb 2023 310th nandanjp 840 75 19ms 29 Mar 2023 310th kaptsanovb 840 75 22ms 20 Apr 2023 310th galloj 🇨🇿 840 75 18ms 20 May 2023 310th jhu04 840 75 19ms 23 Jun 2023 310th HelloYuiYui 840 75 20ms 1 Nov 2023 310th tobyLovick 840 75 26ms 10 Nov 2023 310th VictorStenvers 🇳🇱 840 75 24ms 13 Nov 2023 310th RZ781 840 75 27ms 19 Nov 2023 310th mikehanus 840 75 25ms 21 Nov 2023 310th 1231234md5 🇨🇳 840 75 21ms 14 Dec 2023 310th Hebelub 840 75 21ms 6 Jan 2024 310th minhtrancccp 840 75 22ms 11 Jan 2024 310th 123mjb 840 75 21ms 25 Jan 2024 310th jbjd 840 75 21ms 25 Feb 2024 310th gabe-gallegos 840 75 19ms 2 May 2024 310th kejcao 🇨🇦 840 75 24ms 11 May 2024 310th f-tucker 840 75 21ms 24 May 2024 310th Florian-Mt 840 75 18ms 22 Jul 2024 310th codingisgreatbutiamnot 840 75 22ms 9 Aug 2024 310th Terobero 840 75 31ms 23 Aug 2024 310th abhishekg999 840 75 51ms 17 Sep 2024 310th RedzGoose 🇦🇺 840 75 21ms 7 Oct 2024 310th Clay-Goodling 840 75 23ms 8 Oct 2024 310th JunkIce 840 75 23ms 5 Mar 2025 310th jiji7879 840 75 23ms 20 Jun 2025 310th faragocsaba 840 75 23ms 22 Jun 2025 310th bknower 840 75 19ms 30 Jun 2025 310th clayboll99 840 75 29ms 14 Jul 2025 310th Nikinator2704 840 75 18ms 15 days ago 358th guilhem-roy 🇫🇷 829 76 24ms 5 May 2022 358th NewDefectus 🇮🇱 829 76 22ms 6 May 2022 358th CuboidRaptor 🇨🇦 829 76 23ms 25 May 2022 358th TheSmilingTurtle 829 76 33ms 5 Jun 2022 358th Romain-1 🇫🇷 829 76 18ms 8 Jun 2022 358th jhpaques 🇫🇷 829 76 22ms 30 Jul 2022 358th chriscianfarani 829 76 21ms 10 Aug 2022 358th eshilo-draper 829 76 21ms 13 Sep 2022 358th suwat513 829 76 21ms 22 Sep 2022 358th Jaydosu 829 76 21ms 14 Nov 2022 358th tails618 829 76 27ms 2 Dec 2022 358th KevinLyvers 829 76 19ms 17 Dec 2022 358th nayakrujul 829 76 20ms 3 Jan 2023 358th CheeseCake628 🇳🇴 829 76 24ms 8 Jan 2023 358th CatsAreFluffy 829 76 26ms 18 Feb 2023 358th adamnielson42 🇺🇸 829 76 21ms 1 Mar 2023 358th Schreipfelerer 829 76 27ms 9 Apr 2023 358th hm5822 829 76 24ms 22 Apr 2023 First Prev 301–375 of 801 Next Last
