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 721st Shanethegamer 🇺🇸 883 51 400ms 15 May 2023 722nd GrayJoKing 🇦🇺 883 84 35ms 19 Jun 2022 722nd primo-ppcg 🇹🇭 883 84 36ms 29 Jun 2022 722nd MeWhenI 🇻🇦 883 84 38ms 30 Dec 2025 725th emgordon154 883 97 117ms 3 Dec 2025 726th GrayJoKing 🇦🇺 882 60 183ms 24 Oct 2024 727th primo-ppcg 🇹🇭 882 193 107ms 14 Aug 2025 728th Shanethegamer 🇺🇸 881 73 145ms 8 May 2025 728th DialFrost 🇸🇬 881 73 149ms 3 Jun 2025 728th edsrzf 🇳🇿 881 73 144ms 4 Jul 2025 731st Shanethegamer 🇺🇸 881 142 1,441ms 27 Mar 2025 731st DialFrost 🇸🇬 881 142 1,421ms 28 Mar 2025 731st emgordon154 881 142 1,443ms 10 Apr 2025 731st GolfingSuccess 🇬🇷 881 142 1,431ms 6 Dec 2025 735th JayXon 🇺🇸 881 158 1,772ms 14 Sep 2025 736th dokutan 880 62 5ms 28 Apr 2025 737th johnnythedoggie 880 72 96ms 13 May 2022 737th kaascevich 880 72 96ms 8 Jul 2025 737th madeforlosers 880 72 102ms 22 days ago 740th CaedenHarper 🇨🇦 879 54 1,364ms 27 Sep 2025 740th sean-niemann 🇺🇸 879 54 1,464ms 27 Sep 2025 740th albanian-laundromat 🇺🇸 879 54 1,468ms 14 Nov 2025 740th xsot 🇸🇬 879 54 1,138ms 15 Nov 2025 744th Shanethegamer 🇺🇸 878 66 172ms 4 May 2022 744th scpchicken 🇵🇼 878 66 254ms 5 May 2022 744th sisyphus-ppcg 🇦🇺 878 66 173ms 6 May 2022 744th Natanaelel 🇸🇪 878 66 144ms 15 Jun 2022 744th Z-snails 878 66 254ms 27 Feb 2023 744th Jeremy-Stafford 878 66 258ms 27 Feb 2023 744th alomiF 878 66 287ms 1 Sep 2023 744th btnlq 878 66 145ms 17 Oct 2023 744th Shengxuan-Zhang 878 66 278ms 20 Feb 2026 753rd DialFrost 🇸🇬 878 86 40ms 24 Oct 2024 753rd stefangimmillaro 878 86 39ms 14 Jan 2025 755th c0d3-4-F00d 🇩🇪 877 61 12ms 6 May 2022 755th jackkav 877 61 14ms 26 Jun 2022 755th TechNolaByte 877 61 10ms 6 Jul 2022 755th Heathcorp 🇦🇺 877 61 13ms 17 Jul 2022 755th C0de5mith 🇺🇸 877 61 12ms 3 Aug 2022 755th sebipopa 🇷🇴 877 61 10ms 18 Aug 2022 755th moikaturns 🇬🇧 877 61 12ms 25 Sep 2022 755th FlorianCassayre 🇫🇷 877 61 11ms 27 Sep 2022 755th Mazn3k 877 61 12ms 1 Feb 2023 755th tvcv901 877 61 10ms 22 Mar 2023 755th unfinishedprogram 877 61 11ms 19 Jul 2023 755th snoozingnewt 🇨🇦 877 61 16ms 23 Sep 2023 755th funnyboy-roks 877 61 12ms 9 May 2024 755th bac0id 877 61 13ms 29 Jun 2024 755th FortuiteMan 🇫🇷 877 61 15ms 10 Oct 2024 755th RobertHoeh 877 61 13ms 5 Apr 2025 755th LvLError 877 61 11ms 29 May 2025 755th miles-evan 877 61 12ms 5 Aug 2025 755th alexsave 877 61 12ms 13 Oct 2025 755th jusaka 877 61 11ms 7 days ago 755th ComradeSquirrel 877 61 12ms 3 days ago 776th nwellnhof 🇩🇪 876 53 6ms 4 May 2022 776th GrayJoKing 🇦🇺 876 53 7ms 6 May 2022 778th c0d3-4-F00d 🇩🇪 876 89 364ms 5 May 2022 778th fkantelberg 876 89 351ms 15 Jul 2023 778th TRexOnGit 876 89 359ms 16 Feb 2024 781st inventshah 876 97 61ms 6 May 2022 781st roupiq 🇵🇱 876 97 59ms 22 Nov 2023 781st emgordon154 876 97 59ms 8 Feb 2026 784th MeWhenI 🇻🇦 876 110 346ms 9 Feb 2023 784th targrik 876 110 340ms 30 Jun 2025 786th DialFrost 🇸🇬 875 69 99ms 15 Jul 2024 787th AlephSquirrel 875 80 12ms 20 Apr 2023 787th ashtraypettingzoo 🇺🇸 875 80 14ms 1 Apr 2024 789th kg583 🇺🇸 875 105 13ms 26 days ago 789th Steffan153 🇫🇮 875 105 13ms 20 days ago 791st Irratix 🇳🇱 874 72 2ms 4 May 2022 791st m-tkach 🇺🇦 874 72 2ms 4 May 2022 791st jared-hughes 874 72 2ms 6 Jul 2022 791st michael-pruglo 🇺🇦 874 72 2ms 13 Jul 2022 791st Steffan153 🇫🇮 874 72 2ms 3 Jan 2023 791st MeWhenI 🇻🇦 874 72 2ms 7 May 2023 791st ListeriaM 874 72 2ms 22 Aug 2023 791st JohandeRuiter 🇳🇱 874 72 3ms 14 Sep 2024 791st larcherMTT 874 72 2ms 5 Oct 2024 791st snyderek 🇺🇸 874 72 2ms 19 Feb 2025 First Prev 721–800 of 3,672 Next Last