Collatz in Python in chars. 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 Chars Time Submitted 637th VV1Git 640 89 19ms 28 Mar 2023 637th dranjohn 640 89 21ms 17 Sep 2023 637th ArenaGrenade 640 89 25ms 19 Feb 2024 637th NanduBC 640 89 23ms 6 Sep 2024 637th TheAtrossian 640 89 23ms 5 Jan 2025 637th KimJua41 640 89 20ms 4 May 2025 637th Nathan-Masala 640 89 30ms 2 days ago 648th StoverGitHub 633 90 22ms 16 Jun 2022 648th jamespeilunli 633 90 24ms 4 Jul 2022 648th TrentGlimp 633 90 20ms 3 Sep 2022 648th Ugoran 633 90 20ms 19 Nov 2022 648th PATTRIM 633 90 19ms 5 Jan 2023 648th charliegaming 633 90 19ms 3 Oct 2023 648th lhulinsky 633 90 19ms 22 Oct 2024 648th bthalheim 633 90 22ms 6 Dec 2024 648th SinArieh 633 90 25ms 4 May 2025 648th islptng 633 90 23ms 7 Jul 2025 648th Mr-McChicken 633 90 18ms 4 Oct 2025 648th NoneTheFewer 633 90 20ms 4 Dec 2025 660th AbelPelser 626 91 23ms 3 Jul 2022 660th Seis 626 91 18ms 9 Dec 2022 660th r-i-c-e 626 91 21ms 9 Jul 2023 660th joshcors 626 91 17ms 30 Jun 2024 660th resoNathan 626 91 16ms 9 Jul 2024 660th jameswmccarty 626 91 21ms 24 Sep 2024 660th hamilton-bonds 626 91 19ms 12 Nov 2024 660th Wonamm 626 91 28ms 14 Feb 2025 668th TimLeffke 620 92 22ms 17 Aug 2022 668th Rythoka 620 92 17ms 17 Oct 2022 668th UriyaBA 620 92 16ms 19 Mar 2023 668th VladislavGitter 🇪🇸 620 92 19ms 14 Nov 2023 668th ridingqwerty 🇺🇸 620 92 16ms 22 Dec 2023 668th Thonoton 620 92 19ms 1 Feb 2024 668th OCNeve 620 92 19ms 17 Jun 2024 668th themoonisacheese 620 92 24ms 25 Feb 2025 668th BabySharkHi 620 92 21ms 22 Apr 2025 668th arjunarya1 620 92 17ms 28 Aug 2025 668th TJK-S 620 92 22ms 10 Oct 2025 679th Bananapants22 613 93 27ms 4 Sep 2022 679th jaxmattfair 🇺🇸 613 93 18ms 10 Jan 2023 679th fenix-bear 613 93 20ms 18 Nov 2023 679th epic-programmer-guy 613 93 23ms 22 Dec 2023 679th brimstonetrader 613 93 26ms 18 Nov 2024 679th HunterC14 613 93 28ms 10 Feb 2026 685th atazzam 🇺🇸 606 94 18ms 18 May 2022 685th rohangpta 606 94 16ms 8 Aug 2022 685th shinylego 606 94 24ms 14 Sep 2022 685th sgaltair 606 94 19ms 4 Nov 2022 685th TotoAJ 606 94 19ms 15 Dec 2023 685th Gusic06 606 94 19ms 6 May 2024 685th kyleyarwood 606 94 23ms 6 Oct 2024 685th jj0786-cell 606 94 22ms 1 Apr 2025 685th griffinschreiber 606 94 27ms 1 Apr 2025 685th o800 606 94 18ms 17 Nov 2025 695th felixcroc 600 95 20ms 30 Mar 2023 695th Pyro569 600 95 20ms 4 Jul 2023 695th rm-rf-innocence 600 95 20ms 19 Dec 2023 695th Bit125 600 95 21ms 30 Jan 2024 695th aalec 600 95 23ms 25 Apr 2024 695th strogor 600 95 20ms 13 Jun 2025 695th cthierfelder 🇲🇨 600 95 20ms 17 Jul 2025 695th ThomasDelepine 600 95 23ms 29 Oct 2025 695th professor-l 600 95 16ms 9 days ago 704th karhuthebear 594 96 23ms 9 May 2022 704th qwjhvbxi 594 96 23ms 6 Feb 2024 704th alfonsoalves 594 96 19ms 21 Jul 2024 704th jeff-re 594 96 18ms 1 Apr 2025 708th a-penton 588 97 16ms 22 Sep 2022 708th jrbud 588 97 19ms 6 Jan 2024 708th befoster 588 97 22ms 22 Feb 2024 708th joshua-el-samalouti 🇩🇪 588 97 20ms 26 May 2024 708th luca1339 588 97 19ms 10 Jun 2024 713th lukemalek 582 98 15ms 10 Oct 2022 713th UltimateGuy0987 582 98 20ms 14 Oct 2022 713th TheLazySquid 582 98 20ms 20 Dec 2022 713th StronkCheese 🇺🇸 582 98 21ms 13 Mar 2023 713th Anthony-Williams-06 582 98 27ms 17 Oct 2023 713th abcdhhhh 582 98 15ms 27 Aug 2024 713th OSYCh314 🇦🇺 582 98 26ms 16 Nov 2024 713th cole-wilson 582 98 18ms 9 Dec 2024 First Prev 641–720 of 848 Next Last