Collatz in Python in bytes. 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 ><> ALGOL 68 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 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 ><> ALGOL 68 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 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 Bytes Time Submitted 638th joshcors 692 91 17ms 30 Jun 2024 638th resoNathan 692 91 16ms 9 Jul 2024 638th jameswmccarty 692 91 20ms 24 Sep 2024 638th hamilton-bonds 692 91 17ms 12 Nov 2024 638th Wonamm 692 91 29ms 14 Feb 2025 646th TimLeffke 685 92 22ms 17 Aug 2022 646th Rythoka 685 92 15ms 17 Oct 2022 646th UriyaBA 685 92 17ms 19 Mar 2023 646th VladislavGitter 🇪🇸 685 92 19ms 14 Nov 2023 646th ridingqwerty 🇺🇸 685 92 16ms 22 Dec 2023 646th Thonoton 685 92 19ms 1 Feb 2024 646th OCNeve 685 92 20ms 17 Jun 2024 646th themoonisacheese 685 92 24ms 25 Feb 2025 646th BabySharkHi 685 92 23ms 22 Apr 2025 646th arjunarya1 685 92 16ms 28 Aug 2025 646th TJK-S 685 92 19ms 10 Oct 2025 657th Bananapants22 677 93 26ms 4 Sep 2022 657th jaxmattfair 🇺🇸 677 93 19ms 10 Jan 2023 657th cingulataluke 677 93 20ms 27 Aug 2023 657th fenix-bear 677 93 20ms 18 Nov 2023 657th epic-programmer-guy 677 93 22ms 22 Dec 2023 657th brimstonetrader 677 93 24ms 18 Nov 2024 657th HunterC14 677 93 26ms 11 days ago 664th atazzam 🇺🇸 670 94 17ms 18 May 2022 664th rohangpta 670 94 17ms 8 Aug 2022 664th shinylego 670 94 19ms 14 Sep 2022 664th sgaltair 670 94 20ms 4 Nov 2022 664th TotoAJ 670 94 20ms 15 Dec 2023 664th Gusic06 670 94 19ms 6 May 2024 664th kyleyarwood 670 94 21ms 6 Oct 2024 664th jj0786-cell 670 94 20ms 1 Apr 2025 664th griffinschreiber 670 94 20ms 1 Apr 2025 664th o800 670 94 20ms 17 Nov 2025 674th felixcroc 663 95 19ms 30 Mar 2023 674th Pyro569 663 95 18ms 4 Jul 2023 674th rm-rf-innocence 663 95 20ms 19 Dec 2023 674th Bit125 663 95 19ms 30 Jan 2024 674th aalec 663 95 21ms 25 Apr 2024 674th strogor 663 95 20ms 13 Jun 2025 674th cthierfelder 🇲🇨 663 95 20ms 17 Jul 2025 674th ThomasDelepine 663 95 21ms 29 Oct 2025 682nd karhuthebear 656 96 24ms 9 May 2022 682nd qwjhvbxi 656 96 21ms 6 Feb 2024 682nd alfonsoalves 656 96 20ms 21 Jul 2024 682nd jeff-re 656 96 14ms 1 Apr 2025 686th a-penton 649 97 17ms 22 Sep 2022 686th jrbud 649 97 19ms 6 Jan 2024 686th befoster 649 97 22ms 22 Feb 2024 686th joshua-el-samalouti 🇩🇪 649 97 19ms 26 May 2024 686th luca1339 649 97 20ms 10 Jun 2024 691st lukemalek 643 98 14ms 10 Oct 2022 691st UltimateGuy0987 643 98 20ms 14 Oct 2022 691st TheLazySquid 643 98 21ms 20 Dec 2022 691st StronkCheese 🇺🇸 643 98 20ms 13 Mar 2023 691st Anthony-Williams-06 643 98 27ms 17 Oct 2023 691st abcdhhhh 643 98 15ms 27 Aug 2024 691st OSYCh314 🇦🇺 643 98 26ms 16 Nov 2024 691st cole-wilson 643 98 19ms 9 Dec 2024 691st Akilles1 643 98 20ms 15 May 2025 691st Hyperoplex145 643 98 21ms 11 Nov 2025 701st LukeRichardson-dev 636 99 15ms 12 May 2022 701st Tagfox 636 99 20ms 18 Jul 2022 701st gabrielsqw 636 99 23ms 24 Oct 2023 701st sciencedjinn 636 99 19ms 8 Nov 2024 701st MrNiknoc 636 99 18ms 15 Jun 2025 706th OppositeShark 630 100 18ms 19 Jul 2022 706th NOS4A5I 630 100 18ms 10 Jan 2023 706th lomarbrick 630 100 18ms 16 May 2023 706th karlaacastro44 630 100 18ms 5 May 2025 710th markus-rekdal 624 101 23ms 10 May 2022 710th fraserli 🇦🇺 624 101 23ms 2 May 2023 710th FCORMERAIS 624 101 19ms 6 Mar 2024 710th yhm138 624 101 14ms 16 Feb 2025 710th MinecraftFan69420 624 101 21ms 31 Oct 2025 715th PogLop 🇨🇿 618 102 20ms 31 Oct 2022 715th AndersH3 🇸🇪 618 102 16ms 17 May 2023 715th JulieGermainUNT 618 102 19ms 2 Apr 2025 715th NicoBliss 618 102 23ms 16 Nov 2025 719th enbyte 612 103 19ms 20 Dec 2022 719th rajlath 612 103 19ms 7 Jan 2023 First Prev 641–720 of 827 Next Last
