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 Submitted 355th chartung17 895 76 22ms 17 Dec 2023 355th smokestacklightnin 🇺🇸 895 76 31ms 10 Jan 2024 355th NickTheEASDude 🇺🇸 895 76 54ms 26 Jan 2024 355th yuchuehw 895 76 26ms 2 Feb 2024 355th Azearia 895 76 35ms 26 Feb 2024 355th tpasfieldERAU 895 76 31ms 18 May 2024 355th khavik 895 76 26ms 29 May 2024 355th Ythaenagor 895 76 23ms 5 Aug 2024 355th martion2007 895 76 57ms 9 Aug 2024 355th sjrct 895 76 26ms 10 Aug 2024 355th Mathrew2012 895 76 18ms 9 Nov 2024 355th kawrei 895 76 27ms 4 May 2025 355th RaBa21 🇭🇺 895 76 25ms 19 Jul 2025 355th mathieurodic 895 76 26ms 3 days ago 355th DrakeSeteraO 895 76 56ms 9 hours ago 391st cooljoseph1 883 77 24ms 6 May 2022 391st krcs 🇵🇱 883 77 26ms 11 May 2022 391st kenballus 883 77 28ms 13 Jul 2022 391st 104210 883 77 24ms 29 Jul 2022 391st andre-de-lorde 883 77 26ms 1 Sep 2022 391st zstephe 883 77 26ms 2 Dec 2022 391st badboj40 883 77 24ms 27 Dec 2022 391st henrytranter 883 77 26ms 11 Jan 2023 391st DragonaireM 883 77 33ms 6 Feb 2023 391st steffan-polygolf 883 77 23ms 19 Feb 2023 391st kellantech 883 77 22ms 21 May 2023 391st Ty-Cyr 883 77 20ms 14 Jul 2023 391st camieac 🇬🇧 883 77 22ms 14 Jul 2023 391st nathsou 🇫🇷 883 77 21ms 2 Sep 2023 391st MisterrLuck 883 77 22ms 7 Sep 2023 391st alexjurkiewicz 🇦🇺 883 77 24ms 7 Nov 2023 391st askipio 883 77 22ms 22 Nov 2023 391st trinityy-7 883 77 25ms 17 Dec 2023 391st zwxzwxzwx21 883 77 29ms 30 Jan 2024 391st PyryL 🇫🇮 883 77 22ms 23 Aug 2024 391st CyberTapir 883 77 30ms 27 Aug 2024 391st junten1 883 77 31ms 20 Oct 2024 391st croc54 883 77 24ms 24 Dec 2024 391st za3k 883 77 24ms 3 Jun 2025 391st mossiegoat 883 77 20ms 17 Aug 2025 391st Babafaba 883 77 20ms 8 days ago 417th AGoyet 872 78 24ms 29 Jul 2022 417th RYNO8 872 78 30ms 16 Aug 2022 417th TheCod-r 🇦🇶 872 78 27ms 28 Sep 2022 417th Marthe-CC 872 78 23ms 9 Oct 2022 417th Wildst 872 78 19ms 2 Nov 2022 417th nmgetahun 872 78 22ms 4 Dec 2022 417th Techdude01 872 78 25ms 13 Dec 2022 417th tvcv901 872 78 23ms 22 Mar 2023 417th oceko 872 78 20ms 24 Mar 2023 417th yoyoyonono 872 78 26ms 15 May 2023 417th Nic0M 872 78 19ms 13 Aug 2023 417th ssbhatt4321 872 78 30ms 14 Oct 2023 417th wyarde 872 78 20ms 7 Nov 2023 417th EthanJ-Brady 872 78 21ms 24 Dec 2023 417th adamreidsmith 872 78 26ms 16 Feb 2024 417th Jacob385 872 78 69ms 5 Mar 2024 417th DGipe 872 78 23ms 13 May 2024 417th cyxv 872 78 30ms 2 Aug 2024 417th gallium-gonzollium 872 78 26ms 26 Aug 2024 417th Europe2048 872 78 26ms 24 Nov 2024 417th GeneralFabian 872 78 26ms 14 Dec 2024 438th kevdah 861 79 22ms 27 May 2022 438th jacklynnepenick 861 79 19ms 22 Jun 2022 438th james-downey 861 79 32ms 9 Jul 2022 438th andre-lameirinhas 🇵🇹 861 79 28ms 26 Jul 2022 438th hamsterskywalker 861 79 20ms 7 Sep 2022 438th Pena86 861 79 24ms 14 Sep 2022 438th hymanimy 861 79 26ms 24 Nov 2022 438th Demonarchet 861 79 21ms 18 Apr 2023 438th dtaylor0 861 79 19ms 23 May 2023 438th bac0id 861 79 20ms 26 Sep 2023 438th neonchickens 861 79 27ms 6 Oct 2023 438th MWI-polygolf 861 79 23ms 6 Dec 2023 438th eddvrs 861 79 23ms 22 Dec 2023 First Prev 376–450 of 792 Next Last