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 713th ZakkkkAttackkkk 🇵🇭 897 40 8ms 27 Jul 2022 713th Yax42 🇫🇷 897 40 9ms 5 Sep 2025 713th KasperKivimaeki 🇫🇮 897 40 9ms 12 days ago 724th MeWhenI 🇻🇦 897 48 13ms 15 Nov 2021 724th arjanadriaanse 🇳🇱 897 48 9ms 28 Sep 2023 724th Yewzir 🇧🇪 897 48 12ms 11 Nov 2023 727th cure-honey 🇯🇵 897 66 25ms 8 Jul 2021 727th sisyphus-ppcg 🇦🇺 897 66 25ms 8 Jul 2021 727th primo-ppcg 🇹🇭 897 66 25ms 8 Jul 2021 727th JayXon 🇺🇸 897 66 25ms 8 Jul 2021 727th prplz 🇦🇺 897 66 24ms 8 Jul 2021 727th MeWhenI 🇻🇦 897 66 25ms 9 Sep 2022 727th fuzzylojik-golf 🇺🇸 897 66 25ms 26 Aug 2025 734th sisyphus-ppcg 🇦🇺 896 40 40ms 16 Sep 2021 735th Irratix 🇳🇱 896 43 117ms 25 Dec 2020 735th lynn 896 43 111ms 19 May 2021 735th Yewzir 🇧🇪 896 43 102ms 14 Oct 2023 735th DialFrost 🇸🇬 896 43 104ms 24 Aug 2024 739th m-tkach 🇺🇦 896 72 57ms 2 Jan 2022 739th Irratix 🇳🇱 896 72 62ms 3 Jan 2022 739th inventshah 896 72 58ms 18 Jan 2022 739th MeWhenI 🇻🇦 896 72 62ms 8 May 2022 739th solmyr2000 896 72 59ms 20 Jun 2022 739th michael-pruglo 🇺🇦 896 72 58ms 14 Jul 2022 739th Alex-x90 🇺🇸 896 72 60ms 30 Jul 2022 739th jared-hughes 896 72 56ms 8 Sep 2022 739th Yewzir 🇧🇪 896 72 57ms 14 Oct 2023 739th Betuaredead 896 72 55ms 12 Nov 2023 739th Mandrzejy 🇵🇱 896 72 66ms 14 Apr 2024 739th pardouin 🇫🇷 896 72 60ms 23 Aug 2024 739th rucin93 🇵🇱 896 72 53ms 14 Apr 2025 752nd JayXon 🇺🇸 895 39 124ms 4 Aug 2024 752nd Steffan153 🇫🇮 895 39 121ms 4 Aug 2024 752nd sean-niemann 🇺🇸 895 39 124ms 4 Aug 2024 752nd Lydxn 🇨🇦 895 39 122ms 6 Aug 2024 752nd pardouin 🇫🇷 895 39 119ms 23 Aug 2024 752nd rucin93 🇵🇱 895 39 122ms 11 Sep 2024 758th ovs-code 🇩🇪 893 49 5ms 10 Dec 2023 758th MeWhenI 🇻🇦 893 49 5ms 12 Dec 2023 758th Kaffeleif 893 49 5ms 28 Jan 2024 758th steffan-polygolf 893 49 5ms 8 Mar 2024 758th Maximizer02 893 49 6ms 30 Jul 2024 758th Babafaba 893 49 6ms 14 Oct 2025 764th dpatterbee 893 84 261ms 20 Aug 2020 764th primo-ppcg 🇹🇭 893 84 274ms 10 Oct 2020 764th janbehrens 🇩🇪 893 84 272ms 12 Jun 2021 764th sisyphus-ppcg 🇦🇺 893 84 263ms 14 Jun 2021 764th albanian-laundromat 893 84 271ms 23 days ago 769th sisyphus-ppcg 🇦🇺 891 41 1ms 10 Jun 2021 769th lynn 891 41 1ms 18 Nov 2021 769th jared-hughes 891 41 2ms 16 Feb 2022 769th steffan-polygolf 891 41 1ms 24 Feb 2023 769th GrayJoKing 🇦🇺 891 41 1ms 23 Mar 2023 769th xsot 🇸🇬 891 41 1ms 21 Oct 2023 769th synt7x 🇺🇸 891 41 2ms 14 Jul 2025 769th fuzzylojik-golf 🇺🇸 891 41 1ms 2 Sep 2025 777th RYNO8 891 44 9ms 28 Aug 2021 777th MeWhenI 🇻🇦 891 44 5ms 16 Dec 2024 779th wuzekai518 891 61 119ms 25 Jun 2024 779th Babafaba 891 61 115ms 11 Oct 2025 781st steffan-polygolf 888 40 357ms 7 Mar 2024 781st Jacob385 888 40 411ms 13 Aug 2024 783rd primo-ppcg 🇹🇭 886 26 104ms 19 Oct 2020 783rd prplz 🇦🇺 886 26 106ms 2 Nov 2020 783rd o0lit3 🇺🇸 886 26 93ms 23 Dec 2020 783rd sisyphus-ppcg 🇦🇺 886 26 108ms 4 Jan 2021 783rd Natanaelel 🇸🇪 886 26 118ms 24 Sep 2021 783rd Steffan153 🇫🇮 886 26 115ms 16 Dec 2022 783rd ovs-code 🇩🇪 886 26 112ms 1 Jan 2024 783rd sean-niemann 🇺🇸 886 26 100ms 7 Mar 2025 791st sisyphus-ppcg 🇦🇺 885 28 2ms 4 Feb 2022 791st HPWiz 🇳🇿 885 28 3ms 12 May 2024 791st saito-ta 🇯🇵 885 28 3ms 20 Aug 2025 794th Steffan153 🇫🇮 885 37 2ms 5 Aug 2024 795th Lydxn 🇨🇦 885 65 25ms 13 Jan 2023 795th Shanethegamer 🇺🇸 885 65 27ms 22 Mar 2023 795th lynn 885 65 26ms 11 Jul 2023 795th GrayJoKing 🇦🇺 885 65 25ms 11 Aug 2023 795th m-tkach 🇺🇦 885 65 25ms 11 Aug 2023 800th prplz 🇦🇺 884 53 1ms 6 Mar 2019 First Prev 721–800 of 4,068 Next Last