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 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 NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Tower of Hanoi 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 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 NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Chars Time Submitted 597th VV1Git 640 89 23ms 28 Mar 2023 597th dranjohn 640 89 20ms 17 Sep 2023 597th ArenaGrenade 640 89 23ms 19 Feb 2024 597th NanduBC 640 89 20ms 6 Sep 2024 597th TheAtrossian 640 89 19ms 5 Jan 2025 597th KimJua41 640 89 19ms 4 May 2025 597th Upload-and-View 🇺🇦 640 89 27ms 20 Aug 2025 608th StoverGitHub 633 90 29ms 16 Jun 2022 608th jamespeilunli 633 90 23ms 4 Jul 2022 608th TrentGlimp 633 90 18ms 3 Sep 2022 608th Ugoran 633 90 20ms 19 Nov 2022 608th PATTRIM 633 90 16ms 5 Jan 2023 608th charliegaming 633 90 19ms 3 Oct 2023 608th lhulinsky 633 90 18ms 22 Oct 2024 608th bthalheim 633 90 21ms 6 Dec 2024 608th SinArieh 633 90 24ms 4 May 2025 608th islptng 633 90 22ms 7 Jul 2025 608th Mr-McChicken 633 90 17ms 4 Oct 2025 619th AbelPelser 626 91 27ms 3 Jul 2022 619th Seis 626 91 20ms 9 Dec 2022 619th r-i-c-e 626 91 18ms 9 Jul 2023 619th joshcors 626 91 19ms 30 Jun 2024 619th resoNathan 626 91 16ms 9 Jul 2024 619th jameswmccarty 626 91 21ms 24 Sep 2024 619th hamilton-bonds 626 91 16ms 12 Nov 2024 619th Wonamm 626 91 26ms 14 Feb 2025 627th TimLeffke 620 92 26ms 17 Aug 2022 627th Rythoka 620 92 15ms 17 Oct 2022 627th UriyaBA 620 92 16ms 19 Mar 2023 627th VladislavGitter 🇪🇸 620 92 20ms 14 Nov 2023 627th ridingqwerty 🇺🇸 620 92 15ms 22 Dec 2023 627th Thonoton 620 92 19ms 1 Feb 2024 627th OCNeve 620 92 18ms 17 Jun 2024 627th themoonisacheese 620 92 22ms 25 Feb 2025 627th BabySharkHi 620 92 20ms 22 Apr 2025 627th arjunarya1 620 92 16ms 28 Aug 2025 627th TJK-S 620 92 19ms 10 Oct 2025 638th Bananapants22 613 93 26ms 4 Sep 2022 638th jaxmattfair 🇺🇸 613 93 18ms 10 Jan 2023 638th fenix-bear 613 93 19ms 18 Nov 2023 638th epic-programmer-guy 613 93 22ms 22 Dec 2023 638th brimstonetrader 613 93 22ms 18 Nov 2024 643rd atazzam 🇺🇸 606 94 17ms 18 May 2022 643rd rohangpta 606 94 16ms 8 Aug 2022 643rd shinylego 606 94 20ms 14 Sep 2022 643rd sgaltair 606 94 20ms 4 Nov 2022 643rd TotoAJ 606 94 17ms 15 Dec 2023 643rd Gusic06 606 94 18ms 6 May 2024 643rd kyleyarwood 606 94 20ms 6 Oct 2024 643rd jj0786-cell 606 94 18ms 1 Apr 2025 643rd griffinschreiber 606 94 19ms 1 Apr 2025 643rd o800 606 94 18ms 9 days ago 653rd felixcroc 600 95 19ms 30 Mar 2023 653rd Pyro569 600 95 18ms 4 Jul 2023 653rd rm-rf-innocence 600 95 19ms 19 Dec 2023 653rd Bit125 600 95 18ms 30 Jan 2024 653rd aalec 600 95 24ms 25 Apr 2024 653rd strogor 600 95 19ms 13 Jun 2025 653rd cthierfelder 🇲🇨 600 95 18ms 17 Jul 2025 653rd ThomasDelepine 600 95 21ms 29 Oct 2025 661st karhuthebear 594 96 23ms 9 May 2022 661st qwjhvbxi 594 96 20ms 6 Feb 2024 661st alfonsoalves 594 96 18ms 21 Jul 2024 661st jeff-re 594 96 14ms 1 Apr 2025 665th a-penton 588 97 19ms 22 Sep 2022 665th jrbud 588 97 18ms 6 Jan 2024 665th befoster 588 97 21ms 22 Feb 2024 665th joshua-el-samalouti 🇩🇪 588 97 18ms 26 May 2024 665th luca1339 588 97 18ms 10 Jun 2024 670th lukemalek 582 98 14ms 10 Oct 2022 670th UltimateGuy0987 582 98 18ms 14 Oct 2022 670th TheLazySquid 582 98 20ms 20 Dec 2022 670th StronkCheese 🇺🇸 582 98 28ms 13 Mar 2023 670th Anthony-Williams-06 582 98 27ms 17 Oct 2023 670th NoneTheFewer 582 98 21ms 17 May 2024 First Prev 601–675 of 806 Next Last