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 77th 1231234md5 🇨🇳 905 63 20ms 14 Dec 2023 77th f-tucker 905 63 23ms 6 Feb 2024 77th JunkIce 905 63 22ms 24 Nov 2024 77th Kowalskiexe 🇵🇱 905 63 19ms 19 Apr 2025 77th 123mjb 905 63 24ms 2 Jun 2025 77th DrakeSeteraO 905 63 52ms 24 Oct 2025 77th enigma 905 63 33ms 21 Dec 2025 77th ASampsonMu31 905 63 50ms 25 days ago 89th NerdyMcNerd42 891 64 20ms 26 Oct 2022 89th tpasfieldERAU 891 64 23ms 14 Nov 2022 89th CheeseCake628 🇳🇴 891 64 23ms 6 Jan 2023 89th adamnielson42 🇺🇸 891 64 19ms 25 Apr 2023 89th nathsou 🇫🇷 891 64 20ms 2 Sep 2023 89th zwxzwxzwx21 891 64 24ms 30 Jan 2024 89th steffan-polygolf 891 64 20ms 8 Mar 2024 89th Jacob385 891 64 59ms 4 Apr 2024 89th gallium-gonzollium 891 64 26ms 26 Aug 2024 98th yzhs 🇩🇪 877 65 20ms 16 Jun 2022 98th rollershutter 877 65 20ms 9 Sep 2022 98th bac0id 877 65 20ms 26 Sep 2023 98th robin-scragg 877 65 22ms 8 Jun 2025 98th RaBa21 🇭🇺 877 65 26ms 11 Jul 2025 98th TransformLikeATensor 877 65 19ms 17 Oct 2025 104th moustave 851 67 23ms 7 Nov 2024 105th Bubbler-4 838 68 15ms 15 Nov 2022 105th neel11235813 838 68 24ms 31 Dec 2022 105th Rubiksmath 838 68 15ms 14 Aug 2023 105th SB-945 838 68 24ms 7 Feb 2024 105th Languag3 838 68 16ms 1 Mar 2026 110th nwellnhof 🇩🇪 826 69 24ms 4 May 2022 110th GolfingSuccess 🇬🇷 826 69 17ms 5 May 2022 110th jared-hughes 826 69 17ms 5 May 2022 110th sisyphus-ppcg 🇦🇺 826 69 15ms 6 May 2022 110th lynn 826 69 18ms 22 Aug 2022 110th AlexanderFair 826 69 24ms 19 Jul 2023 110th AlephSquirrel 826 69 466ms 30 Dec 2023 110th davecame 826 69 23ms 20 Aug 2024 110th salvatore-abello 826 69 22ms 5 Sep 2024 110th zacjl 826 69 17ms 19 Sep 2024 110th kops-cg 826 69 22ms 9 Feb 2025 110th 4atj 826 69 3,504ms 30 Jun 2025 110th dirckvdende 826 69 17ms 11 Jul 2025 110th xnor-gate 826 69 17ms 19 Aug 2025 110th BrunoVisnadi 🇧🇷 826 69 24ms 1 Oct 2025 110th bizy-coder 826 69 16ms 21 Nov 2025 110th bricknellj 826 69 17ms 4 Dec 2025 110th Seek64 🇩🇪 826 69 17ms 26 Dec 2025 128th MichalMarsalek 🇨🇿 814 70 20ms 5 May 2022 128th primo-ppcg 🇹🇭 814 70 25ms 5 May 2022 128th prplz 🇦🇺 814 70 20ms 5 May 2022 128th rak1507 🇬🇧 814 70 20ms 7 May 2022 128th inventshah 814 70 18ms 9 May 2022 128th k3w1k0d3r 814 70 19ms 22 Jun 2022 128th Bonjour27891 🇻🇳 814 70 20ms 14 Jul 2022 128th OllieBoyne 🇬🇧 814 70 19ms 19 Jul 2022 128th wen1now 814 70 20ms 8 Aug 2022 128th 051 🇸🇬 814 70 19ms 8 Aug 2022 128th Sp3000 🇦🇺 814 70 20ms 8 Aug 2022 128th betaveros 814 70 19ms 9 Aug 2022 128th shelerr 814 70 20ms 9 Sep 2022 128th stewSquared 🇺🇸 814 70 20ms 27 Sep 2022 128th myfatemi04 814 70 18ms 4 Nov 2022 128th kevinmchung 814 70 19ms 4 Nov 2022 128th fourth-bit 814 70 19ms 29 Nov 2022 128th aksyristos 814 70 20ms 25 Dec 2022 128th thizanne 814 70 20ms 27 Dec 2022 128th stefangimmillaro 814 70 21ms 6 Feb 2023 128th FieryIceStickie 814 70 18ms 3 Apr 2023 128th MeWhenI 🇻🇦 814 70 19ms 30 Apr 2023 128th kellantech 814 70 24ms 15 May 2023 128th InigoK 🇺🇸 814 70 20ms 14 Jun 2023 128th quimey 814 70 16ms 15 Jun 2023 128th janbehrens 🇩🇪 814 70 21ms 24 Nov 2023 128th namelessiw 814 70 19ms 9 Jan 2024 128th mathisfun271 814 70 20ms 13 Feb 2024 128th ThijsLuttikhuis 814 70 20ms 3 Mar 2024 128th jtaxen 814 70 19ms 1 Apr 2024 128th abc7-12 814 70 20ms 6 May 2024 128th ahmetdemirag 🇨🇾 814 70 20ms 9 Jun 2024 128th FranklinJiaChen 814 70 18ms 4 Jul 2024 First Prev 81–160 of 846 Next Last