The Calendar hole will go live in approximately 5 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 878th namelessiw 871 45 10ms 5 Mar 2024 878th elgan65536 871 45 9ms 4 Apr 2024 878th wuzekai518 871 45 9ms 25 Jun 2024 878th Stockoh 🇫🇷 871 45 10ms 17 Nov 2024 878th bzijlema 🇳🇱 871 45 10ms 3 Jul 2025 878th janlelis 871 45 9ms 16 Aug 2025 887th primo-ppcg 🇹🇭 869 54 115ms 3 Jul 2019 887th marcin7Cd 869 54 117ms 11 Mar 2020 887th andersk 🇺🇸 869 54 112ms 24 Mar 2020 887th Shanethegamer 🇺🇸 869 54 115ms 22 Mar 2023 887th btnlq 869 54 116ms 15 Oct 2023 892nd Shanethegamer 🇺🇸 869 65 418ms 25 Sep 2025 893rd DialFrost 🇸🇬 869 114 459ms 12 Jan 2025 893rd GolfingSuccess 🇬🇷 869 114 444ms 12 Jan 2025 893rd emgordon154 869 114 467ms 12 Jan 2025 893rd Shanethegamer 🇺🇸 869 114 504ms 13 Jan 2025 893rd dokutan 869 114 468ms 13 Jan 2025 893rd KatieLG 🇬🇧 869 114 508ms 13 Jan 2025 893rd HumanoidCPU 869 114 468ms 13 Jan 2025 893rd ovs-code 🇩🇪 869 114 495ms 24 Jan 2025 893rd CaedenHarper 🇨🇦 869 114 462ms 25 Jan 2025 893rd MeWhenI 🇻🇦 869 114 470ms 9 Feb 2025 893rd pardouin 🇫🇷 869 114 501ms 25 Feb 2025 893rd rucin93 🇵🇱 869 114 550ms 12 Mar 2025 893rd albanian-laundromat 869 114 434ms 10 Jul 2025 893rd snoozingnewt 🇨🇦 869 114 476ms 18 days ago 907th marcin7Cd 868 114 10ms 12 Oct 2020 907th Attero 🇸🇪 868 114 9ms 12 Oct 2020 907th sisyphus-ppcg 🇦🇺 868 114 10ms 30 May 2021 907th SirBogman 🇺🇸 868 114 10ms 28 Nov 2021 907th ovs-code 🇩🇪 868 114 10ms 22 Apr 2022 907th jmerle 🇳🇱 868 114 9ms 19 Jun 2023 913th lifthrasiir 🇰🇷 867 15 2ms 28 Nov 2024 914th kaurakeksi 🇫🇮 867 54 2ms 1 Jan 2025 915th Lydxn 🇨🇦 866 39 1ms 8 Oct 2023 915th GrayJoKing 🇦🇺 866 39 1ms 9 Oct 2023 915th Steffan153 🇫🇮 866 39 2ms 9 Oct 2023 918th HumanoidCPU 866 41 328ms 4 May 2024 919th sisyphus-ppcg 🇦🇺 866 66 459ms 28 Feb 2022 919th Steffan153 🇫🇮 866 66 441ms 20 Jul 2024 919th fuzzylojik-golf 🇺🇸 866 66 466ms 6 Aug 2025 922nd annaproxy 864 60 311ms 28 Mar 2022 922nd Shanethegamer 🇺🇸 864 60 317ms 22 Mar 2023 922nd Babafaba 864 60 348ms 11 Oct 2025 925th ETHproductions 🇺🇸 863 36 262ms 16 Aug 2019 925th primo-ppcg 🇹🇭 863 36 261ms 10 Oct 2020 927th emgordon154 863 87 255ms 17 Jan 2025 927th snoozingnewt 🇨🇦 863 87 299ms 25 Oct 2025 929th dokutan 862 39 650ms 30 Aug 2025 929th CaedenHarper 🇨🇦 862 39 661ms 9 Sep 2025 929th albanian-laundromat 862 39 649ms 12 Sep 2025 929th edsrzf 🇳🇿 862 39 646ms 13 Sep 2025 929th pardouin 🇫🇷 862 39 667ms 25 days ago 934th retrohun 861 38 2ms 22 Mar 2019 934th sisyphus-ppcg 🇦🇺 861 38 1ms 19 Jan 2022 936th ZakkkkAttackkkk 🇵🇭 860 75 58ms 27 Jul 2022 936th luuumine 🇫🇷 860 75 58ms 8 Nov 2025 938th KatieLG-Transpiler 🇬🇧 860 115 9ms 24 Jun 2022 939th primo-ppcg 🇹🇭 858 49 1,206ms 11 May 2020 939th btnlq 858 49 1,198ms 5 Jul 2020 939th Steffan153 🇫🇮 858 49 1,254ms 17 Feb 2023 939th Shanethegamer 🇺🇸 858 49 1,212ms 20 Jul 2023 943rd GrayJoKing 🇦🇺 858 69 24ms 8 Jul 2021 943rd Laksen 🇩🇰 858 69 24ms 8 Jul 2021 943rd gidHog 858 69 25ms 20 Nov 2023 943rd ben-j-herbertz 858 69 24ms 21 Nov 2023 943rd dpethes 858 69 25ms 15 days ago 948th emgordon154 858 119 1,765ms 2 days ago 949th targrik 857 41 5ms 10 days ago 950th nwellnhof 🇩🇪 856 27 216ms 26 Nov 2022 950th IISResetMe 856 27 204ms 1 Jul 2023 950th SirBogman 🇺🇸 856 27 216ms 5 Jan 2024 950th dcgjb 856 27 211ms 24 Jan 2024 950th DialFrost 🇸🇬 856 27 221ms 6 Jun 2024 950th Steffan153 🇫🇮 856 27 231ms 7 Aug 2024 950th juliansiebert 🇩🇪 856 27 230ms 2 Feb 2025 950th sean-niemann 🇺🇸 856 27 221ms 25 Mar 2025 950th bitsandbeyond 🇳🇱 856 27 205ms 13 Oct 2025 959th clockworknazo 856 46 3ms 29 Sep 2022 959th Lydxn 🇨🇦 856 46 3ms 29 Sep 2022 First Prev 881–960 of 4,068 Next Last