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 74th fkantelberg 905 63 18ms 14 Jul 2023 74th snoozingnewt 🇨🇦 905 63 25ms 10 Sep 2023 74th VictorStenvers 🇳🇱 905 63 21ms 13 Nov 2023 74th 1231234md5 🇨🇳 905 63 19ms 14 Dec 2023 74th f-tucker 905 63 22ms 6 Feb 2024 74th JunkIce 905 63 26ms 24 Nov 2024 74th Kowalskiexe 🇵🇱 905 63 21ms 19 Apr 2025 74th 123mjb 905 63 24ms 2 Jun 2025 74th DrakeSeteraO 905 63 60ms 24 Oct 2025 85th NerdyMcNerd42 891 64 18ms 26 Oct 2022 85th tpasfieldERAU 891 64 25ms 14 Nov 2022 85th CheeseCake628 🇳🇴 891 64 23ms 6 Jan 2023 85th adamnielson42 🇺🇸 891 64 20ms 25 Apr 2023 85th nathsou 🇫🇷 891 64 19ms 2 Sep 2023 85th zwxzwxzwx21 891 64 24ms 30 Jan 2024 85th steffan-polygolf 891 64 20ms 8 Mar 2024 85th Jacob385 891 64 56ms 4 Apr 2024 85th gallium-gonzollium 891 64 24ms 26 Aug 2024 94th yzhs 🇩🇪 877 65 20ms 16 Jun 2022 94th rollershutter 877 65 19ms 9 Sep 2022 94th bac0id 877 65 19ms 26 Sep 2023 94th robin-scragg 877 65 21ms 8 Jun 2025 94th RaBa21 🇭🇺 877 65 24ms 11 Jul 2025 94th TransformLikeATensor 877 65 19ms 17 Oct 2025 100th moustave 851 67 22ms 7 Nov 2024 101st Bubbler-4 838 68 15ms 15 Nov 2022 101st neel11235813 838 68 24ms 31 Dec 2022 101st Rubiksmath 838 68 15ms 14 Aug 2023 101st SB-945 838 68 25ms 7 Feb 2024 105th nwellnhof 🇩🇪 826 69 22ms 4 May 2022 105th GolfingSuccess 🇬🇷 826 69 17ms 5 May 2022 105th jared-hughes 826 69 17ms 5 May 2022 105th sisyphus-ppcg 🇦🇺 826 69 15ms 6 May 2022 105th lynn 826 69 17ms 22 Aug 2022 105th AlexanderFair 826 69 23ms 19 Jul 2023 105th AlephSquirrel 826 69 495ms 30 Dec 2023 105th davecame 826 69 29ms 20 Aug 2024 105th salvatore-abello 826 69 20ms 5 Sep 2024 105th zacjl 826 69 17ms 19 Sep 2024 105th kops-cg 826 69 23ms 9 Feb 2025 105th 4atj 826 69 3,354ms 30 Jun 2025 105th dirckvdende 826 69 16ms 11 Jul 2025 105th xnor-gate 826 69 16ms 19 Aug 2025 105th BrunoVisnadi 🇧🇷 826 69 23ms 1 Oct 2025 105th bizy-coder 826 69 17ms 14 days ago 105th bricknellj 826 69 18ms 23 hours ago 122nd MichalMarsalek 🇨🇿 814 70 22ms 5 May 2022 122nd primo-ppcg 🇹🇭 814 70 23ms 5 May 2022 122nd prplz 🇦🇺 814 70 19ms 5 May 2022 122nd rak1507 🇬🇧 814 70 19ms 7 May 2022 122nd inventshah 814 70 16ms 9 May 2022 122nd k3w1k0d3r 814 70 17ms 22 Jun 2022 122nd Bonjour27891 🇻🇳 814 70 19ms 14 Jul 2022 122nd OllieBoyne 🇬🇧 814 70 21ms 19 Jul 2022 122nd wen1now 814 70 19ms 8 Aug 2022 122nd 051 🇸🇬 814 70 18ms 8 Aug 2022 122nd Sp3000 🇦🇺 814 70 18ms 8 Aug 2022 122nd betaveros 814 70 18ms 9 Aug 2022 122nd shelerr 814 70 18ms 9 Sep 2022 122nd stewSquared 🇺🇸 814 70 18ms 27 Sep 2022 122nd myfatemi04 814 70 18ms 4 Nov 2022 122nd kevinmchung 814 70 18ms 4 Nov 2022 122nd fourth-bit 814 70 19ms 29 Nov 2022 122nd aksyristos 814 70 19ms 25 Dec 2022 122nd thizanne 814 70 19ms 27 Dec 2022 122nd stefangimmillaro 814 70 23ms 6 Feb 2023 122nd Seek64 🇩🇪 814 70 20ms 7 Feb 2023 122nd FieryIceStickie 814 70 19ms 3 Apr 2023 122nd MeWhenI 🇻🇦 814 70 21ms 30 Apr 2023 122nd kellantech 814 70 23ms 15 May 2023 122nd InigoK 🇺🇸 814 70 18ms 14 Jun 2023 122nd quimey 814 70 16ms 15 Jun 2023 122nd janbehrens 🇩🇪 814 70 20ms 24 Nov 2023 122nd namelessiw 814 70 18ms 9 Jan 2024 122nd mathisfun271 814 70 20ms 13 Feb 2024 First Prev 76–150 of 808 Next Last