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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 Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Nim 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 Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Nim 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 99th bac0id 877 65 21ms 26 Sep 2023 99th robin-scragg 877 65 23ms 8 Jun 2025 99th RaBa21 🇭🇺 877 65 26ms 11 Jul 2025 99th TransformLikeATensor 877 65 21ms 17 Oct 2025 105th moustave 851 67 23ms 7 Nov 2024 106th Bubbler-4 838 68 15ms 15 Nov 2022 106th neel11235813 838 68 25ms 31 Dec 2022 106th Rubiksmath 838 68 17ms 14 Aug 2023 106th SB-945 838 68 24ms 7 Feb 2024 106th Languag3 838 68 16ms 1 Mar 2026 111th nwellnhof 🇩🇪 826 69 24ms 4 May 2022 111th GolfingSuccess 🇬🇷 826 69 19ms 5 May 2022 111th jared-hughes 826 69 18ms 5 May 2022 111th sisyphus-ppcg 🇦🇺 826 69 15ms 6 May 2022 111th lynn 826 69 17ms 22 Aug 2022 111th AlexanderFair 826 69 24ms 19 Jul 2023 111th AlephSquirrel 826 69 448ms 30 Dec 2023 111th davecame 826 69 24ms 20 Aug 2024 111th salvatore-abello 826 69 21ms 5 Sep 2024 111th zacjl 826 69 18ms 19 Sep 2024 111th kops-cg 826 69 24ms 9 Feb 2025 111th 4atj 826 69 3,516ms 30 Jun 2025 111th dirckvdende 826 69 17ms 11 Jul 2025 111th xnor-gate 826 69 17ms 19 Aug 2025 111th BrunoVisnadi 🇧🇷 826 69 23ms 1 Oct 2025 111th bizy-coder 826 69 16ms 21 Nov 2025 111th bricknellj 826 69 17ms 4 Dec 2025 111th Seek64 🇩🇪 826 69 17ms 26 Dec 2025 111th vang1ong7ang 826 69 16ms 2 days ago 130th MichalMarsalek 🇨🇿 814 70 22ms 5 May 2022 130th primo-ppcg 🇹🇭 814 70 26ms 5 May 2022 130th prplz 🇦🇺 814 70 20ms 5 May 2022 130th rak1507 🇬🇧 814 70 20ms 7 May 2022 130th inventshah 814 70 17ms 9 May 2022 130th k3w1k0d3r 814 70 19ms 22 Jun 2022 130th Bonjour27891 🇻🇳 814 70 20ms 14 Jul 2022 130th OllieBoyne 🇬🇧 814 70 21ms 19 Jul 2022 130th wen1now 814 70 21ms 8 Aug 2022 130th 051 🇸🇬 814 70 20ms 8 Aug 2022 130th Sp3000 🇦🇺 814 70 22ms 8 Aug 2022 130th betaveros 814 70 19ms 9 Aug 2022 130th shelerr 814 70 19ms 9 Sep 2022 130th stewSquared 🇺🇸 814 70 23ms 27 Sep 2022 130th myfatemi04 814 70 20ms 4 Nov 2022 130th kevinmchung 814 70 19ms 4 Nov 2022 130th fourth-bit 814 70 19ms 29 Nov 2022 130th aksyristos 814 70 20ms 25 Dec 2022 130th thizanne 814 70 20ms 27 Dec 2022 130th stefangimmillaro 814 70 22ms 6 Feb 2023 130th FieryIceStickie 814 70 20ms 3 Apr 2023 130th MeWhenI 🇻🇦 814 70 19ms 30 Apr 2023 130th kellantech 814 70 25ms 15 May 2023 130th InigoK 🇺🇸 814 70 21ms 14 Jun 2023 130th quimey 814 70 16ms 15 Jun 2023 130th janbehrens 🇩🇪 814 70 21ms 24 Nov 2023 130th namelessiw 814 70 19ms 9 Jan 2024 130th mathisfun271 814 70 20ms 13 Feb 2024 130th ThijsLuttikhuis 814 70 22ms 3 Mar 2024 130th jtaxen 814 70 23ms 1 Apr 2024 130th abc7-12 814 70 20ms 6 May 2024 130th ahmetdemirag 🇨🇾 814 70 19ms 9 Jun 2024 130th FranklinJiaChen 814 70 20ms 4 Jul 2024 130th 5cw 🇺🇸 814 70 20ms 13 Jul 2024 130th lgrandco 814 70 21ms 9 Oct 2024 130th snydej 814 70 21ms 21 Nov 2024 130th erikji 814 70 21ms 4 Feb 2025 130th CutSandstone 814 70 19ms 4 Feb 2025 130th xsot 🇸🇬 814 70 23ms 3 May 2025 130th smilesformiles3 814 70 22ms 14 Jun 2025 130th KasperKivimaeki 🇫🇮 814 70 20ms 30 Jun 2025 130th adaGrad1 814 70 20ms 10 Aug 2025 130th EthanJantz 814 70 21ms 10 Aug 2025 130th qpwoeirut 814 70 16ms 10 Aug 2025 130th intgrah 814 70 21ms 23 Sep 2025 130th ryyyn 🇺🇸 814 70 23ms 29 Oct 2025 130th bzijlema 🇳🇱 814 70 21ms 3 Dec 2025 130th blaztoma 🇱🇹 814 70 23ms 16 Feb 2026 130th Googolplexo 🇷🇺 814 70 19ms 25 Mar 2026 130th edsrzf 🇳🇿 814 70 23ms 21 days ago 130th Mikey-Beep 🇬🇧 814 70 31ms 18 days ago 181st StefanHabel 🇨🇦 803 71 20ms 29 Nov 2022 181st nstearns96 🇬🇧 803 71 25ms 11 Jan 2023 181st lelbal 803 71 20ms 26 Aug 2025 181st HETHAT 🇩🇿 803 71 23ms 23 Sep 2025 181st 09cf 803 71 17ms 18 Nov 2025 181st CommandLeo 🇮🇹 803 71 26ms 8 Jan 2026 181st scpchicken 🇵🇼 803 71 17ms 13 days ago 188th sultan 792 72 24ms 6 Jun 2022 188th BlankSpruce 792 72 24ms 9 Sep 2022 188th ValentinCassayre 792 72 21ms 8 Oct 2022 188th mathb0y512 792 72 24ms 1 Dec 2022 188th NoahBolohan 🇨🇦 792 72 24ms 28 Feb 2023 188th Kacarott 🇦🇺 792 72 16ms 24 Mar 2023 188th Fracture17 792 72 20ms 8 Apr 2023 188th ayushdewan 792 72 24ms 7 May 2023 188th cingulataluke 792 72 20ms 27 Aug 2023 188th PeterTillema 🇳🇱 792 72 25ms 17 Oct 2023 188th Glinte 792 72 25ms 11 Dec 2023 188th nanatsu8 792 72 25ms 11 May 2024 188th thej10n 792 72 19ms 12 Jun 2024 First Prev 101–200 of 853 Next Last