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 561st bonevbs 687 83 22ms 8 May 2022 561st feherd 687 83 19ms 20 May 2022 561st pbleich 687 83 24ms 24 Aug 2022 561st RoscoeSmith 687 83 26ms 20 Nov 2022 561st amadeusdotpng 687 83 19ms 22 Apr 2023 561st ross-i 687 83 19ms 5 Jul 2023 561st anonymaew 687 83 26ms 2 Aug 2023 561st mstang107 687 83 23ms 20 Dec 2023 561st LHLaurini 🇧🇷 687 83 18ms 26 Jun 2024 561st C0derX3 🇺🇸 687 83 22ms 18 Sep 2024 561st ComputerKWasTaken 🇺🇸 687 83 27ms 20 Jan 2025 561st Vexxter9 🇳🇱 687 83 58ms 4 Feb 2025 561st CodyKlingler 687 83 25ms 7 Feb 2025 561st OyuDays 687 83 21ms 17 Mar 2025 561st julianreece 687 83 23ms 29 Apr 2025 561st rustykitty 🇺🇸 687 83 22ms 24 Oct 2025 561st Kinkade76 687 83 36ms 4 Feb 2026 561st parthm2005 687 83 18ms 28 Feb 2026 561st Apfelvater 687 83 28ms 5 Mar 2026 561st kitotch 687 83 24ms 26 days ago 581st Feniske 🇫🇷 679 84 20ms 7 Oct 2022 581st Eilonlif 🇮🇱 679 84 23ms 29 Mar 2023 581st mhsaul 679 84 17ms 11 Apr 2023 581st Phyisis 679 84 22ms 30 Apr 2024 581st MaxCastella 🇫🇷 679 84 23ms 11 Oct 2024 581st SURAJMITTAL 679 84 17ms 17 Dec 2024 581st simplylu 679 84 20ms 5 Jan 2025 581st WillowWispy 679 84 22ms 14 Mar 2025 581st VedJosh 679 84 25ms 3 May 2025 581st hetz2625 679 84 25ms 4 May 2025 581st ottav14 679 84 21ms 1 Dec 2025 581st benanlam 679 84 21ms 24 Dec 2025 581st pph-2203 679 84 17ms 26 Feb 2026 594th aazuspan 671 85 19ms 15 Jun 2022 594th myleopard 671 85 22ms 20 Jul 2022 594th LukasFolwarczny 🇨🇿 671 85 26ms 16 Sep 2022 594th aaardwark 671 85 22ms 1 Jun 2025 594th kmathis22 671 85 20ms 10 Sep 2025 599th MichaelMBradley 🇨🇦 663 86 24ms 5 Jun 2022 599th Lemonz-13223 663 86 20ms 21 Sep 2022 599th Bodo171 663 86 25ms 24 Nov 2022 599th shibacho 🇯🇵 663 86 20ms 25 Nov 2022 599th Vaekor 663 86 20ms 9 Jul 2023 599th LeoVanderSteege 663 86 17ms 18 Nov 2023 599th Pale-Vessel 663 86 21ms 18 Dec 2023 599th tik25 663 86 25ms 28 Mar 2024 599th willschremmer 663 86 16ms 27 Apr 2024 599th jamiloBBKing 663 86 24ms 27 Jan 2025 599th AsishKunta 663 86 22ms 1 Apr 2025 599th Hemanthred2005 663 86 19ms 1 Apr 2025 599th Voltrifrodec 🇸🇰 663 86 23ms 19 Apr 2025 599th lurey99 663 86 18ms 23 Apr 2025 599th Alban-Boissard 663 86 23ms 14 Jun 2025 599th Aquateraneal 🇺🇸 663 86 17ms 8 Mar 2026 599th JNedd26 663 86 31ms 5 days ago 616th ToE42 655 87 18ms 19 Oct 2022 616th definitelyOmri 655 87 19ms 19 Oct 2022 616th Skallos-s 655 87 39ms 5 Dec 2022 616th damoc1es 655 87 19ms 16 Apr 2023 616th michelebastione 🇮🇹 655 87 26ms 20 Dec 2023 616th clampcorder 655 87 18ms 24 Jan 2024 616th GitQuick 655 87 20ms 23 Feb 2024 616th EricSchraf 655 87 19ms 21 Mar 2024 616th PotatoSaladOverlord 655 87 20ms 21 May 2025 616th Ibozz91 655 87 24ms 8 Jun 2025 616th chenyuan33 655 87 25ms 21 Feb 2026 627th Andre3582 648 88 17ms 29 Oct 2022 627th Darknova2468 648 88 19ms 20 Nov 2022 627th Solsticely 648 88 20ms 20 Nov 2022 627th goGuru 648 88 22ms 21 Dec 2022 627th msbranicky 648 88 38ms 9 Aug 2023 627th gussy420 648 88 20ms 28 Oct 2023 627th Shynif 648 88 22ms 21 Feb 2024 627th asterized 648 88 19ms 24 Aug 2024 627th hippopotam00sehead 🇨🇦 648 88 20ms 11 Sep 2024 627th 08jne01 648 88 16ms 21 Nov 2024 627th davidludwik2370 648 88 21ms 14 Sep 2025 627th kasarino 648 88 18ms 26 days ago 639th lovernj 640 89 24ms 23 Aug 2022 639th Roj 640 89 23ms 20 Nov 2022 First Prev 561–640 of 850 Next Last