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 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 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 Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth 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 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 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 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 Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Bytes Time 300th GrayJoKing 🇦🇺 932 60 6 May 2022 300th targrik 932 60 24 Dec 2024 300th xsot 🇸🇬 932 60 1 May 2025 304th MeWhenI 🇻🇦 931 68 23 Feb 2023 304th JayXon 🇺🇸 931 68 4 Mar 2025 306th m-tkach 🇺🇦 931 91 5 May 2022 306th 09cf 931 91 4 Oct 2023 308th GrayJoKing 🇦🇺 930 56 15 Jan 2024 308th AlephSquirrel 930 56 21 Jan 2024 310th ovs-code 🇩🇪 930 60 9 Oct 2023 310th GrayJoKing 🇦🇺 930 60 11 Oct 2023 310th Lydxn 🇨🇦 930 60 11 Oct 2023 310th GolfingSuccess 🇬🇷 930 60 16 Nov 2023 310th Steffan153 🇫🇮 930 60 28 Jan 2024 310th JayXon 🇺🇸 930 60 29 Jan 2024 310th rucin93 🇵🇱 930 60 10 Jul 2024 310th sean-niemann 🇺🇸 930 60 10 Jul 2024 318th GrayJoKing 🇦🇺 930 70 13 Jul 2024 318th FlyingPenguin223 930 70 4 Oct 2024 318th jipsong 🇩🇪 930 70 5 Apr 2025 321st Natanaelel 🇸🇪 929 28 22 Jul 2022 321st SirBogman 🇺🇸 929 28 17 Sep 2022 323rd Lydxn 🇨🇦 929 70 17 Oct 2022 323rd JayXon 🇺🇸 929 70 17 Oct 2022 325th sisyphus-ppcg 🇦🇺 928 50 31 Jan 2023 325th saito-ta 🇯🇵 928 50 12 Dec 2024 327th Steffan153 🇫🇮 928 67 19 Aug 2024 327th JayXon 🇺🇸 928 67 19 Aug 2024 329th JayXon 🇺🇸 927 57 19 Aug 2024 330th roavin 927 84 23 Jun 2022 330th tkr-sh 🇫🇷 927 84 20 Aug 2022 330th Nickmiste 927 84 9 Nov 2022 330th Matgc04 927 84 19 May 2023 330th postie77 927 84 19 May 2023 330th ertz1ertz 927 84 13 Sep 2024 330th Grabnukebomb 927 84 13 Sep 2024 330th Shanethegamer 🇺🇸 927 84 9 Apr 2025 330th HumanoidCPU 927 84 10 Apr 2025 330th annaproxy 927 84 11 Apr 2025 330th Re-Adventures 🇮🇳 927 84 15 Apr 2025 330th janbehrens 🇩🇪 927 84 17 Apr 2025 342nd scpchicken 🇵🇼 926 72 4 May 2022 342nd sultan 926 72 6 Jun 2022 342nd annaproxy 926 72 22 Aug 2022 342nd BlankSpruce 926 72 9 Sep 2022 342nd ValentinCassayre 926 72 8 Oct 2022 342nd commandblockguy 🇺🇸 926 72 3 Nov 2022 342nd mathb0y512 926 72 1 Dec 2022 342nd NoahBolohan 🇨🇦 926 72 28 Feb 2023 342nd neel11235813 926 72 8 Mar 2023 342nd Kacarott 🇦🇺 926 72 24 Mar 2023 342nd Fracture17 926 72 8 Apr 2023 342nd ayushdewan 926 72 7 May 2023 342nd PeterTillema 🇳🇱 926 72 17 Oct 2023 342nd Glinte 926 72 11 Dec 2023 342nd nanatsu8 926 72 11 May 2024 342nd thej10n 926 72 12 Jun 2024 342nd duckyluuk 🇳🇱 926 72 13 Jun 2024 342nd tobeannouncd 926 72 25 Apr 2025 342nd YAJUE114514 926 72 15 Aug 2025 361st ovs-code 🇩🇪 925 67 13 Dec 2022 361st Steffan153 🇫🇮 925 67 18 Dec 2022 361st Lydxn 🇨🇦 925 67 4 Feb 2023 361st sean-niemann 🇺🇸 925 67 7 Mar 2025 365th Lydxn 🇨🇦 924 108 6 May 2022 365th JayXon 🇺🇸 924 108 9 May 2022 367th Bubbler-4 923 33 6 May 2022 367th rak1507 🇬🇧 923 33 8 May 2022 367th ngn 🇧🇬 923 33 11 May 2022 367th zacjl 923 33 3 Jun 2025 367th GrayJoKing 🇦🇺 923 33 4 Jun 2025 372nd btnlq 923 59 6 Nov 2022 373rd Lydxn 🇨🇦 923 90 6 May 2022 373rd kumavale 923 90 22 days ago 375th nwellnhof 🇩🇪 922 51 4 May 2022 Prev 301–375 of 3,341 Next