Collatz in Python in bytes. Cheevos Holes Recent Holes Langs Medals Misc 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 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 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 Erlang 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 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 Erlang 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 Tower of Hanoi Turtle Tutorial # Golfer Points Bytes Time Submitted 591st Upload-and-View 🇺🇦 708 89 27ms 20 Aug 2025 602nd StoverGitHub 700 90 29ms 16 Jun 2022 602nd jamespeilunli 700 90 23ms 4 Jul 2022 602nd TrentGlimp 700 90 18ms 3 Sep 2022 602nd Ugoran 700 90 20ms 19 Nov 2022 602nd PATTRIM 700 90 16ms 5 Jan 2023 602nd charliegaming 700 90 19ms 3 Oct 2023 602nd lhulinsky 700 90 18ms 22 Oct 2024 602nd bthalheim 700 90 21ms 6 Dec 2024 602nd nooby31415 700 90 18ms 18 Apr 2025 602nd SinArieh 700 90 24ms 4 May 2025 602nd islptng 700 90 22ms 7 Jul 2025 602nd Mr-McChicken 700 90 17ms 4 Oct 2025 614th AbelPelser 692 91 27ms 3 Jul 2022 614th Seis 692 91 20ms 9 Dec 2022 614th r-i-c-e 692 91 18ms 9 Jul 2023 614th joshcors 692 91 19ms 30 Jun 2024 614th resoNathan 692 91 16ms 9 Jul 2024 614th jameswmccarty 692 91 21ms 24 Sep 2024 614th hamilton-bonds 692 91 16ms 12 Nov 2024 614th Wonamm 692 91 26ms 14 Feb 2025 622nd TimLeffke 685 92 26ms 17 Aug 2022 622nd Rythoka 685 92 15ms 17 Oct 2022 622nd UriyaBA 685 92 16ms 19 Mar 2023 622nd VladislavGitter 🇪🇸 685 92 20ms 14 Nov 2023 622nd ridingqwerty 🇺🇸 685 92 15ms 22 Dec 2023 622nd Thonoton 685 92 19ms 1 Feb 2024 622nd OCNeve 685 92 18ms 17 Jun 2024 622nd themoonisacheese 685 92 22ms 25 Feb 2025 622nd BabySharkHi 685 92 20ms 22 Apr 2025 622nd arjunarya1 685 92 16ms 28 Aug 2025 622nd TJK-S 685 92 19ms 10 Oct 2025 633rd Bananapants22 677 93 26ms 4 Sep 2022 633rd jaxmattfair 🇺🇸 677 93 18ms 10 Jan 2023 633rd cingulataluke 677 93 18ms 27 Aug 2023 633rd fenix-bear 677 93 19ms 18 Nov 2023 633rd epic-programmer-guy 677 93 22ms 22 Dec 2023 633rd brimstonetrader 677 93 22ms 18 Nov 2024 639th atazzam 🇺🇸 670 94 17ms 18 May 2022 639th rohangpta 670 94 16ms 8 Aug 2022 639th shinylego 670 94 20ms 14 Sep 2022 639th sgaltair 670 94 20ms 4 Nov 2022 639th TotoAJ 670 94 17ms 15 Dec 2023 639th Gusic06 670 94 18ms 6 May 2024 639th kyleyarwood 670 94 20ms 6 Oct 2024 639th jj0786-cell 670 94 18ms 1 Apr 2025 639th griffinschreiber 670 94 19ms 1 Apr 2025 639th o800 670 94 20ms 2 days ago 649th felixcroc 663 95 19ms 30 Mar 2023 649th Pyro569 663 95 18ms 4 Jul 2023 649th rm-rf-innocence 663 95 19ms 19 Dec 2023 649th Bit125 663 95 18ms 30 Jan 2024 649th aalec 663 95 24ms 25 Apr 2024 649th strogor 663 95 19ms 13 Jun 2025 649th cthierfelder 🇲🇨 663 95 18ms 17 Jul 2025 649th ThomasDelepine 663 95 21ms 22 days ago 657th karhuthebear 656 96 23ms 9 May 2022 657th qwjhvbxi 656 96 20ms 6 Feb 2024 657th alfonsoalves 656 96 18ms 21 Jul 2024 657th jeff-re 656 96 14ms 1 Apr 2025 661st a-penton 649 97 19ms 22 Sep 2022 661st jrbud 649 97 18ms 6 Jan 2024 661st befoster 649 97 21ms 22 Feb 2024 661st joshua-el-samalouti 🇩🇪 649 97 18ms 26 May 2024 661st luca1339 649 97 18ms 10 Jun 2024 666th lukemalek 643 98 14ms 10 Oct 2022 666th UltimateGuy0987 643 98 18ms 14 Oct 2022 666th TheLazySquid 643 98 20ms 20 Dec 2022 666th StronkCheese 🇺🇸 643 98 28ms 13 Mar 2023 666th Anthony-Williams-06 643 98 27ms 17 Oct 2023 666th NoneTheFewer 643 98 21ms 17 May 2024 666th abcdhhhh 643 98 14ms 27 Aug 2024 666th OSYCh314 🇦🇺 643 98 23ms 16 Nov 2024 666th cole-wilson 643 98 18ms 9 Dec 2024 666th Akilles1 643 98 18ms 15 May 2025 First Prev 601–675 of 804 Next Last