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 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 Maze Medal Tally 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 Transpose Sentence United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Hilbert Curve Mandelbrot Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle 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 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 Groovy Harbour Hare Haxe Hush Hy iogii Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 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 Groovy Harbour Hare Haxe Hush Hy iogii Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua 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 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 Maze Medal Tally 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 Transpose Sentence United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Hilbert Curve Mandelbrot Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Bytes Time 287th Betuaredead 930 126 5 Jan 2023 287th annaproxy 930 126 7 Jan 2023 287th Yewzir 🇧🇪 930 126 12 Feb 2023 287th Jacob385 930 126 4 Mar 2024 287th dokutan 930 126 17 Mar 2024 287th eMGeeneer 930 126 15 Jun 2024 287th mrondon8 930 126 2 Dec 2024 308th Natanaelel 🇸🇪 929 28 22 Jul 2022 308th SirBogman 🇺🇸 929 28 17 Sep 2022 310th ovs-code 🇩🇪 928 60 9 Oct 2023 310th GrayJoKing 🇦🇺 928 60 11 Oct 2023 310th Lydxn 🇨🇦 928 60 11 Oct 2023 310th GolfingSuccess 🇬🇷 928 60 16 Nov 2023 310th Steffan153 🇫🇮 928 60 28 Jan 2024 310th JayXon 🇺🇸 928 60 29 Jan 2024 310th rucin93 🇵🇱 928 60 10 Jul 2024 310th sean-niemann 🇺🇸 928 60 10 Jul 2024 318th MeWhenI 🇻🇦 928 68 23 Feb 2023 318th JayXon 🇺🇸 928 68 4 Mar 2025 320th Lydxn 🇨🇦 928 70 17 Oct 2022 320th JayXon 🇺🇸 928 70 17 Oct 2022 320th GrayJoKing 🇦🇺 928 70 13 Jul 2024 320th FlyingPenguin223 928 70 4 Oct 2024 320th jipsong 🇩🇪 928 70 5 Apr 2025 325th sisyphus-ppcg 🇦🇺 927 50 31 Jan 2023 325th saito-ta 🇯🇵 927 50 12 Dec 2024 327th JayXon 🇺🇸 927 57 19 Aug 2024 328th Steffan153 🇫🇮 927 67 19 Aug 2024 328th JayXon 🇺🇸 927 67 19 Aug 2024 330th roavin 926 84 23 Jun 2022 330th tkr-sh 🇫🇷 926 84 20 Aug 2022 330th Nickmiste 926 84 9 Nov 2022 330th Matgc04 926 84 19 May 2023 330th postie77 926 84 19 May 2023 330th ertz1ertz 926 84 13 Sep 2024 330th Grabnukebomb 926 84 13 Sep 2024 330th Shanethegamer 🇺🇸 926 84 9 Apr 2025 330th HumanoidCPU 926 84 10 Apr 2025 330th annaproxy 926 84 11 Apr 2025 330th Re-Adventures 🇮🇳 926 84 15 Apr 2025 330th janbehrens 🇩🇪 926 84 17 Apr 2025 330th fuzzylojik-golf 🇺🇸 926 84 23 days ago 343rd scpchicken 🇵🇼 925 72 4 May 2022 343rd sultan 925 72 6 Jun 2022 343rd annaproxy 925 72 22 Aug 2022 343rd BlankSpruce 925 72 9 Sep 2022 343rd ValentinCassayre 925 72 8 Oct 2022 343rd commandblockguy 🇺🇸 925 72 3 Nov 2022 343rd mathb0y512 925 72 1 Dec 2022 343rd NoahBolohan 🇨🇦 925 72 28 Feb 2023 343rd neel11235813 925 72 8 Mar 2023 343rd Kacarott 🇦🇺 925 72 24 Mar 2023 343rd Fracture17 925 72 8 Apr 2023 343rd ayushdewan 925 72 7 May 2023 343rd PeterTillema 🇳🇱 925 72 17 Oct 2023 343rd Glinte 925 72 11 Dec 2023 343rd nanatsu8 925 72 11 May 2024 343rd thej10n 925 72 12 Jun 2024 343rd duckyluuk 🇳🇱 925 72 13 Jun 2024 343rd tobeannouncd 925 72 25 Apr 2025 361st Bubbler-4 923 33 6 May 2022 361st rak1507 🇬🇧 923 33 8 May 2022 361st ngn 🇧🇬 923 33 11 May 2022 361st zacjl 923 33 17 days ago 361st GrayJoKing 🇦🇺 923 33 15 days ago 366th ovs-code 🇩🇪 923 67 13 Dec 2022 366th Steffan153 🇫🇮 923 67 18 Dec 2022 366th Lydxn 🇨🇦 923 67 4 Feb 2023 366th sean-niemann 🇺🇸 923 67 7 Mar 2025 370th Luca2812 923 127 12 Dec 2022 370th plastic-bottle 923 127 13 Sep 2023 370th h3ra993huskp 🇯🇵 923 127 17 Sep 2023 370th tigerdan2 🇩🇪 923 127 19 Dec 2023 374th uiamn 922 58 6 Sep 2022 374th 5quiwyrm 922 58 29 Sep 2022 Prev 301–375 of 3,132 Next