Collatz in all languages in bytes. Cheevos Holes Recent Holes Langs Medals Misc 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 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 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 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 Calendar Connect Four 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 Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir 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 Arturo Befunge BQN CJam CoffeeScript Egel Erlang 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 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 Arturo Befunge BQN CJam CoffeeScript Egel Erlang 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 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 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 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 Calendar Connect Four 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 Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Bytes Time Submitted 214th Jacob385 937 89 352ms 16 days ago 214th MeWhenI 🇻🇦 937 89 336ms 5 days ago 214th ethanlally 937 89 348ms 2 days ago 229th nwellnhof 🇩🇪 933 42 343ms 4 May 2022 229th Lydxn 🇨🇦 933 42 1,762ms 4 May 2022 229th GrayJoKing 🇦🇺 933 42 418ms 4 May 2022 229th Steffan153 🇫🇮 933 42 357ms 16 Dec 2022 229th sisyphus-ppcg 🇦🇺 933 42 362ms 31 Jan 2023 229th ovs-code 🇩🇪 933 42 513ms 30 Dec 2023 229th sean-niemann 🇺🇸 933 42 339ms 8 Mar 2025 236th emplv 🇱🇻 933 60 9ms 5 May 2022 236th GrayJoKing 🇦🇺 933 60 9ms 6 May 2022 236th targrik 933 60 10ms 24 Dec 2024 236th xsot 🇸🇬 933 60 9ms 1 May 2025 240th m-tkach 🇺🇦 932 91 56ms 5 May 2022 240th 09cf 932 91 53ms 4 Oct 2023 242nd GrayJoKing 🇦🇺 931 56 416ms 15 Jan 2024 242nd AlephSquirrel 931 56 704ms 21 Jan 2024 244th MeWhenI 🇻🇦 931 68 88ms 23 Feb 2023 244th JayXon 🇺🇸 931 68 91ms 4 Mar 2025 246th ovs-code 🇩🇪 930 60 5ms 9 Oct 2023 246th GrayJoKing 🇦🇺 930 60 5ms 11 Oct 2023 246th Lydxn 🇨🇦 930 60 5ms 11 Oct 2023 246th GolfingSuccess 🇬🇷 930 60 4ms 16 Nov 2023 246th Steffan153 🇫🇮 930 60 5ms 28 Jan 2024 246th JayXon 🇺🇸 930 60 5ms 29 Jan 2024 246th rucin93 🇵🇱 930 60 5ms 10 Jul 2024 246th sean-niemann 🇺🇸 930 60 5ms 10 Jul 2024 254th Lydxn 🇨🇦 930 70 105ms 17 Oct 2022 254th JayXon 🇺🇸 930 70 107ms 17 Oct 2022 254th GrayJoKing 🇦🇺 930 70 3ms 13 Jul 2024 254th FlyingPenguin223 930 70 4ms 4 Oct 2024 254th jipsong 🇩🇪 930 70 6ms 5 Apr 2025 259th Natanaelel 🇸🇪 929 28 193ms 22 Jul 2022 259th SirBogman 🇺🇸 929 28 175ms 17 Sep 2022 261st Steffan153 🇫🇮 929 67 37ms 19 Aug 2024 261st JayXon 🇺🇸 929 67 53ms 19 Aug 2024 263rd sisyphus-ppcg 🇦🇺 928 50 2,856ms 31 Jan 2023 263rd saito-ta 🇯🇵 928 50 890ms 12 Dec 2024 265th JayXon 🇺🇸 928 57 136ms 19 Aug 2024 266th roavin 927 84 338ms 23 Jun 2022 266th tkr-sh 🇰🇵 927 84 330ms 20 Aug 2022 266th Nickmiste 927 84 360ms 9 Nov 2022 266th Matgc04 927 84 396ms 19 May 2023 266th postie77 927 84 358ms 19 May 2023 266th ertz1ertz 927 84 364ms 13 Sep 2024 266th Grabnukebomb 927 84 374ms 13 Sep 2024 266th Shanethegamer 🇺🇸 927 84 342ms 9 Apr 2025 266th HumanoidCPU 927 84 370ms 10 Apr 2025 266th annaproxy 927 84 340ms 11 Apr 2025 266th Re-Adventures 🇮🇳 927 84 335ms 15 Apr 2025 266th janbehrens 🇩🇪 927 84 352ms 17 Apr 2025 266th Flix7dev 🇧🇪 927 84 410ms 22 days ago 279th JayXon 🇺🇸 926 105 248ms 4 Oct 2025 279th KasperKivimaeki 🇫🇮 926 105 243ms 4 Oct 2025 281st ovs-code 🇩🇪 925 67 92ms 13 Dec 2022 281st Steffan153 🇫🇮 925 67 99ms 18 Dec 2022 281st Lydxn 🇨🇦 925 67 105ms 4 Feb 2023 281st sean-niemann 🇺🇸 925 67 107ms 7 Mar 2025 285th MichalMarsalek 🇨🇿 925 70 19ms 5 May 2022 285th primo-ppcg 🇹🇭 925 70 26ms 5 May 2022 285th SirBogman 🇺🇸 925 70 21ms 5 May 2022 285th prplz 🇦🇺 925 70 17ms 5 May 2022 285th Irratix 🇳🇱 925 70 20ms 7 May 2022 285th rak1507 🇬🇧 925 70 22ms 7 May 2022 285th inventshah 925 70 19ms 9 May 2022 285th k3w1k0d3r 925 70 19ms 22 Jun 2022 285th ZakkkkAttackkkk 🇵🇭 925 70 17ms 14 Jul 2022 285th Bonjour27891 🇻🇳 925 70 20ms 14 Jul 2022 285th OllieBoyne 🇬🇧 925 70 19ms 19 Jul 2022 285th bricknellj 925 70 22ms 25 Jul 2022 285th wen1now 925 70 20ms 8 Aug 2022 285th 051 🇸🇬 925 70 20ms 8 Aug 2022 285th Sp3000 🇦🇺 925 70 20ms 8 Aug 2022 285th betaveros 925 70 21ms 9 Aug 2022 First Prev 226–300 of 3,453 Next Last