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 747th stefangabos 🇷🇴 891 60 19 Aug 2022 747th eranws 891 60 10 Sep 2022 747th GeorgeStechman 🇬🇧 891 60 26 Sep 2022 747th BloodStormKnight 891 60 15 Oct 2022 747th dzshn 891 60 3 Dec 2022 747th biocommando 🇫🇮 891 60 20 Dec 2022 747th Betuaredead 891 60 5 Jan 2023 747th piano-miles 891 60 16 Jan 2023 747th Yewzir 🇧🇪 891 60 12 Feb 2023 747th shellbertt 🇨🇦 891 60 26 Feb 2023 747th zakariamouhid 891 60 20 May 2023 747th raphaelimahorn 891 60 23 Aug 2023 747th jbt 891 60 25 Dec 2023 747th olleicua 🇺🇸 891 60 15 Feb 2024 747th HumanoidCPU 891 60 3 May 2024 747th dokutan 891 60 13 Aug 2024 747th LostSyntax21 🇬🇧 891 60 10 Sep 2024 747th xyangst 891 60 28 Sep 2024 747th a6166231 🇨🇳 891 60 15 May 2025 747th Protothor 891 60 8 Jul 2025 747th SebassNoob 891 60 5 Aug 2025 747th Yax42 🇫🇷 891 60 20 days ago 773rd lynn 891 65 5 May 2022 773rd GrayJoKing 🇦🇺 891 65 5 May 2022 773rd Sakisan 🇧🇪 891 65 6 May 2022 773rd JayXon 🇺🇸 891 65 17 Oct 2022 773rd Steffan153 🇫🇮 891 65 12 Nov 2022 773rd tobeannouncd 891 65 25 Apr 2025 773rd sean-niemann 🇺🇸 891 65 9 Jun 2025 780th sean-niemann 🇺🇸 891 73 12 Jul 2024 781st canissimia 🇦🇶 891 110 20 Feb 2023 782nd stefangimmillaro 891 112 26 Sep 2023 782nd kkoenig 891 112 4 Jan 2024 784th m-tkach 🇺🇦 891 117 7 May 2022 784th Lydxn 🇨🇦 891 117 7 May 2022 786th primo-ppcg 🇹🇭 890 52 5 May 2022 786th dvargas46 🇺🇸 890 52 22 Dec 2022 788th JayXon 🇺🇸 890 74 14 Nov 2024 789th DialFrost 🇸🇬 890 95 10 Dec 2024 790th martinnorling 🇸🇪 889 75 5 May 2022 790th Trunksistor 🇫🇷 889 75 9 May 2022 790th bbakersmith 889 75 28 Jun 2022 790th bsoyka 🇺🇸 889 75 16 Jul 2022 790th P-Quentin 🇫🇷 889 75 3 Aug 2022 790th julienlamoureux78 889 75 12 Aug 2022 790th dzshn 889 75 16 Aug 2022 790th NerdyMcNerd42 889 75 20 Aug 2022 790th destofr 889 75 25 Aug 2022 790th vishwathg 889 75 10 Oct 2022 790th nkoppel 889 75 19 Oct 2022 790th AZ9tumas 889 75 23 Oct 2022 790th EthanGrant1 889 75 7 Nov 2022 790th Omega65536 🇩🇪 889 75 24 Nov 2022 790th b10011 🇫🇮 889 75 3 Jan 2023 790th 4ndyJ 🇬🇧 889 75 3 Jan 2023 790th randolchance 889 75 8 Jan 2023 790th LeeCamp 889 75 12 Jan 2023 790th hellwue 889 75 15 Feb 2023 790th nandanjp 889 75 29 Mar 2023 790th kaptsanovb 889 75 20 Apr 2023 790th galloj 🇨🇿 889 75 20 May 2023 790th jhu04 889 75 23 Jun 2023 790th HelloYuiYui 889 75 1 Nov 2023 790th tobyLovick 889 75 10 Nov 2023 790th VictorStenvers 🇳🇱 889 75 13 Nov 2023 790th RZ781 889 75 19 Nov 2023 790th mikehanus 889 75 21 Nov 2023 790th 1231234md5 🇨🇳 889 75 14 Dec 2023 790th Hebelub 889 75 6 Jan 2024 790th minhtrancccp 889 75 11 Jan 2024 790th 123mjb 889 75 25 Jan 2024 790th jbjd 889 75 25 Feb 2024 790th gabe-gallegos 889 75 2 May 2024 790th kejcao 🇨🇦 889 75 11 May 2024 790th f-tucker 889 75 24 May 2024 Prev 751–825 of 3,343 Next
