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 720th primo-ppcg 🇹🇭 884 84 36ms 29 Jun 2022 720th MeWhenI 🇻🇦 884 84 38ms 30 Dec 2025 723rd primo-ppcg 🇹🇭 884 193 107ms 14 Aug 2025 724th Shanethegamer 🇺🇸 883 51 400ms 15 May 2023 725th GrayJoKing 🇦🇺 883 60 183ms 24 Oct 2024 726th JayXon 🇺🇸 883 158 1,772ms 14 Sep 2025 727th Shanethegamer 🇺🇸 882 73 145ms 8 May 2025 727th DialFrost 🇸🇬 882 73 149ms 3 Jun 2025 727th edsrzf 🇳🇿 882 73 144ms 4 Jul 2025 730th CaedenHarper 🇨🇦 881 54 1,364ms 27 Sep 2025 730th sean-niemann 🇺🇸 881 54 1,464ms 27 Sep 2025 730th albanian-laundromat 🇺🇸 881 54 1,468ms 14 Nov 2025 730th xsot 🇸🇬 881 54 1,138ms 15 Nov 2025 734th dokutan 880 62 5ms 28 Apr 2025 735th johnnythedoggie 880 72 96ms 13 May 2022 735th kaascevich 880 72 96ms 8 Jul 2025 735th madeforlosers 880 72 102ms 25 days ago 738th Shanethegamer 🇺🇸 879 66 172ms 4 May 2022 738th scpchicken 🇵🇼 879 66 254ms 5 May 2022 738th sisyphus-ppcg 🇦🇺 879 66 173ms 6 May 2022 738th Natanaelel 🇸🇪 879 66 144ms 15 Jun 2022 738th Z-snails 879 66 254ms 27 Feb 2023 738th Jeremy-Stafford 879 66 258ms 27 Feb 2023 738th alomiF 879 66 287ms 1 Sep 2023 738th btnlq 879 66 145ms 17 Oct 2023 738th Shengxuan-Zhang 879 66 278ms 20 Feb 2026 747th DialFrost 🇸🇬 879 86 40ms 24 Oct 2024 747th stefangimmillaro 879 86 39ms 14 Jan 2025 749th madeforlosers 878 95 415ms 47 hours ago 750th kg583 🇺🇸 878 105 13ms 14 Mar 2026 750th Steffan153 🇫🇮 878 105 13ms 22 days ago 752nd nwellnhof 🇩🇪 877 53 6ms 4 May 2022 752nd GrayJoKing 🇦🇺 877 53 7ms 6 May 2022 754th c0d3-4-F00d 🇩🇪 877 61 12ms 6 May 2022 754th jackkav 877 61 14ms 26 Jun 2022 754th TechNolaByte 877 61 10ms 6 Jul 2022 754th Heathcorp 🇦🇺 877 61 13ms 17 Jul 2022 754th C0de5mith 🇺🇸 877 61 12ms 3 Aug 2022 754th sebipopa 🇷🇴 877 61 10ms 18 Aug 2022 754th moikaturns 🇬🇧 877 61 12ms 25 Sep 2022 754th FlorianCassayre 🇫🇷 877 61 11ms 27 Sep 2022 754th Mazn3k 877 61 12ms 1 Feb 2023 754th tvcv901 877 61 10ms 22 Mar 2023 754th unfinishedprogram 877 61 11ms 19 Jul 2023 754th snoozingnewt 🇨🇦 877 61 16ms 23 Sep 2023 754th funnyboy-roks 877 61 12ms 9 May 2024 754th bac0id 877 61 13ms 29 Jun 2024 754th FortuiteMan 🇫🇷 877 61 15ms 10 Oct 2024 754th RobertHoeh 877 61 13ms 5 Apr 2025 754th LvLError 877 61 11ms 29 May 2025 754th miles-evan 877 61 12ms 5 Aug 2025 754th alexsave 877 61 12ms 13 Oct 2025 754th ComradeSquirrel 877 61 12ms 5 days ago 774th AlephSquirrel 876 80 12ms 20 Apr 2023 774th ashtraypettingzoo 🇺🇸 876 80 14ms 1 Apr 2024 776th c0d3-4-F00d 🇩🇪 876 89 364ms 5 May 2022 776th fkantelberg 876 89 351ms 15 Jul 2023 776th TRexOnGit 876 89 359ms 16 Feb 2024 779th inventshah 876 97 61ms 6 May 2022 779th roupiq 🇵🇱 876 97 58ms 22 Nov 2023 779th emgordon154 876 97 59ms 8 Feb 2026 782nd Shanethegamer 🇺🇸 876 98 110ms 15 Apr 2025 782nd GolfingSuccess 🇬🇷 876 98 102ms 28 Nov 2025 782nd DialFrost 🇸🇬 876 98 109ms 1 Dec 2025 785th MeWhenI 🇻🇦 876 110 346ms 9 Feb 2023 785th targrik 876 110 340ms 30 Jun 2025 787th Shanethegamer 🇺🇸 876 142 1,461ms 27 Mar 2025 787th DialFrost 🇸🇬 876 142 1,432ms 28 Mar 2025 787th emgordon154 876 142 1,570ms 10 Apr 2025 787th GolfingSuccess 🇬🇷 876 142 1,813ms 6 Dec 2025 791st DialFrost 🇸🇬 875 69 99ms 15 Jul 2024 792nd Steffan153 🇫🇮 875 83 465ms 9 Apr 2023 792nd ovs-code 🇩🇪 875 83 57ms 1 Jul 2024 794th Irratix 🇳🇱 874 72 2ms 4 May 2022 794th m-tkach 🇺🇦 874 72 2ms 4 May 2022 794th jared-hughes 874 72 2ms 6 Jul 2022 794th michael-pruglo 🇺🇦 874 72 2ms 13 Jul 2022 794th Steffan153 🇫🇮 874 72 2ms 3 Jan 2023 794th MeWhenI 🇻🇦 874 72 2ms 7 May 2023 794th ListeriaM 874 72 2ms 22 Aug 2023 First Prev 721–800 of 3,727 Next Last