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 403rd ryyyn 🇺🇸 912 73 7 Jan 2025 403rd maxgodfrey2004 🇨🇦 912 73 13 Feb 2025 403rd lolgeny 912 73 22 Feb 2025 403rd andrewjc2000 912 73 23 Feb 2025 403rd Languag3 912 73 27 Feb 2025 403rd Bulmenisaurus 912 73 2 Mar 2025 403rd souta-1326 912 73 1 Apr 2025 403rd BenjaminHGong 912 73 9 days ago 459th lynn 912 78 5 May 2022 460th Steffan153 🇫🇮 912 81 11 Dec 2023 461st andersk 🇺🇸 912 91 25 Oct 2022 461st Super-Pizza 🇨🇦 912 91 4 Dec 2022 461st klixel 🇨🇦 912 91 20 May 2023 461st lynn 912 91 6 Jul 2024 461st edsrzf 🇳🇿 912 91 29 Nov 2024 461st acotis 912 91 23 Mar 2025 461st DialFrost 🇸🇬 912 91 7 Apr 2025 468th nai62 910 69 27 Aug 2022 469th Lydxn 🇨🇦 910 81 1 Apr 2023 470th tailorspy 910 93 27 May 2024 471st primo-ppcg 🇹🇭 909 93 7 May 2022 471st AlephSquirrel 909 93 21 Jan 2023 471st kg583 🇺🇸 909 93 26 Dec 2024 471st CLOStrophobic 🇮🇹 909 93 17 Jan 2025 475th cbrt-x 909 129 6 May 2022 475th piano-miles 909 129 8 Feb 2023 475th lukashert 909 129 7 Jun 2023 475th DialFrost 🇸🇬 909 129 29 Jan 2024 475th bac0id 909 129 29 Jun 2024 475th yoshykai 909 129 27 Mar 2025 481st Shanethegamer 🇺🇸 907 77 15 May 2023 482nd krcs 🇵🇱 907 86 10 May 2022 483rd KrausRaus 🇺🇸 906 59 4 May 2022 483rd voytxt 🇨🇿 906 59 4 May 2022 483rd KingSkyrock 🇺🇸 906 59 18 May 2022 483rd ZakkkkAttackkkk 🇵🇭 906 59 14 Jul 2022 483rd aksyristos 906 59 28 Oct 2022 483rd nstearns96 🇬🇧 906 59 28 Nov 2022 483rd janbehrens 🇩🇪 906 59 17 May 2023 483rd Shanethegamer 🇺🇸 906 59 25 May 2023 483rd Maznek 906 59 26 Jun 2023 483rd SpiritAxolotl 🇺🇸 906 59 20 Mar 2024 483rd Andrey-Plotnikov 906 59 19 May 2024 483rd emgordon154 906 59 5 Aug 2024 483rd duckyluuk 🇳🇱 906 59 3 Oct 2024 483rd lifthrasiir 🇰🇷 906 59 23 Nov 2024 483rd fuzzylojik-golf 🇺🇸 906 59 3 days ago 498th Betuaredead 906 60 5 Jan 2023 498th Yewzir 🇧🇪 906 60 12 Feb 2023 498th Steffan153 🇫🇮 906 60 23 Feb 2023 498th DialFrost 🇸🇬 906 60 30 Jul 2024 498th GolfingSuccess 🇬🇷 906 60 16 Oct 2024 498th sean-niemann 🇺🇸 906 60 7 Mar 2025 504th GolfingSuccess 🇬🇷 906 64 14 Dec 2024 504th MeWhenI 🇻🇦 906 64 24 Dec 2024 506th GrayJoKing 🇦🇺 906 71 10 Aug 2023 507th ovs-code 🇩🇪 906 84 25 Sep 2022 507th GrayJoKing 🇦🇺 906 84 11 Aug 2023 509th MeWhenI 🇻🇦 905 63 5 May 2022 510th MeWhenI 🇻🇦 905 110 9 Feb 2023 510th edsrzf 🇳🇿 905 110 28 Nov 2024 512th Lydxn 🇨🇦 904 64 1 Apr 2023 513th DialFrost 🇸🇬 904 77 27 Feb 2025 514th Steffan153 🇫🇮 904 80 15 Nov 2022 514th error256 904 80 8 Apr 2025 516th marshallward 🇺🇸 904 83 10 May 2022 517th nipzu 903 48 8 Sep 2024 518th shinh 903 52 29 Jun 2022 518th pardouin 🇫🇷 903 52 12 Apr 2025 520th m-tkach 🇺🇦 903 90 7 Dec 2023 521st MeWhenI 🇻🇦 902 71 20 Aug 2024 522nd Shanethegamer 🇺🇸 902 72 4 May 2022 522nd jared-hughes 902 72 4 May 2022 522nd Waffle3z 902 72 5 May 2022 522nd m-tkach 🇺🇦 902 72 16 Oct 2022 Prev 451–525 of 3,078 Next