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 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 ><> 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 ALGOL 68 APL ArkScript Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> 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 ALGOL 68 APL ArkScript Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 66th coreynash 956 56 12ms 6 Oct 2023 66th dylanarmstrong 956 56 11ms 10 Dec 2023 66th two-bad 🇬🇧 956 56 13ms 23 Feb 2024 66th mehbark 956 56 11ms 27 Jul 2024 66th madeforlosers 956 56 11ms 4 Nov 2024 66th XenThe 🇬🇧 956 56 10ms 6 Jun 2025 66th Tristanchaang 956 56 11ms 13 Nov 2025 88th Lydxn 🇨🇦 954 89 57ms 6 May 2022 88th JayXon 🇺🇸 954 89 55ms 7 May 2022 88th nwellnhof 🇩🇪 954 89 59ms 5 Jun 2022 88th snyderek 🇺🇸 954 89 55ms 19 Feb 2025 92nd 2bular 952 32 27ms 17 Oct 2024 93rd ovs-code 🇩🇪 950 61 248ms 5 Aug 2024 94th Lydxn 🇨🇦 950 82 446ms 6 May 2022 94th JayXon 🇺🇸 950 82 383ms 9 May 2022 96th Lydxn 🇨🇦 949 55 808ms 16 Jan 2024 96th ovs-code 🇩🇪 949 55 835ms 16 Jan 2024 96th Steffan153 🇫🇮 949 55 397ms 16 Jan 2024 96th kg583 🇺🇸 949 55 403ms 16 Feb 2024 96th Shanethegamer 🇺🇸 949 55 407ms 24 Mar 2024 96th pardouin 🇫🇷 949 55 400ms 30 Jun 2024 96th JayXon 🇺🇸 949 55 391ms 17 Aug 2024 96th sean-niemann 🇺🇸 949 55 382ms 24 Jan 2025 104th Lydxn 🇨🇦 949 59 11ms 6 May 2022 105th JayXon 🇺🇸 948 88 497ms 24 Sep 2025 105th Lydxn 🇨🇦 948 88 409ms 12 Dec 2025 107th primo-ppcg 🇹🇭 947 49 6ms 5 May 2022 107th Lydxn 🇨🇦 947 49 6ms 8 May 2022 109th lyphyser 946 46 49ms 13 Jan 2024 109th AdrienHache 🇫🇷 946 46 51ms 9 Apr 2024 111th saito-ta 🇯🇵 945 49 65ms 13 May 2022 111th Lydxn 🇨🇦 945 49 66ms 28 May 2022 113th JayXon 🇺🇸 945 88 126ms 17 Oct 2022 113th acotis 945 88 118ms 9 Jun 2025 113th kumavale 945 88 132ms 7 Oct 2025 116th canissimia 🇦🇶 941 50 40ms 5 May 2022 116th ovs-code 🇩🇪 941 50 244ms 7 May 2022 116th sisyphus-ppcg 🇦🇺 941 50 43ms 20 Feb 2023 116th Steffan153 🇫🇮 941 50 45ms 20 Jul 2024 116th sean-niemann 🇺🇸 941 50 43ms 9 Jun 2025 116th pardouin 🇫🇷 941 50 41ms 22 Aug 2025 122nd canissimia 🇦🇶 940 51 1,302ms 6 May 2022 122nd Lydxn 🇨🇦 940 51 1,280ms 6 May 2022 122nd primo-ppcg 🇹🇭 940 51 1,309ms 6 May 2022 122nd pardouin 🇫🇷 940 51 1,391ms 12 Apr 2025 126th primo-ppcg 🇹🇭 940 58 5ms 13 Nov 2022 126th clockworknazo 940 58 6ms 15 Nov 2022 126th Lydxn 🇨🇦 940 58 6ms 7 Feb 2023 126th xsot 🇸🇬 940 58 6ms 28 Jun 2024 126th Salutations45 940 58 6ms 18 Dec 2024 126th canissimia 🇦🇶 940 58 6ms 12 Dec 2025 132nd inventshah 939 57 11ms 4 May 2022 132nd itsh01 939 57 12ms 17 May 2022 132nd Natanaelel 🇸🇪 939 57 12ms 16 Jun 2022 132nd Attero 🇸🇪 939 57 12ms 3 Aug 2022 132nd SirFireball3521 939 57 14ms 26 Jan 2023 132nd Kacarott 🇦🇺 939 57 11ms 24 Mar 2023 132nd nathanadams 🇳🇿 939 57 11ms 24 Apr 2023 132nd hacker112 🇸🇪 939 57 11ms 20 Jun 2024 132nd thisishowmymindworks 🇳🇴 939 57 12ms 28 Jun 2024 132nd Salutations45 939 57 11ms 18 Nov 2024 132nd daniel-cardone 939 57 11ms 3 Jul 2025 132nd CaedenHarper 🇨🇦 939 57 11ms 28 Sep 2025 132nd BrunoVisnadi 🇧🇷 939 57 10ms 21 Oct 2025 132nd Laellekoenig 939 57 12ms 22 Oct 2025 132nd Lv0Sys 🇵🇱 939 57 12ms 7 Dec 2025 147th Irratix 🇳🇱 939 83 446ms 4 May 2022 147th nwellnhof 🇩🇪 939 83 433ms 4 May 2022 147th ScottHamper 939 83 405ms 5 May 2022 147th Romain-1 🇫🇷 939 83 419ms 1 Jun 2022 147th Gaddy 🇫🇷 939 83 423ms 1 Jun 2022 147th 5quiwyrm 939 83 403ms 4 Sep 2022 147th Betuaredead 939 83 426ms 5 Jan 2023 147th Yewzir 🇧🇪 939 83 428ms 12 Feb 2023 147th btnlq 939 83 427ms 9 Mar 2023 147th Adix-null 🇱🇹 939 83 445ms 17 May 2023 147th AdrienHache 🇫🇷 939 83 360ms 8 Jun 2023 147th gblikas 939 83 386ms 23 Jul 2023 147th KrausRaus 🇺🇸 939 83 414ms 31 Jul 2023 147th namelessiw 939 83 435ms 9 Apr 2025 First Prev 81–160 of 3,554 Next Last