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 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 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 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 Chars Time Submitted 122nd ThijsLuttikhuis 814 70 22ms 3 Mar 2024 122nd jtaxen 814 70 20ms 1 Apr 2024 122nd abc7-12 814 70 18ms 6 May 2024 122nd ahmetdemirag 🇨🇾 814 70 18ms 9 Jun 2024 122nd FranklinJiaChen 814 70 20ms 4 Jul 2024 122nd 5cw 🇺🇸 814 70 17ms 13 Jul 2024 122nd lgrandco 814 70 19ms 9 Oct 2024 122nd snydej 814 70 18ms 21 Nov 2024 122nd erikji 814 70 19ms 4 Feb 2025 122nd CutSandstone 814 70 21ms 4 Feb 2025 122nd xsot 🇸🇬 814 70 24ms 3 May 2025 122nd smilesformiles3 814 70 22ms 14 Jun 2025 122nd KasperKivimaeki 🇫🇮 814 70 21ms 30 Jun 2025 122nd adaGrad1 814 70 18ms 10 Aug 2025 122nd EthanJantz 814 70 19ms 10 Aug 2025 122nd qpwoeirut 814 70 16ms 10 Aug 2025 122nd intgrah 814 70 21ms 23 Sep 2025 122nd ryyyn 🇺🇸 814 70 20ms 29 Oct 2025 122nd bzijlema 🇳🇱 814 70 19ms 2 days ago 170th StefanHabel 🇨🇦 803 71 17ms 29 Nov 2022 170th nstearns96 🇬🇧 803 71 18ms 11 Jan 2023 170th lelbal 803 71 19ms 26 Aug 2025 170th HETHAT 🇩🇿 803 71 24ms 23 Sep 2025 170th 09cf 803 71 18ms 17 days ago 170th blaztoma 🇱🇹 803 71 29ms 10 days ago 170th Languag3 803 71 23ms 14 hours ago 177th scpchicken 🇵🇼 792 72 19ms 4 May 2022 177th sultan 792 72 18ms 6 Jun 2022 177th BlankSpruce 792 72 24ms 9 Sep 2022 177th ValentinCassayre 792 72 19ms 8 Oct 2022 177th mathb0y512 792 72 21ms 1 Dec 2022 177th NoahBolohan 🇨🇦 792 72 23ms 28 Feb 2023 177th Kacarott 🇦🇺 792 72 15ms 24 Mar 2023 177th Fracture17 792 72 19ms 8 Apr 2023 177th ayushdewan 792 72 24ms 7 May 2023 177th cingulataluke 792 72 19ms 27 Aug 2023 177th PeterTillema 🇳🇱 792 72 24ms 17 Oct 2023 177th Glinte 792 72 23ms 11 Dec 2023 177th nanatsu8 792 72 23ms 11 May 2024 177th thej10n 792 72 20ms 12 Jun 2024 177th tobeannouncd 792 72 16ms 25 Apr 2025 177th YAJUE114514 792 72 16ms 15 Aug 2025 193rd AdamHe17 781 73 19ms 31 May 2022 193rd AliceFord 781 73 20ms 2 Jun 2022 193rd Natanaelel 🇸🇪 781 73 17ms 16 Jun 2022 193rd marcin7Cd 781 73 20ms 27 Jun 2022 193rd vhoulbreque 🇫🇷 781 73 19ms 18 Aug 2022 193rd tkr-sh 🇰🇵 781 73 19ms 8 Sep 2022 193rd jroscoe5 781 73 20ms 15 Sep 2022 193rd OhmNomNom 781 73 23ms 7 Oct 2022 193rd 0-4849 781 73 19ms 1 Nov 2022 193rd M0PKOBKA 781 73 23ms 19 Dec 2022 193rd calumacutt 781 73 23ms 19 Dec 2022 193rd thehylian 781 73 20ms 2 Jan 2023 193rd fynnkroeger 781 73 23ms 6 Jan 2023 193rd hunt-g 781 73 19ms 4 Feb 2023 193rd jmerle 🇳🇱 781 73 19ms 16 Feb 2023 193rd TaserTheFox 🇺🇸 781 73 21ms 14 Mar 2023 193rd pinguicula 781 73 20ms 6 Apr 2023 193rd TheoKeller1 781 73 24ms 11 Jun 2023 193rd Mikey-Beep 🇬🇧 781 73 19ms 31 Aug 2023 193rd eiburns 781 73 22ms 9 Oct 2023 193rd htareque 781 73 20ms 13 Oct 2023 193rd wearsunscreen 781 73 20ms 18 Oct 2023 193rd Grrisly 781 73 20ms 10 Nov 2023 193rd m42km 781 73 20ms 11 Nov 2023 193rd GeneralPoxter 781 73 21ms 7 Dec 2023 193rd logvp 781 73 24ms 12 Jan 2024 193rd JoaoFelipe3 781 73 21ms 13 Jan 2024 193rd ehulinsky 🇺🇸 781 73 19ms 16 Feb 2024 193rd Lewenhaupt 781 73 19ms 23 Feb 2024 193rd stertooy 🇧🇪 781 73 19ms 9 Jun 2024 193rd jipsong 🇩🇪 781 73 22ms 23 Jul 2024 193rd mattyhempstead 781 73 21ms 6 Oct 2024 193rd wh3n3v3r 🇨🇿 781 73 18ms 18 Nov 2024 First Prev 151–225 of 808 Next Last