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 712th Yax42 🇫🇷 897 40 9ms 5 Sep 2025 712th KasperKivimaeki 🇫🇮 897 40 9ms 4 days ago 723rd MeWhenI 🇻🇦 897 48 13ms 15 Nov 2021 723rd arjanadriaanse 🇳🇱 897 48 9ms 28 Sep 2023 723rd Yewzir 🇧🇪 897 48 12ms 11 Nov 2023 726th cure-honey 🇯🇵 897 66 25ms 8 Jul 2021 726th sisyphus-ppcg 🇦🇺 897 66 25ms 8 Jul 2021 726th primo-ppcg 🇹🇭 897 66 25ms 8 Jul 2021 726th JayXon 🇺🇸 897 66 25ms 8 Jul 2021 726th prplz 🇦🇺 897 66 24ms 8 Jul 2021 726th MeWhenI 🇻🇦 897 66 25ms 9 Sep 2022 726th fuzzylojik-golf 🇺🇸 897 66 25ms 26 Aug 2025 733rd sisyphus-ppcg 🇦🇺 896 40 40ms 16 Sep 2021 734th Irratix 🇳🇱 896 43 117ms 25 Dec 2020 734th lynn 896 43 111ms 19 May 2021 734th Yewzir 🇧🇪 896 43 102ms 14 Oct 2023 734th DialFrost 🇸🇬 896 43 104ms 24 Aug 2024 738th m-tkach 🇺🇦 896 72 85ms 2 Jan 2022 738th Irratix 🇳🇱 896 72 72ms 3 Jan 2022 738th inventshah 896 72 74ms 18 Jan 2022 738th MeWhenI 🇻🇦 896 72 83ms 8 May 2022 738th solmyr2000 896 72 65ms 20 Jun 2022 738th michael-pruglo 🇺🇦 896 72 67ms 14 Jul 2022 738th Alex-x90 🇺🇸 896 72 68ms 30 Jul 2022 738th jared-hughes 896 72 64ms 8 Sep 2022 738th Yewzir 🇧🇪 896 72 75ms 14 Oct 2023 738th Betuaredead 896 72 73ms 12 Nov 2023 738th Mandrzejy 🇵🇱 896 72 70ms 14 Apr 2024 738th pardouin 🇫🇷 896 72 83ms 23 Aug 2024 738th rucin93 🇵🇱 896 72 62ms 14 Apr 2025 751st JayXon 🇺🇸 895 39 124ms 4 Aug 2024 751st Steffan153 🇫🇮 895 39 121ms 4 Aug 2024 751st sean-niemann 🇺🇸 895 39 124ms 4 Aug 2024 751st Lydxn 🇨🇦 895 39 122ms 6 Aug 2024 751st pardouin 🇫🇷 895 39 119ms 23 Aug 2024 751st rucin93 🇵🇱 895 39 122ms 11 Sep 2024 757th sisyphus-ppcg 🇦🇺 894 41 1ms 10 Jun 2021 757th lynn 894 41 1ms 18 Nov 2021 757th jared-hughes 894 41 1ms 16 Feb 2022 757th steffan-polygolf 894 41 1ms 24 Feb 2023 757th GrayJoKing 🇦🇺 894 41 2ms 23 Mar 2023 757th xsot 🇸🇬 894 41 2ms 21 Oct 2023 757th synt7x 🇺🇸 894 41 1ms 14 Jul 2025 757th fuzzylojik-golf 🇺🇸 894 41 1ms 2 Sep 2025 765th ovs-code 🇩🇪 893 49 5ms 10 Dec 2023 765th MeWhenI 🇻🇦 893 49 5ms 12 Dec 2023 765th Kaffeleif 893 49 5ms 28 Jan 2024 765th steffan-polygolf 893 49 5ms 8 Mar 2024 765th Maximizer02 893 49 6ms 30 Jul 2024 765th Babafaba 893 49 6ms 14 Oct 2025 771st dpatterbee 893 84 261ms 20 Aug 2020 771st primo-ppcg 🇹🇭 893 84 274ms 10 Oct 2020 771st janbehrens 🇩🇪 893 84 272ms 12 Jun 2021 771st sisyphus-ppcg 🇦🇺 893 84 263ms 14 Jun 2021 771st albanian-laundromat 893 84 271ms 15 days ago 776th RYNO8 891 44 9ms 28 Aug 2021 776th MeWhenI 🇻🇦 891 44 5ms 16 Dec 2024 778th wuzekai518 891 61 119ms 25 Jun 2024 778th Babafaba 891 61 115ms 11 Oct 2025 780th steffan-polygolf 888 40 357ms 7 Mar 2024 780th Jacob385 888 40 411ms 13 Aug 2024 782nd primo-ppcg 🇹🇭 886 26 163ms 19 Oct 2020 782nd prplz 🇦🇺 886 26 149ms 2 Nov 2020 782nd o0lit3 🇺🇸 886 26 149ms 23 Dec 2020 782nd sisyphus-ppcg 🇦🇺 886 26 185ms 4 Jan 2021 782nd Natanaelel 🇸🇪 886 26 99ms 24 Sep 2021 782nd Steffan153 🇫🇮 886 26 126ms 16 Dec 2022 782nd ovs-code 🇩🇪 886 26 127ms 1 Jan 2024 782nd sean-niemann 🇺🇸 886 26 93ms 7 Mar 2025 790th sisyphus-ppcg 🇦🇺 885 28 2ms 4 Feb 2022 790th HPWiz 🇳🇿 885 28 3ms 12 May 2024 790th saito-ta 🇯🇵 885 28 3ms 20 Aug 2025 793rd Steffan153 🇫🇮 885 37 2ms 5 Aug 2024 794th Lydxn 🇨🇦 885 65 25ms 13 Jan 2023 794th Shanethegamer 🇺🇸 885 65 27ms 22 Mar 2023 794th lynn 885 65 26ms 11 Jul 2023 794th GrayJoKing 🇦🇺 885 65 25ms 11 Aug 2023 794th m-tkach 🇺🇦 885 65 25ms 11 Aug 2023 799th prplz 🇦🇺 884 53 1ms 6 Mar 2019 799th Attero 🇸🇪 884 53 1ms 26 Apr 2020 First Prev 721–800 of 4,071 Next Last