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 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 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 Apéry’s Constant Binary Lambda Calculus 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 NFA Simulator Numbrix 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 ArkScript 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 ><> 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 ArkScript 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 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 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 Apéry’s Constant Binary Lambda Calculus 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 NFA Simulator Numbrix 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 640th Seis 626 91 19ms 9 Dec 2022 640th r-i-c-e 626 91 20ms 9 Jul 2023 640th joshcors 626 91 17ms 30 Jun 2024 640th resoNathan 626 91 16ms 9 Jul 2024 640th jameswmccarty 626 91 20ms 24 Sep 2024 640th hamilton-bonds 626 91 17ms 12 Nov 2024 640th Wonamm 626 91 29ms 14 Feb 2025 648th TimLeffke 620 92 22ms 17 Aug 2022 648th Rythoka 620 92 15ms 17 Oct 2022 648th UriyaBA 620 92 17ms 19 Mar 2023 648th VladislavGitter 🇪🇸 620 92 19ms 14 Nov 2023 648th ridingqwerty 🇺🇸 620 92 16ms 22 Dec 2023 648th Thonoton 620 92 19ms 1 Feb 2024 648th OCNeve 620 92 20ms 17 Jun 2024 648th themoonisacheese 620 92 24ms 25 Feb 2025 648th BabySharkHi 620 92 23ms 22 Apr 2025 648th arjunarya1 620 92 16ms 28 Aug 2025 648th TJK-S 620 92 19ms 10 Oct 2025 659th Bananapants22 613 93 26ms 4 Sep 2022 659th jaxmattfair 🇺🇸 613 93 19ms 10 Jan 2023 659th fenix-bear 613 93 20ms 18 Nov 2023 659th epic-programmer-guy 613 93 22ms 22 Dec 2023 659th brimstonetrader 613 93 24ms 18 Nov 2024 659th HunterC14 613 93 26ms 11 days ago 665th atazzam 🇺🇸 606 94 17ms 18 May 2022 665th rohangpta 606 94 17ms 8 Aug 2022 665th shinylego 606 94 19ms 14 Sep 2022 665th sgaltair 606 94 20ms 4 Nov 2022 665th TotoAJ 606 94 20ms 15 Dec 2023 665th Gusic06 606 94 19ms 6 May 2024 665th kyleyarwood 606 94 21ms 6 Oct 2024 665th jj0786-cell 606 94 20ms 1 Apr 2025 665th griffinschreiber 606 94 20ms 1 Apr 2025 665th o800 606 94 20ms 17 Nov 2025 675th felixcroc 600 95 19ms 30 Mar 2023 675th Pyro569 600 95 18ms 4 Jul 2023 675th rm-rf-innocence 600 95 20ms 19 Dec 2023 675th Bit125 600 95 19ms 30 Jan 2024 675th aalec 600 95 21ms 25 Apr 2024 675th strogor 600 95 20ms 13 Jun 2025 675th cthierfelder 🇲🇨 600 95 20ms 17 Jul 2025 675th ThomasDelepine 600 95 21ms 29 Oct 2025 683rd karhuthebear 594 96 24ms 9 May 2022 683rd qwjhvbxi 594 96 21ms 6 Feb 2024 683rd alfonsoalves 594 96 20ms 21 Jul 2024 683rd jeff-re 594 96 14ms 1 Apr 2025 687th a-penton 588 97 17ms 22 Sep 2022 687th jrbud 588 97 19ms 6 Jan 2024 687th befoster 588 97 22ms 22 Feb 2024 687th joshua-el-samalouti 🇩🇪 588 97 19ms 26 May 2024 687th luca1339 588 97 20ms 10 Jun 2024 692nd lukemalek 582 98 14ms 10 Oct 2022 692nd UltimateGuy0987 582 98 20ms 14 Oct 2022 692nd TheLazySquid 582 98 21ms 20 Dec 2022 692nd StronkCheese 🇺🇸 582 98 20ms 13 Mar 2023 692nd Anthony-Williams-06 582 98 27ms 17 Oct 2023 692nd abcdhhhh 582 98 15ms 27 Aug 2024 692nd OSYCh314 🇦🇺 582 98 26ms 16 Nov 2024 692nd cole-wilson 582 98 19ms 9 Dec 2024 692nd Akilles1 582 98 20ms 15 May 2025 692nd Hyperoplex145 582 98 21ms 11 Nov 2025 702nd LukeRichardson-dev 576 99 15ms 12 May 2022 702nd Tagfox 576 99 20ms 18 Jul 2022 702nd gabrielsqw 576 99 23ms 24 Oct 2023 702nd sciencedjinn 576 99 19ms 8 Nov 2024 702nd MrNiknoc 576 99 18ms 15 Jun 2025 707th OppositeShark 570 100 18ms 19 Jul 2022 707th NOS4A5I 570 100 18ms 10 Jan 2023 707th lomarbrick 570 100 18ms 16 May 2023 707th karlaacastro44 570 100 18ms 5 May 2025 711th markus-rekdal 564 101 23ms 10 May 2022 711th fraserli 🇦🇺 564 101 23ms 2 May 2023 711th FCORMERAIS 564 101 19ms 6 Mar 2024 711th yhm138 564 101 14ms 16 Feb 2025 711th MinecraftFan69420 564 101 21ms 31 Oct 2025 716th AndersH3 🇸🇪 559 102 16ms 17 May 2023 716th JulieGermainUNT 559 102 19ms 2 Apr 2025 716th NicoBliss 559 102 23ms 16 Nov 2025 719th rajlath 553 103 19ms 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