The Calendar hole will go live in approximately 8 days. Why not try and solve it ahead of time?
Odious Numbers (Long) 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 481st Waffle3z 907 47 2ms 6 Sep 2022 481st GrayJoKing 🇦🇺 907 47 6ms 7 Sep 2022 481st jared-hughes 907 47 3ms 8 Sep 2022 481st Steffan153 🇫🇮 907 47 3ms 10 Dec 2022 481st btnlq 907 47 3ms 28 Dec 2022 481st MeWhenI 🇻🇦 907 47 5ms 29 Dec 2022 481st DialFrost 🇸🇬 907 47 2ms 8 Feb 2023 481st sean-niemann 🇺🇸 907 47 2ms 24 Jul 2023 481st Yewzir 🇧🇪 907 47 2ms 18 Nov 2023 481st NickTheEASDude 🇺🇸 907 47 5ms 1 Feb 2024 481st FlyingPenguin223 907 47 2ms 26 Oct 2024 481st fuzzylojik-golf 🇺🇸 907 47 2ms 1 Jul 2025 481st synt7x 🇺🇸 907 47 2ms 14 Jul 2025 481st GolfingSuccess 🇬🇷 907 47 2ms 24 Sep 2025 481st snoozingnewt 🇨🇦 907 47 2ms 25 Oct 2025 496th Lydxn 🇨🇦 906 52 37ms 1 Mar 2023 497th edsrzf 🇳🇿 904 57 40ms 30 Dec 2024 497th DialFrost 🇸🇬 904 57 44ms 13 Feb 2025 497th zacjl 904 57 42ms 13 Feb 2025 497th kg583 🇺🇸 904 57 42ms 13 Feb 2025 497th pardouin 🇫🇷 904 57 43ms 25 Apr 2025 502nd m-tkach 🇺🇦 903 67 24ms 6 Sep 2022 502nd Lydxn 🇨🇦 903 67 25ms 6 Sep 2022 502nd JayXon 🇺🇸 903 67 24ms 6 Sep 2022 502nd primo-ppcg 🇹🇭 903 67 25ms 9 Sep 2022 502nd MeWhenI 🇻🇦 903 67 25ms 9 Sep 2022 502nd fuzzylojik-golf 🇺🇸 903 67 24ms 26 Aug 2025 508th inventshah 903 73 83ms 6 Sep 2022 508th jared-hughes 903 73 55ms 6 Sep 2022 508th Alex-x90 🇺🇸 903 73 72ms 9 Sep 2022 508th DialFrost 🇸🇬 903 73 78ms 1 Sep 2023 508th Yewzir 🇧🇪 903 73 62ms 14 Oct 2023 508th Betuaredead 903 73 66ms 12 Nov 2023 508th Mandrzejy 🇵🇱 903 73 61ms 12 Jul 2024 508th pardouin 🇫🇷 903 73 80ms 23 Aug 2024 516th Steffan153 🇫🇮 902 53 4ms 19 Apr 2023 516th primo-ppcg 🇹🇭 902 53 4ms 26 Apr 2023 516th Lydxn 🇨🇦 902 53 5ms 21 Jul 2023 516th sean-niemann 🇺🇸 902 53 4ms 21 Apr 2025 520th MeWhenI 🇻🇦 902 83 266ms 7 Sep 2022 520th GrayJoKing 🇦🇺 902 83 267ms 7 Sep 2022 520th emplv 🇱🇻 902 83 242ms 7 Sep 2022 520th nwellnhof 🇩🇪 902 83 279ms 11 Sep 2022 520th m-tkach 🇺🇦 902 83 260ms 14 Jun 2023 520th DialFrost 🇸🇬 902 83 263ms 26 Sep 2023 520th Yewzir 🇧🇪 902 83 274ms 25 Oct 2023 520th kkoenig 902 83 259ms 2 Jan 2024 520th pardouin 🇫🇷 902 83 265ms 23 Aug 2024 529th Lydxn 🇨🇦 901 68 457ms 6 Sep 2022 529th JayXon 🇺🇸 901 68 375ms 20 Jan 2023 531st saito-ta 🇯🇵 899 37 5ms 9 Nov 2023 532nd 4hg 🇺🇸 899 40 62ms 14 Sep 2023 532nd Lydxn 🇨🇦 899 40 71ms 14 Sep 2023 532nd chunes3 🇺🇸 899 40 68ms 14 Sep 2023 532nd Steffan153 🇫🇮 899 40 68ms 15 Sep 2023 532nd gifti258 899 40 67ms 15 Sep 2023 532nd GolfingSuccess 🇬🇷 899 40 65ms 18 Sep 2023 532nd Yewzir 🇧🇪 899 40 63ms 5 Mar 2024 539th JayXon 🇺🇸 899 54 1,256ms 9 Sep 2022 540th sisyphus-ppcg 🇦🇺 898 37 89ms 12 Dec 2022 541st MeWhenI 🇻🇦 897 47 77ms 7 Sep 2022 541st GrayJoKing 🇦🇺 897 47 76ms 7 Sep 2022 541st steffan-polygolf 897 47 79ms 23 Feb 2023 541st DialFrost 🇸🇬 897 47 78ms 27 Sep 2023 541st Yewzir 🇧🇪 897 47 80ms 17 Nov 2023 541st MWI-polygolf 897 47 77ms 6 Dec 2023 547th MeWhenI 🇻🇦 897 50 96ms 15 Oct 2022 548th ovs-code 🇩🇪 895 50 8ms 10 Dec 2023 548th Kaffeleif 895 50 7ms 28 Jan 2024 548th steffan-polygolf 895 50 8ms 8 Mar 2024 548th Maximizer02 895 50 7ms 30 Jul 2024 548th emgordon154 895 50 8ms 10 Dec 2024 548th Babafaba 895 50 9ms 14 Oct 2025 554th Lydxn 🇨🇦 895 63 122ms 12 Aug 2023 555th GrayJoKing 🇦🇺 894 51 6ms 16 Jul 2023 555th Lydxn 🇨🇦 894 51 6ms 16 Jul 2023 557th Lydxn 🇨🇦 894 61 72ms 5 Apr 2023 558th prplz 🇦🇺 893 54 2ms 6 Sep 2022 558th inventshah 893 54 2ms 6 Sep 2022 558th jared-hughes 893 54 2ms 6 Sep 2022 First Prev 481–560 of 2,506 Next Last