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 152nd Adix-null 🇱🇹 939 83 397ms 17 May 2023 152nd AdrienHache 🇫🇷 939 83 420ms 8 Jun 2023 152nd gblikas 939 83 412ms 23 Jul 2023 152nd KrausRaus 🇺🇸 939 83 392ms 31 Jul 2023 152nd namelessiw 939 83 396ms 9 Apr 2025 152nd dokutan 939 83 391ms 9 Apr 2025 152nd m-tkach 🇺🇦 939 83 411ms 10 Apr 2025 152nd DialFrost 🇸🇬 939 83 401ms 10 Apr 2025 152nd kylejcwu 939 83 374ms 19 Apr 2025 152nd Tyrant7 939 83 409ms 19 Apr 2025 152nd Yax42 🇫🇷 939 83 442ms 19 Apr 2025 152nd MeWhenI 🇻🇦 939 83 378ms 19 Jun 2025 152nd sean-niemann 🇺🇸 939 83 390ms 20 Jun 2025 152nd stefangimmillaro 939 83 391ms 20 Jun 2025 152nd tomh1012 939 83 418ms 28 Aug 2025 152nd fuzzylojik-golf 🇺🇸 939 83 389ms 8 Sep 2025 152nd CaedenHarper 🇨🇦 939 83 377ms 17 Oct 2025 152nd arcpolaris 939 83 421ms 13 Jan 2026 152nd amazingalek 🇳🇴 939 83 403ms 21 Jan 2026 180th grey0ut 938 48 2,086ms 8 Apr 2025 181st GolfingSuccess 🇬🇷 938 49 38ms 12 Aug 2024 181st Shanethegamer 🇺🇸 938 49 39ms 12 Aug 2024 181st Steffan153 🇫🇮 938 49 39ms 12 Aug 2024 181st MeWhenI 🇻🇦 938 49 37ms 13 Aug 2024 181st DialFrost 🇸🇬 938 49 38ms 13 Aug 2024 181st GrayJoKing 🇦🇺 938 49 41ms 15 Aug 2024 181st btnlq 938 49 39ms 16 Aug 2024 181st emgordon154 938 49 41ms 19 Aug 2024 181st ovs-code 🇩🇪 938 49 39ms 19 Aug 2024 181st mousetail 🇳🇱 938 49 39ms 13 Sep 2024 181st lynn 938 49 39ms 20 Dec 2024 181st weeble 938 49 40ms 20 Dec 2024 181st sean-niemann 🇺🇸 938 49 39ms 11 Jan 2025 194th JayXon 🇺🇸 937 66 1,308ms 18 Nov 2025 195th DialFrost 🇸🇬 937 89 513ms 24 Sep 2025 195th ovs-code 🇩🇪 937 89 474ms 24 Sep 2025 195th dokutan 937 89 372ms 24 Sep 2025 195th sean-niemann 🇺🇸 937 89 397ms 24 Sep 2025 195th Shanethegamer 🇺🇸 937 89 477ms 25 Sep 2025 195th nwellnhof 🇩🇪 937 89 454ms 25 Sep 2025 195th m-tkach 🇺🇦 937 89 386ms 25 Sep 2025 195th namelessiw 937 89 390ms 2 Oct 2025 195th Yewzir 🇧🇪 937 89 349ms 2 Oct 2025 195th Yax42 🇫🇷 937 89 496ms 4 Oct 2025 195th stefangimmillaro 937 89 489ms 6 Oct 2025 195th CaedenHarper 🇨🇦 937 89 467ms 9 Oct 2025 195th Jacob385 937 89 491ms 27 Oct 2025 195th MeWhenI 🇻🇦 937 89 449ms 7 Nov 2025 195th ethanlally 937 89 380ms 10 Nov 2025 195th snoozingnewt 🇨🇦 937 89 384ms 23 Nov 2025 195th ScottHamper 937 89 467ms 30 Nov 2025 195th KasperKivimaeki 🇫🇮 937 89 444ms 30 Nov 2025 195th jusaka 937 89 415ms 3 days ago 214th JayXon 🇺🇸 935 73 4ms 23 Dec 2025 215th jusaka 935 89 132ms 7 hours ago 216th nwellnhof 🇩🇪 933 42 458ms 4 May 2022 216th Lydxn 🇨🇦 933 42 1,649ms 4 May 2022 216th GrayJoKing 🇦🇺 933 42 424ms 4 May 2022 216th Steffan153 🇫🇮 933 42 398ms 16 Dec 2022 216th sisyphus-ppcg 🇦🇺 933 42 422ms 31 Jan 2023 216th ovs-code 🇩🇪 933 42 449ms 30 Dec 2023 216th sean-niemann 🇺🇸 933 42 444ms 8 Mar 2025 223rd emplv 🇱🇻 933 60 10ms 5 May 2022 223rd GrayJoKing 🇦🇺 933 60 9ms 6 May 2022 223rd targrik 933 60 9ms 24 Dec 2024 223rd xsot 🇸🇬 933 60 10ms 1 May 2025 227th m-tkach 🇺🇦 933 91 61ms 5 May 2022 227th 09cf 933 91 56ms 4 Oct 2023 229th GrayJoKing 🇦🇺 932 56 437ms 15 Jan 2024 229th AlephSquirrel 932 56 396ms 21 Jan 2024 229th CaedenHarper 🇨🇦 932 56 484ms 26 Jan 2026 232nd Steffan153 🇫🇮 931 51 2,377ms 17 days ago 233rd ovs-code 🇩🇪 931 60 5ms 9 Oct 2023 233rd GrayJoKing 🇦🇺 931 60 4ms 11 Oct 2023 233rd Lydxn 🇨🇦 931 60 5ms 11 Oct 2023 233rd GolfingSuccess 🇬🇷 931 60 5ms 16 Nov 2023 233rd Steffan153 🇫🇮 931 60 5ms 28 Jan 2024 233rd JayXon 🇺🇸 931 60 4ms 29 Jan 2024 233rd rucin93 🇵🇱 931 60 5ms 10 Jul 2024 233rd sean-niemann 🇺🇸 931 60 5ms 10 Jul 2024 First Prev 161–240 of 3,665 Next Last