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 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 Hilbert Curve 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 Knight 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 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 Knight 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 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 Hilbert Curve 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 526th GrayJoKing 🇦🇺 908 71 10 Aug 2023 527th Betuaredead 907 60 5 Jan 2023 527th Yewzir 🇧🇪 907 60 12 Feb 2023 527th Steffan153 🇫🇮 907 60 23 Feb 2023 527th DialFrost 🇸🇬 907 60 30 Jul 2024 527th GolfingSuccess 🇬🇷 907 60 16 Oct 2024 527th sean-niemann 🇺🇸 907 60 7 Mar 2025 533rd edsrzf 🇳🇿 907 72 3 Jul 2025 534th Shanethegamer 🇺🇸 907 77 15 May 2023 535th marshallward 🇺🇸 907 83 10 May 2022 536th KrausRaus 🇺🇸 906 59 4 May 2022 536th voytxt 🇨🇿 906 59 4 May 2022 536th KingSkyrock 🇺🇸 906 59 18 May 2022 536th ZakkkkAttackkkk 🇵🇭 906 59 14 Jul 2022 536th aksyristos 906 59 28 Oct 2022 536th nstearns96 🇬🇧 906 59 28 Nov 2022 536th janbehrens 🇩🇪 906 59 17 May 2023 536th Shanethegamer 🇺🇸 906 59 25 May 2023 536th Maznek 906 59 26 Jun 2023 536th SpiritAxolotl 🇺🇸 906 59 20 Mar 2024 536th Andrey-Plotnikov 906 59 19 May 2024 536th emgordon154 906 59 5 Aug 2024 536th duckyluuk 🇳🇱 906 59 3 Oct 2024 536th lifthrasiir 🇰🇷 906 59 23 Nov 2024 536th fuzzylojik-golf 🇺🇸 906 59 1 Jun 2025 536th acollett89 906 59 17 Jun 2025 552nd ovs-code 🇩🇪 906 84 25 Sep 2022 552nd GrayJoKing 🇦🇺 906 84 11 Aug 2023 554th MeWhenI 🇻🇦 906 110 9 Feb 2023 554th edsrzf 🇳🇿 906 110 28 Nov 2024 554th targrik 906 110 30 Jun 2025 557th MeWhenI 🇻🇦 905 63 5 May 2022 558th krcs 🇵🇱 905 86 10 May 2022 558th billings7 🇬🇧 905 86 15 May 2022 558th revlayle 🇺🇸 905 86 7 Dec 2022 558th Widgitty 905 86 1 Sep 2023 562nd m-tkach 🇺🇦 905 90 7 Dec 2023 563rd nipzu 904 48 8 Sep 2024 564th shinh 904 52 29 Jun 2022 564th pardouin 🇫🇷 904 52 12 Apr 2025 566th Lydxn 🇨🇦 904 64 1 Apr 2023 567th DialFrost 🇸🇬 904 76 7 days ago 568th Steffan153 🇫🇮 904 80 15 Nov 2022 568th error256 904 80 8 Apr 2025 570th Lydxn 🇨🇦 903 70 7 May 2022 571st MeWhenI 🇻🇦 903 71 20 Aug 2024 572nd Shanethegamer 🇺🇸 903 72 4 May 2022 572nd jared-hughes 903 72 4 May 2022 572nd Waffle3z 903 72 5 May 2022 572nd m-tkach 🇺🇦 903 72 16 Oct 2022 572nd GrayJoKing 🇦🇺 903 72 22 Oct 2022 572nd emplv 🇱🇻 903 72 27 Oct 2022 572nd sean-niemann 🇺🇸 903 72 7 Mar 2025 572nd Blendi-Goose 903 72 16 Mar 2025 572nd edsrzf 🇳🇿 903 72 12 Apr 2025 581st Shanethegamer 🇺🇸 903 82 19 Dec 2023 581st edsrzf 🇳🇿 903 82 6 Jan 2025 583rd stefangimmillaro 902 92 24 Oct 2023 583rd inverseLorentz 🇦🇺 902 92 27 May 2024 583rd sean-niemann 🇺🇸 902 92 8 Jun 2025 586th bwat2 902 130 5 May 2022 586th FlorianCassayre 🇫🇷 902 130 20 Sep 2022 586th Widgitty 902 130 29 May 2023 589th Steffan153 🇫🇮 901 82 1 Apr 2023 589th sean-niemann 🇺🇸 901 82 12 Jul 2024 591st michael-pruglo 🇺🇦 901 94 5 Jul 2022 591st zygoloid 901 94 5 Aug 2024 593rd Lydxn 🇨🇦 900 69 12 Sep 2022 593rd GrayJoKing 🇦🇺 900 69 12 Sep 2022 593rd btnlq 900 69 24 Sep 2022 596th TobyBoyne 🇬🇧 900 74 4 May 2022 596th RDShah 900 74 6 May 2022 596th Indivicivet 900 74 9 May 2022 596th CedricGebistorf 900 74 9 May 2022 596th ophact 900 74 11 May 2022 Prev 526–600 of 3,235 Next