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 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 Bytes Time Submitted 714th cole-wilson 643 98 18ms 9 Dec 2024 714th Akilles1 643 98 20ms 15 May 2025 714th Hyperoplex145 643 98 20ms 11 Nov 2025 724th LukeRichardson-dev 636 99 16ms 12 May 2022 724th Tagfox 636 99 20ms 18 Jul 2022 724th gabrielsqw 636 99 25ms 24 Oct 2023 724th sciencedjinn 636 99 17ms 8 Nov 2024 724th MrNiknoc 636 99 21ms 15 Jun 2025 729th OppositeShark 630 100 19ms 19 Jul 2022 729th NOS4A5I 630 100 19ms 10 Jan 2023 729th lomarbrick 630 100 19ms 16 May 2023 729th karlaacastro44 630 100 24ms 5 May 2025 733rd markus-rekdal 624 101 24ms 10 May 2022 733rd fraserli 🇦🇺 624 101 24ms 2 May 2023 733rd FCORMERAIS 624 101 19ms 6 Mar 2024 733rd yhm138 624 101 14ms 16 Feb 2025 733rd MinecraftFan69420 624 101 22ms 31 Oct 2025 738th PogLop 🇨🇿 618 102 19ms 31 Oct 2022 738th AndersH3 🇸🇪 618 102 15ms 17 May 2023 738th JulieGermainUNT 618 102 20ms 2 Apr 2025 738th NicoBliss 618 102 24ms 16 Nov 2025 742nd enbyte 612 103 21ms 20 Dec 2022 742nd rajlath 612 103 19ms 7 Jan 2023 742nd mnurzia 612 103 16ms 12 Oct 2023 742nd sqrteipi 612 103 21ms 2 Apr 2024 742nd calum12345 612 103 21ms 26 Mar 2025 747th winigo3 606 104 24ms 8 Aug 2022 747th zt14427 606 104 22ms 30 Apr 2023 747th IoLimmer 606 104 17ms 24 Jul 2024 747th Deneb999 606 104 25ms 26 Feb 2026 751st LordSir101 600 105 17ms 19 Jul 2022 751st tmanternach 600 105 24ms 24 Nov 2022 751st weber-hge 600 105 17ms 13 Jun 2023 751st Eugen-str 600 105 19ms 24 Oct 2023 755th ms-tingliang 594 106 16ms 5 Aug 2022 755th achilleasr 594 106 23ms 7 Nov 2022 755th OleBrumm 594 106 20ms 8 Jan 2023 755th AbhilashaTandon 594 106 20ms 19 Sep 2023 755th sheeperino 🇮🇹 594 106 21ms 11 Oct 2024 760th phpboyscout 589 107 17ms 18 May 2023 760th DrPrettyman 589 107 16ms 5 Jul 2023 760th joseph-w0ng 589 107 15ms 5 Jul 2024 760th EnisEfe0 589 107 21ms 18 May 2025 764th landyrisbad 583 108 21ms 13 Nov 2022 764th cakular 583 108 29ms 17 May 2024 764th glassala 583 108 13ms 25 Oct 2024 764th CarterStroik 583 108 19ms 12 Nov 2025 768th tjefferson401 578 109 28ms 16 Sep 2022 768th ariesmarinus 578 109 16ms 21 Nov 2024 770th profJGermain 573 110 21ms 7 Feb 2024 770th JMMMMC 573 110 20ms 23 Oct 2024 770th jtb0362 573 110 19ms 10 May 2025 773rd sagnik3 563 112 20ms 8 Aug 2022 773rd craftablescience 563 112 16ms 19 Sep 2023 775th kelseychristensen 558 113 20ms 2 Nov 2022 775th ArmsTheLimited 558 113 15ms 1 Jun 2023 777th jstechman 548 115 19ms 24 Feb 2024 777th dan422442 548 115 19ms 19 Oct 2024 779th keelanfh 543 116 15ms 20 Dec 2023 779th returnitynet 543 116 19ms 27 Jan 2025 779th EthanPatel01000101 543 116 16ms 20 Oct 2025 782nd gioto64 538 117 17ms 8 Dec 2022 782nd WilfredSalmon 538 117 16ms 21 Oct 2023 784th XianchengZ 534 118 19ms 18 Aug 2023 784th brindak2005 534 118 17ms 2 May 2025 786th jmmographer 516 122 20ms 21 Oct 2023 786th RucatJ 516 122 17ms 8 Aug 2025 788th xbxbxb007 512 123 22ms 10 Jan 2024 789th kevinnaviapaiva 488 129 16ms 20 Feb 2025 790th AdrianN001 485 130 17ms 6 Aug 2023 791st wyatt-the-hump 481 131 17ms 24 Dec 2022 791st hotmanga 481 131 14ms 20 Oct 2023 791st Jordynar02 481 131 18ms 3 May 2025 794th Zach10za 474 133 22ms 23 Jan 2024 795th vtilde 470 134 18ms 8 Jan 2024 796th fig-apple 467 135 12ms 24 Jun 2023 797th S-Ruban 460 137 15ms 25 Feb 2023 798th FLOKI0421 453 139 17ms 4 May 2025 798th noahdorsch 453 139 22ms 5 May 2025 800th bartsowka2000 423 149 22ms 10 Jul 2023 First Prev 721–800 of 851 Next Last
