The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 5 days. Why not try and solve them ahead of time?
Divisors in all languages in bytes. Achievements Cheevos Holes Languages Medals Miscellaneous 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Minesweeper Morse Decoder Morse Encoder Multitap Input 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 Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Minesweeper Morse Decoder Morse Encoder Multitap Input 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 Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 474th Yax42 🇫🇷 955 71 424ms 6 Oct 2025 482nd JayXon 🇺🇸 953 79 493ms 24 Sep 2025 482nd sean-niemann 🇺🇸 953 79 372ms 24 Sep 2025 482nd Steffan153 🇫🇮 953 79 371ms 11 Feb 2026 485th JayXon 🇺🇸 952 21 33ms 23 Sep 2021 485th Natanaelel 🇸🇪 952 21 32ms 21 Oct 2023 487th saito-ta 🇯🇵 952 46 85ms 14 May 2022 487th dvargas46 🇺🇸 952 46 87ms 19 Jul 2022 489th primo-ppcg 🇹🇭 952 61 2ms 5 Oct 2020 489th prplz 🇦🇺 952 61 4ms 14 May 2022 489th benwilliamgraham 952 61 3ms 18 Jul 2023 489th sisyphus-ppcg 🇦🇺 952 61 2ms 6 Oct 2023 493rd achimkrause 952 66 120ms 11 Jul 2018 493rd mossprescott 952 66 122ms 13 Aug 2018 493rd yanqui-uxo 952 66 113ms 13 Sep 2018 493rd HPWiz 🇳🇿 952 66 116ms 3 Dec 2018 493rd Frowny 952 66 120ms 4 Dec 2018 493rd potato4444 952 66 117ms 4 Dec 2018 493rd flawr 952 66 115ms 5 Dec 2018 493rd bforte 952 66 123ms 8 Dec 2018 493rd primo-ppcg 🇹🇭 952 66 115ms 26 Dec 2018 493rd laikoni 952 66 117ms 26 Dec 2018 493rd Bubbler-4 952 66 120ms 17 Jan 2019 493rd treeowl 952 66 116ms 26 Feb 2019 493rd SirBogman 🇺🇸 952 66 119ms 25 Jan 2020 493rd prplz 🇦🇺 952 66 123ms 13 Nov 2020 493rd lynn 952 66 118ms 15 Mar 2021 493rd GrayJoKing 🇦🇺 952 66 117ms 16 Mar 2021 493rd xnor-gate 952 66 114ms 29 Apr 2021 493rd rak1507 🇬🇧 952 66 120ms 28 Jun 2021 493rd Lydxn 🇨🇦 952 66 122ms 23 Sep 2021 493rd JayXon 🇺🇸 952 66 109ms 27 Oct 2021 493rd annaproxy 952 66 118ms 24 Jan 2022 493rd ovs-code 🇩🇪 952 66 119ms 6 Mar 2022 493rd Sakisan 🇧🇪 952 66 116ms 12 Apr 2022 493rd strout 952 66 114ms 15 Aug 2022 493rd PPKFS 952 66 121ms 8 Dec 2022 493rd Steffan153 🇫🇮 952 66 121ms 14 Dec 2022 493rd Shanethegamer 🇺🇸 952 66 120ms 26 Feb 2023 493rd y-koj 952 66 115ms 28 May 2023 493rd TrueBoxGuy 952 66 121ms 6 Aug 2023 493rd stackofbears 952 66 117ms 8 Sep 2023 493rd btnlq 952 66 117ms 14 Oct 2023 493rd DialFrost 🇸🇬 952 66 121ms 5 Aug 2024 493rd pardouin 🇫🇷 952 66 116ms 5 Sep 2024 493rd sean-niemann 🇺🇸 952 66 118ms 20 Dec 2024 493rd Natanaelel 🇸🇪 952 66 117ms 12 May 2025 493rd fuzzylojik-golf 🇺🇸 952 66 119ms 26 Aug 2025 493rd iczelia 🇩🇪 952 66 124ms 16 Oct 2025 493rd snoozingnewt 🇨🇦 952 66 130ms 5 Dec 2025 493rd edsrzf 🇳🇿 952 66 130ms 2 hours ago 532nd ShadowGorn 951 59 11ms 10 Feb 2018 532nd oshlern 951 59 10ms 12 Aug 2018 532nd C-a-m-e-r-o-n 951 59 11ms 11 Jun 2019 532nd chartung17 951 59 10ms 20 Dec 2023 532nd balloffur 951 59 10ms 10 Dec 2025 537th Lydxn 🇨🇦 950 22 2ms 13 Jan 2022 537th SirBogman 🇺🇸 950 22 2ms 27 Mar 2022 537th Steffan153 🇫🇮 950 22 3ms 8 Feb 2023 537th Natanaelel 🇸🇪 950 22 2ms 21 Oct 2023 537th DialFrost 🇸🇬 950 22 2ms 31 Jan 2024 537th fuzzylojik-golf 🇺🇸 950 22 2ms 17 Sep 2025 537th emgordon154 950 22 2ms 7 Oct 2025 544th MLJWare 949 68 1ms 20 Jul 2018 544th cafehaine 🇫🇷 949 68 1ms 9 Apr 2019 544th primo-ppcg 🇹🇭 949 68 2ms 15 Feb 2020 544th prplz 🇦🇺 949 68 1ms 24 Feb 2020 544th Attero 🇸🇪 949 68 2ms 8 Mar 2020 544th GalladeGuy 🇺🇸 949 68 1ms 21 May 2020 544th Waffle3z 949 68 1ms 14 Oct 2020 544th Jiramide 949 68 2ms 17 Oct 2020 544th Irratix 🇳🇱 949 68 1ms 15 Jan 2021 544th DaDerpDuck 949 68 2ms 21 Jan 2021 544th GrayJoKing 🇦🇺 949 68 1ms 21 Jan 2021 544th sisyphus-ppcg 🇦🇺 949 68 1ms 8 Jun 2021 544th Shanethegamer 🇺🇸 949 68 2ms 20 Jul 2021 544th JayXon 🇺🇸 949 68 2ms 14 Sep 2021 544th jared-hughes 949 68 2ms 16 Feb 2022 544th btnlq 949 68 2ms 25 Dec 2022 544th GoateSo 949 68 1ms 14 Aug 2023 First Prev 481–560 of 5,522 Next Last
