The Calendar hole will go live in approximately 13 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 558th MeWhenI 🇻🇦 893 54 2ms 7 Sep 2022 558th janbehrens 🇩🇪 893 54 2ms 7 Sep 2022 558th Alex-x90 🇺🇸 893 54 2ms 9 Sep 2022 558th sisyphus-ppcg 🇦🇺 893 54 2ms 20 Sep 2022 558th Irratix 🇳🇱 893 54 2ms 11 Dec 2022 558th DialFrost 🇸🇬 893 54 2ms 1 Sep 2023 558th Attero 🇸🇪 893 54 2ms 23 Sep 2023 558th Yewzir 🇧🇪 893 54 2ms 14 Oct 2023 558th JohandeRuiter 🇳🇱 893 54 2ms 6 Nov 2023 558th Betuaredead 893 54 2ms 11 Nov 2023 558th Mandrzejy 🇵🇱 893 54 2ms 14 Apr 2024 558th emgordon154 893 54 2ms 25 Nov 2024 558th m-tkach 🇺🇦 893 54 2ms 9 days ago 558th Mukundan314 893 54 2ms 8 days ago 575th pardouin 🇫🇷 892 49 4,294ms 23 Oct 2024 575th inventshah 892 49 3,535ms 25 Oct 2024 575th DialFrost 🇸🇬 892 49 4,072ms 25 Oct 2024 575th btnlq 892 49 3,863ms 25 Oct 2024 575th sean-niemann 🇺🇸 892 49 3,764ms 25 Oct 2024 575th stefangimmillaro 892 49 3,451ms 28 Oct 2024 575th snoozingnewt 🇨🇦 892 49 4,082ms 25 Oct 2025 575th Babafaba 892 49 4,001ms 25 Oct 2025 583rd sean-niemann 🇺🇸 892 51 121ms 8 Oct 2024 584th MeWhenI 🇻🇦 891 45 7ms 16 Dec 2024 585th GrayJoKing 🇦🇺 891 49 3ms 10 Sep 2022 585th Steffan153 🇫🇮 891 49 2ms 19 Aug 2024 587th Lydxn 🇨🇦 891 70 27ms 13 Jan 2023 588th primo-ppcg 🇹🇭 891 74 69ms 9 Sep 2022 588th Irratix 🇳🇱 891 74 58ms 15 Dec 2022 588th 09cf 891 74 66ms 22 days ago 591st steffan-polygolf 890 41 380ms 7 Mar 2024 591st Jacob385 890 41 399ms 13 Aug 2024 593rd steffan-polygolf 890 48 2ms 23 Feb 2023 593rd MWI-polygolf 890 48 2ms 29 Dec 2023 595th Lydxn 🇨🇦 889 41 2ms 15 Jan 2024 595th Steffan153 🇫🇮 889 41 2ms 16 Jan 2024 597th MeWhenI 🇻🇦 889 44 98ms 7 Sep 2022 597th Yewzir 🇧🇪 889 44 105ms 14 Oct 2023 597th DialFrost 🇸🇬 889 44 97ms 24 Aug 2024 600th JayXon 🇺🇸 889 53 37ms 8 Sep 2022 600th GrayJoKing 🇦🇺 889 53 36ms 1 Mar 2023 602nd sisyphus-ppcg 🇦🇺 888 40 7ms 6 Sep 2022 603rd MWI-polygolf 888 42 9ms 6 Dec 2023 603rd targrik 888 42 8ms 14 Feb 2025 605th GrayJoKing 🇦🇺 888 69 432ms 7 Sep 2022 605th sean-niemann 🇺🇸 888 69 434ms 27 Feb 2023 605th Steffan153 🇫🇮 888 69 438ms 6 Mar 2023 605th fuzzylojik-golf 🇺🇸 888 69 440ms 20 Aug 2025 609th alemelis 887 45 10ms 13 Sep 2024 610th emgordon154 886 39 5ms 6 Jun 2025 611th Lydxn 🇨🇦 882 81 2ms 20 Jul 2023 612th anter69 🇭🇺 881 32 836ms 10 Mar 2025 613th janbehrens 🇩🇪 881 85 267ms 7 Sep 2022 613th albanian-laundromat 881 85 248ms 15 days ago 615th canissimia 🇦🇶 881 123 2ms 16 Nov 2023 616th sisyphus-ppcg 🇦🇺 880 29 3ms 7 Sep 2022 616th HPWiz 🇳🇿 880 29 3ms 12 May 2024 616th saito-ta 🇯🇵 880 29 3ms 20 Aug 2025 619th jared-hughes 879 22 33ms 8 Sep 2022 619th yzhs 🇩🇪 879 22 35ms 21 Jun 2023 619th Yewzir 🇧🇪 879 22 34ms 26 Dec 2023 619th AshyIsMe 🇦🇺 879 22 33ms 2 Aug 2024 623rd JayXon 🇺🇸 879 62 76ms 20 Mar 2023 624th MeWhenI 🇻🇦 879 75 67ms 7 Sep 2022 624th janbehrens 🇩🇪 879 75 55ms 7 Sep 2022 626th MeWhenI 🇻🇦 877 51 8ms 12 Dec 2023 627th pardouin 🇫🇷 876 55 2ms 23 Aug 2024 628th scpchicken 🇵🇼 875 16 2ms 10 Mar 2023 628th lifthrasiir 🇰🇷 875 16 2ms 28 Nov 2024 628th gnuvince 875 16 2ms 29 Jun 2025 631st MeWhenI 🇻🇦 875 52 120ms 7 Sep 2022 631st stefangimmillaro 875 52 127ms 16 Sep 2023 631st fuzzylojik-golf 🇺🇸 875 52 123ms 29 Aug 2025 634th MeWhenI 🇻🇦 875 70 422ms 7 Sep 2022 634th janbehrens 🇩🇪 875 70 420ms 7 Sep 2022 634th Yewzir 🇧🇪 875 70 425ms 14 Oct 2023 634th DialFrost 🇸🇬 875 70 446ms 26 Oct 2023 634th Betuaredead 875 70 458ms 13 Nov 2023 634th pardouin 🇫🇷 875 70 458ms 23 Aug 2024 634th emgordon154 875 70 417ms 25 May 2025 First Prev 561–640 of 2,509 Next Last