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 545th lifthrasiir 🇰🇷 912 43 9ms 12 Nov 2024 545th dirckvdende 912 43 10ms 20 Jul 2025 545th iczelia 🇩🇪 912 43 10ms 16 Oct 2025 564th Steffan153 🇫🇮 912 48 6ms 11 Dec 2023 564th Yewzir 🇧🇪 912 48 5ms 11 Dec 2023 564th Shanethegamer 🇺🇸 912 48 5ms 11 Dec 2023 564th Lydxn 🇨🇦 912 48 5ms 20 Dec 2023 564th dokutan 912 48 6ms 4 May 2024 564th emgordon154 912 48 5ms 5 Dec 2024 564th DialFrost 🇸🇬 912 48 6ms 15 Dec 2024 564th zacjl 912 48 5ms 16 Dec 2024 564th edsrzf 🇳🇿 912 48 6ms 5 Jan 2025 564th sean-niemann 🇺🇸 912 48 5ms 19 Apr 2025 564th kg583 🇺🇸 912 48 7ms 30 Jul 2025 564th snoozingnewt 🇨🇦 912 48 6ms 17 days ago 576th DialFrost 🇸🇬 911 39 329ms 15 Jan 2024 576th ovs-code 🇩🇪 911 39 350ms 15 Jan 2024 576th SirBogman 🇺🇸 911 39 355ms 15 Jan 2024 576th rucin93 🇵🇱 911 39 344ms 15 Jan 2024 576th commandblockguy 🇺🇸 911 39 343ms 15 Jan 2024 576th kg583 🇺🇸 911 39 374ms 15 Jan 2024 576th Yewzir 🇧🇪 911 39 346ms 15 Jan 2024 576th GrayJoKing 🇦🇺 911 39 345ms 15 Jan 2024 576th GolfingSuccess 🇬🇷 911 39 335ms 15 Jan 2024 576th Lydxn 🇨🇦 911 39 339ms 15 Jan 2024 576th neel11235813 911 39 341ms 16 Jan 2024 576th AlephSquirrel 911 39 344ms 16 Jan 2024 576th sisyphus-ppcg 🇦🇺 911 39 372ms 17 Jan 2024 576th m-tkach 🇺🇦 911 39 338ms 20 Jan 2024 576th inventshah 911 39 341ms 21 Jan 2024 576th xsot 🇸🇬 911 39 346ms 25 Jan 2024 576th BREMAUCY 🇫🇷 911 39 345ms 25 Jan 2024 576th lynn 911 39 343ms 17 Feb 2024 576th duckyluuk 🇳🇱 911 39 337ms 27 Mar 2024 576th MeWhenI 🇻🇦 911 39 340ms 24 May 2024 576th pardouin 🇫🇷 911 39 418ms 21 Jun 2024 576th CaedenHarper 🇨🇦 911 39 349ms 24 Jul 2024 576th b-illy 🇬🇧 911 39 365ms 7 Sep 2024 576th emgordon154 911 39 363ms 16 Nov 2024 576th fuzzylojik-golf 🇺🇸 911 39 348ms 30 May 2025 576th CornerMercury 🇬🇧 911 39 328ms 12 Oct 2025 576th Babafaba 911 39 346ms 14 Oct 2025 576th snoozingnewt 🇨🇦 911 39 356ms 25 Oct 2025 604th Lydxn 🇨🇦 911 47 70ms 15 May 2022 604th Shanethegamer 🇺🇸 911 47 68ms 16 May 2022 604th GrayJoKing 🇦🇺 911 47 70ms 21 May 2022 604th Steffan153 🇫🇮 911 47 72ms 8 Oct 2022 604th JayXon 🇺🇸 911 47 68ms 19 Mar 2023 604th Yewzir 🇧🇪 911 47 71ms 9 Nov 2023 604th Betuaredead 911 47 69ms 13 Nov 2023 604th pardouin 🇫🇷 911 47 65ms 3 Sep 2024 604th sean-niemann 🇺🇸 911 47 66ms 18 Apr 2025 604th albanian-laundromat 911 47 64ms 2 Oct 2025 604th snoozingnewt 🇨🇦 911 47 62ms 11 days ago 615th pardouin 🇫🇷 911 62 446ms 24 Sep 2025 615th emgordon154 911 62 397ms 25 Sep 2025 615th GolfingSuccess 🇬🇷 911 62 431ms 25 Sep 2025 615th nwellnhof 🇩🇪 911 62 454ms 25 Sep 2025 615th Yewzir 🇧🇪 911 62 426ms 2 Oct 2025 615th Apataras 911 62 455ms 7 Oct 2025 615th MeWhenI 🇻🇦 911 62 417ms 7 Nov 2025 615th sisyphus-ppcg 🇦🇺 911 62 361ms 22 days ago 615th ScottHamper 911 62 432ms 17 days ago 624th m-tkach 🇺🇦 911 65 25ms 24 May 2022 624th emplv 🇱🇻 911 65 24ms 17 Aug 2022 624th Lydxn 🇨🇦 911 65 25ms 21 Nov 2022 624th Steffan153 🇫🇮 911 65 24ms 17 Feb 2023 624th Shanethegamer 🇺🇸 911 65 24ms 22 Mar 2023 624th sean-niemann 🇺🇸 911 65 25ms 14 Jan 2025 630th saito-ta 🇯🇵 909 36 1ms 23 Jun 2023 631st DialFrost 🇸🇬 909 37 662ms 29 Aug 2025 631st sean-niemann 🇺🇸 909 37 663ms 29 Aug 2025 631st rucin93 🇵🇱 909 37 675ms 29 Aug 2025 631st fuzzylojik-golf 🇺🇸 909 37 663ms 22 Sep 2025 635th sisyphus-ppcg 🇦🇺 909 57 324ms 21 Nov 2021 635th ZakkkkAttackkkk 🇵🇭 909 57 355ms 27 Jul 2022 637th JayXon 🇺🇸 909 71 72ms 1 Jan 2022 637th nwellnhof 🇩🇪 909 71 72ms 3 Jan 2022 637th sean-niemann 🇺🇸 909 71 63ms 21 Jun 2023 637th DialFrost 🇸🇬 909 71 54ms 16 Jan 2024 First Prev 561–640 of 4,071 Next Last