Collatz in all languages 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 646th Googolplexo 🇷🇺 884 70 19ms 25 days ago 646th edsrzf 🇳🇿 884 70 23ms 14 days ago 646th Mikey-Beep 🇬🇧 884 70 31ms 11 days ago 724th GrayJoKing 🇦🇺 884 84 35ms 19 Jun 2022 724th primo-ppcg 🇹🇭 884 84 36ms 29 Jun 2022 724th MeWhenI 🇻🇦 884 84 38ms 30 Dec 2025 727th primo-ppcg 🇹🇭 884 193 107ms 14 Aug 2025 728th Shanethegamer 🇺🇸 883 51 532ms 15 May 2023 729th GrayJoKing 🇦🇺 883 60 157ms 24 Oct 2024 730th Shanethegamer 🇺🇸 882 73 145ms 8 May 2025 730th DialFrost 🇸🇬 882 73 149ms 3 Jun 2025 730th edsrzf 🇳🇿 882 73 144ms 4 Jul 2025 733rd CaedenHarper 🇨🇦 881 54 1,364ms 27 Sep 2025 733rd sean-niemann 🇺🇸 881 54 1,464ms 27 Sep 2025 733rd albanian-laundromat 🇺🇸 881 54 1,468ms 14 Nov 2025 733rd xsot 🇸🇬 881 54 1,138ms 15 Nov 2025 737th Shanethegamer 🇺🇸 881 142 1,426ms 27 Mar 2025 737th DialFrost 🇸🇬 881 142 1,438ms 28 Mar 2025 737th emgordon154 881 142 1,620ms 10 Apr 2025 737th GolfingSuccess 🇬🇷 881 142 1,440ms 6 Dec 2025 741st dokutan 880 62 5ms 28 Apr 2025 742nd johnnythedoggie 880 72 102ms 13 May 2022 742nd kaascevich 880 72 106ms 8 Jul 2025 742nd madeforlosers 880 72 97ms 17 Mar 2026 745th Shanethegamer 🇺🇸 879 66 172ms 4 May 2022 745th scpchicken 🇵🇼 879 66 254ms 5 May 2022 745th sisyphus-ppcg 🇦🇺 879 66 173ms 6 May 2022 745th Natanaelel 🇸🇪 879 66 144ms 15 Jun 2022 745th Z-snails 879 66 254ms 27 Feb 2023 745th Jeremy-Stafford 879 66 258ms 27 Feb 2023 745th alomiF 879 66 287ms 1 Sep 2023 745th btnlq 879 66 145ms 17 Oct 2023 745th Shengxuan-Zhang 879 66 278ms 20 Feb 2026 754th DialFrost 🇸🇬 879 86 40ms 24 Oct 2024 754th stefangimmillaro 879 86 39ms 14 Jan 2025 756th madeforlosers 878 95 415ms 10 days ago 757th kg583 🇺🇸 878 105 11ms 14 Mar 2026 757th Steffan153 🇫🇮 878 105 12ms 19 Mar 2026 759th nwellnhof 🇩🇪 877 53 6ms 4 May 2022 759th GrayJoKing 🇦🇺 877 53 7ms 6 May 2022 761st c0d3-4-F00d 🇩🇪 877 61 19ms 6 May 2022 761st jackkav 877 61 12ms 26 Jun 2022 761st TechNolaByte 877 61 14ms 6 Jul 2022 761st Heathcorp 🇦🇺 877 61 14ms 17 Jul 2022 761st C0de5mith 🇺🇸 877 61 12ms 3 Aug 2022 761st sebipopa 🇷🇴 877 61 14ms 18 Aug 2022 761st moikaturns 🇬🇧 877 61 11ms 25 Sep 2022 761st FlorianCassayre 🇫🇷 877 61 12ms 27 Sep 2022 761st Mazn3k 877 61 12ms 1 Feb 2023 761st tvcv901 877 61 16ms 22 Mar 2023 761st unfinishedprogram 877 61 16ms 19 Jul 2023 761st snoozingnewt 🇨🇦 877 61 11ms 23 Sep 2023 761st funnyboy-roks 877 61 11ms 9 May 2024 761st bac0id 877 61 11ms 29 Jun 2024 761st FortuiteMan 🇫🇷 877 61 11ms 10 Oct 2024 761st RobertHoeh 877 61 11ms 5 Apr 2025 761st LvLError 877 61 12ms 29 May 2025 761st miles-evan 877 61 11ms 5 Aug 2025 761st alexsave 877 61 11ms 13 Oct 2025 761st ComradeSquirrel 877 61 12ms 14 days ago 781st AlephSquirrel 876 80 12ms 20 Apr 2023 781st ashtraypettingzoo 🇺🇸 876 80 14ms 1 Apr 2024 783rd c0d3-4-F00d 🇩🇪 876 89 417ms 5 May 2022 783rd fkantelberg 876 89 399ms 15 Jul 2023 783rd TRexOnGit 876 89 388ms 16 Feb 2024 786th inventshah 876 97 61ms 6 May 2022 786th emgordon154 876 97 59ms 8 Feb 2026 788th Shanethegamer 🇺🇸 876 98 110ms 15 Apr 2025 788th GolfingSuccess 🇬🇷 876 98 102ms 28 Nov 2025 788th DialFrost 🇸🇬 876 98 109ms 1 Dec 2025 791st MeWhenI 🇻🇦 876 110 346ms 9 Feb 2023 791st targrik 876 110 340ms 30 Jun 2025 793rd DialFrost 🇸🇬 875 69 99ms 15 Jul 2024 794th Steffan153 🇫🇮 875 83 465ms 9 Apr 2023 794th ovs-code 🇩🇪 875 83 57ms 1 Jul 2024 796th Irratix 🇳🇱 874 72 2ms 4 May 2022 796th m-tkach 🇺🇦 874 72 2ms 4 May 2022 796th jared-hughes 874 72 2ms 6 Jul 2022 796th michael-pruglo 🇺🇦 874 72 2ms 13 Jul 2022 796th Steffan153 🇫🇮 874 72 2ms 3 Jan 2023 First Prev 721–800 of 3,757 Next Last