The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Odious Numbers 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 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 Minesweeper 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 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 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel 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 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel 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 Minesweeper 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 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 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 479th btnlq 916 47 12ms 9 Dec 2021 479th Lydxn 🇨🇦 916 47 13ms 9 Jan 2022 479th JayXon 🇺🇸 916 47 12ms 15 Feb 2022 479th primo-ppcg 🇹🇭 916 47 12ms 2 Jun 2022 479th Steffan153 🇫🇮 916 47 13ms 8 Oct 2022 479th annaproxy 916 47 12ms 8 Jan 2023 479th lynn 916 47 13ms 25 Oct 2023 479th HumanEquivalentUnit 916 47 12ms 17 Nov 2023 479th ovs-code 🇩🇪 916 47 13ms 30 Jun 2024 479th sean-niemann 🇺🇸 916 47 13ms 25 Mar 2025 479th DialFrost 🇸🇬 916 47 13ms 10 Apr 2025 479th snoozingnewt 🇨🇦 916 47 14ms 10 days ago 493rd m-tkach 🇺🇦 916 48 99ms 13 Oct 2022 493rd Lydxn 🇨🇦 916 48 99ms 14 Oct 2022 493rd sisyphus-ppcg 🇦🇺 916 48 100ms 14 Oct 2022 493rd Steffan153 🇫🇮 916 48 100ms 14 Oct 2022 493rd JayXon 🇺🇸 916 48 97ms 14 Oct 2022 493rd sean-niemann 🇺🇸 916 48 99ms 14 Oct 2022 493rd MeWhenI 🇻🇦 916 48 99ms 15 Oct 2022 493rd stefangimmillaro 916 48 98ms 15 Oct 2022 493rd emplv 🇱🇻 916 48 100ms 26 Oct 2022 493rd Alex-x90 🇺🇸 916 48 99ms 2 Jan 2023 493rd DialFrost 🇸🇬 916 48 100ms 26 Sep 2023 493rd Betuaredead 916 48 100ms 13 Nov 2023 493rd Yewzir 🇧🇪 916 48 98ms 18 Nov 2023 493rd pardouin 🇫🇷 916 48 100ms 22 Aug 2024 493rd fuzzylojik-golf 🇺🇸 916 48 103ms 13 Sep 2025 493rd snoozingnewt 🇨🇦 916 48 100ms 6 days ago 509th bendiscz 915 82 268ms 21 Apr 2020 509th emplv 🇱🇻 915 82 245ms 1 Oct 2020 509th nwellnhof 🇩🇪 915 82 274ms 10 Oct 2020 509th MeWhenI 🇻🇦 915 82 265ms 4 Nov 2021 509th m-tkach 🇺🇦 915 82 270ms 14 Jun 2023 509th DialFrost 🇸🇬 915 82 280ms 26 Sep 2023 509th Yewzir 🇧🇪 915 82 270ms 25 Oct 2023 509th Betuaredead 915 82 266ms 13 Nov 2023 509th kkoenig 915 82 267ms 2 Jan 2024 509th Shanethegamer 🇺🇸 915 82 268ms 7 Feb 2024 509th pardouin 🇫🇷 915 82 263ms 23 Aug 2024 509th GolfingSuccess 🇬🇷 915 82 268ms 16 Aug 2025 509th Babafaba 915 82 257ms 11 Oct 2025 522nd sisyphus-ppcg 🇦🇺 914 34 297ms 24 Jan 2023 522nd Shanethegamer 🇺🇸 914 34 280ms 22 Mar 2023 522nd ovs-code 🇩🇪 914 34 329ms 12 Mar 2024 525th JayXon 🇺🇸 914 46 1,199ms 28 May 2021 525th Lydxn 🇨🇦 914 46 1,229ms 9 Mar 2022 525th sean-niemann 🇺🇸 914 46 1,304ms 18 Apr 2025 528th JayXon 🇺🇸 913 37 1ms 19 Nov 2025 528th rucin93 🇵🇱 913 37 2ms 20 Nov 2025 528th sean-niemann 🇺🇸 913 37 1ms 20 Nov 2025 531st Lydxn 🇨🇦 913 46 2ms 9 Sep 2022 531st JayXon 🇺🇸 913 46 2ms 10 Sep 2022 531st btnlq 913 46 2ms 12 Sep 2022 531st Steffan153 🇫🇮 913 46 2ms 17 Feb 2023 531st sisyphus-ppcg 🇦🇺 913 46 2ms 23 Mar 2023 531st sean-niemann 🇺🇸 913 46 2ms 6 Aug 2024 531st fuzzylojik-golf 🇺🇸 913 46 2ms 4 Sep 2025 538th Shanethegamer 🇺🇸 912 30 1,008ms 18 May 2021 538th prplz 🇦🇺 912 30 997ms 5 Jun 2021 538th lynn 912 30 1,060ms 1 Jun 2022 538th SirBogman 🇺🇸 912 30 962ms 7 Sep 2022 538th inventshah 912 30 911ms 27 Sep 2023 538th Yewzir 🇧🇪 912 30 1,193ms 7 Feb 2024 538th snoozingnewt 🇨🇦 912 30 825ms 6 days ago 545th Constructor7 912 43 9ms 22 Feb 2018 545th kmaork 🇮🇱 912 43 9ms 18 Apr 2018 545th marcin7Cd 912 43 9ms 3 Sep 2019 545th stu303 912 43 9ms 30 Dec 2020 545th Indivicivet 912 43 9ms 26 Oct 2021 545th MichaelMBradley 🇨🇦 912 43 9ms 29 Mar 2022 545th ZakkkkAttackkkk 🇵🇭 912 43 9ms 27 Jul 2022 545th dzshn 912 43 9ms 24 Aug 2022 545th FlorianCassayre 🇫🇷 912 43 13ms 30 Oct 2022 545th OhmNomNom 912 43 9ms 30 Oct 2022 545th Skwerl23 912 43 10ms 5 Feb 2023 545th 2011-Chan-Ethan 912 43 9ms 9 Jul 2023 545th 1231234md5 🇨🇳 912 43 9ms 12 Dec 2023 545th fourth-bit 912 43 9ms 3 Jul 2024 545th starfihs 912 43 12ms 7 Jul 2024 545th alemelis 912 43 9ms 13 Sep 2024 First Prev 481–560 of 4,071 Next Last