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 433rd shellbertt 🇨🇦 912 73 13 Jan 2023 433rd hunt-g 912 73 4 Feb 2023 433rd ljweel 912 73 13 Feb 2023 433rd jmerle 🇳🇱 912 73 16 Feb 2023 433rd TaserTheFox 🇺🇸 912 73 14 Mar 2023 433rd pinguicula 912 73 6 Apr 2023 433rd TheoKeller1 912 73 11 Jun 2023 433rd fkantelberg 912 73 16 Jul 2023 433rd Mikey-Beep 🇬🇧 912 73 31 Aug 2023 433rd eiburns 912 73 9 Oct 2023 433rd htareque 912 73 13 Oct 2023 433rd wearsunscreen 912 73 18 Oct 2023 433rd bzijlema 🇳🇱 912 73 25 Oct 2023 433rd Grrisly 912 73 10 Nov 2023 433rd m42km 912 73 11 Nov 2023 433rd GeneralPoxter 912 73 7 Dec 2023 433rd logvp 912 73 12 Jan 2024 433rd JoaoFelipe3 912 73 13 Jan 2024 433rd ehulinsky 🇺🇸 912 73 16 Feb 2024 433rd Lewenhaupt 912 73 23 Feb 2024 433rd Yewzir 🇧🇪 912 73 5 Apr 2024 433rd HETHAT 🇩🇿 912 73 12 Apr 2024 433rd stertooy 🇧🇪 912 73 9 Jun 2024 433rd cuboids 912 73 11 Jul 2024 433rd jipsong 🇩🇪 912 73 23 Jul 2024 433rd mattyhempstead 912 73 6 Oct 2024 433rd wh3n3v3r 🇨🇿 912 73 18 Nov 2024 433rd klixel 🇨🇦 912 73 18 Nov 2024 433rd tjwrenn 912 73 10 Dec 2024 433rd nullie 912 73 19 Dec 2024 433rd ryyyn 🇺🇸 912 73 7 Jan 2025 433rd maxgodfrey2004 🇨🇦 912 73 13 Feb 2025 433rd lolgeny 912 73 22 Feb 2025 433rd andrewjc2000 912 73 23 Feb 2025 433rd Languag3 912 73 27 Feb 2025 433rd Bulmenisaurus 912 73 2 Mar 2025 433rd souta-1326 912 73 1 Apr 2025 433rd BenjaminHGong 912 73 24 days ago 489th lynn 912 78 5 May 2022 490th Steffan153 🇫🇮 912 81 11 Dec 2023 491st andersk 🇺🇸 912 91 25 Oct 2022 491st Super-Pizza 🇨🇦 912 91 4 Dec 2022 491st klixel 🇨🇦 912 91 20 May 2023 491st lynn 912 91 6 Jul 2024 491st edsrzf 🇳🇿 912 91 29 Nov 2024 491st DialFrost 🇸🇬 912 91 7 Apr 2025 497th tailorspy 911 93 27 May 2024 497th sean-niemann 🇺🇸 911 93 11 days ago 499th nai62 910 69 27 Aug 2022 500th Lydxn 🇨🇦 910 81 1 Apr 2023 501st primo-ppcg 🇹🇭 909 93 7 May 2022 501st AlephSquirrel 909 93 21 Jan 2023 501st kg583 🇺🇸 909 93 26 Dec 2024 501st CLOStrophobic 🇮🇹 909 93 17 Jan 2025 505th cbrt-x 909 129 6 May 2022 505th piano-miles 909 129 8 Feb 2023 505th lukashert 909 129 7 Jun 2023 505th DialFrost 🇸🇬 909 129 29 Jan 2024 505th bac0id 909 129 29 Jun 2024 505th yoshykai 909 129 27 Mar 2025 511th Shanethegamer 🇺🇸 907 77 15 May 2023 512th KrausRaus 🇺🇸 906 59 4 May 2022 512th voytxt 🇨🇿 906 59 4 May 2022 512th KingSkyrock 🇺🇸 906 59 18 May 2022 512th ZakkkkAttackkkk 🇵🇭 906 59 14 Jul 2022 512th aksyristos 906 59 28 Oct 2022 512th nstearns96 🇬🇧 906 59 28 Nov 2022 512th janbehrens 🇩🇪 906 59 17 May 2023 512th Shanethegamer 🇺🇸 906 59 25 May 2023 512th Maznek 906 59 26 Jun 2023 512th SpiritAxolotl 🇺🇸 906 59 20 Mar 2024 512th Andrey-Plotnikov 906 59 19 May 2024 512th emgordon154 906 59 5 Aug 2024 512th duckyluuk 🇳🇱 906 59 3 Oct 2024 512th lifthrasiir 🇰🇷 906 59 23 Nov 2024 Prev 451–525 of 3,149 Next