The Calendar hole will go live in approximately 12 days. Why not try and solve it ahead of time?
Evil 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 638th Lv0Sys 🇵🇱 914 43 10ms 20 days ago 642nd Attero 🇸🇪 914 56 368ms 21 Nov 2021 642nd btnlq 914 56 357ms 21 Nov 2021 642nd iznax 914 56 339ms 21 Nov 2021 642nd janbehrens 🇩🇪 914 56 362ms 21 Nov 2021 642nd MeWhenI 🇻🇦 914 56 333ms 21 Nov 2021 642nd nathanadams 🇳🇿 914 56 351ms 21 Nov 2021 642nd nwellnhof 🇩🇪 914 56 329ms 21 Nov 2021 642nd primo-ppcg 🇹🇭 914 56 376ms 21 Nov 2021 642nd prplz 🇦🇺 914 56 379ms 21 Nov 2021 642nd ScottHamper 914 56 355ms 21 Nov 2021 642nd sisyphus-ppcg 🇦🇺 914 56 356ms 21 Nov 2021 642nd tomtheisen 🇺🇸 914 56 359ms 21 Nov 2021 642nd Irratix 🇳🇱 914 56 366ms 13 Dec 2021 642nd Giga-Bowser 914 56 357ms 20 Dec 2021 642nd p-vf 🇨🇭 914 56 343ms 16 Jul 2022 642nd Yewzir 🇧🇪 914 56 368ms 14 Oct 2023 642nd Betuaredead 914 56 323ms 12 Nov 2023 642nd Herbert00709 🇵🇱 914 56 337ms 22 Dec 2023 642nd billings7 🇬🇧 914 56 365ms 21 May 2024 642nd pardouin 🇫🇷 914 56 353ms 4 Sep 2024 642nd albanian-laundromat 914 56 365ms 30 Sep 2025 663rd rucin93 🇵🇱 913 44 2ms 6 Aug 2024 663rd Steffan153 🇫🇮 913 44 2ms 6 Aug 2024 663rd JayXon 🇺🇸 913 44 2ms 6 Aug 2024 663rd Lydxn 🇨🇦 913 44 2ms 6 Aug 2024 663rd sean-niemann 🇺🇸 913 44 5ms 6 Aug 2024 668th pardouin 🇫🇷 913 61 570ms 26 Sep 2025 668th sisyphus-ppcg 🇦🇺 913 61 493ms 23 days ago 668th ScottHamper 913 61 424ms 19 days ago 671st Lydxn 🇨🇦 912 46 2ms 29 Sep 2022 671st Steffan153 🇫🇮 912 46 3ms 2 Aug 2024 671st sean-niemann 🇺🇸 912 46 2ms 6 Mar 2025 674th Lydxn 🇨🇦 912 48 69ms 15 May 2022 674th Shanethegamer 🇺🇸 912 48 63ms 16 May 2022 674th GrayJoKing 🇦🇺 912 48 66ms 21 May 2022 674th Steffan153 🇫🇮 912 48 67ms 1 Oct 2022 674th JayXon 🇺🇸 912 48 67ms 19 Mar 2023 674th Yewzir 🇧🇪 912 48 67ms 9 Nov 2023 674th Betuaredead 912 48 69ms 13 Nov 2023 674th Steffan153 🇫🇮 912 48 6ms 11 Dec 2023 674th Shanethegamer 🇺🇸 912 48 6ms 11 Dec 2023 674th Lydxn 🇨🇦 912 48 6ms 20 Dec 2023 674th dokutan 912 48 6ms 9 May 2024 674th pardouin 🇫🇷 912 48 64ms 3 Sep 2024 674th DialFrost 🇸🇬 912 48 5ms 15 Dec 2024 674th edsrzf 🇳🇿 912 48 7ms 5 Jan 2025 674th zacjl 912 48 5ms 12 Feb 2025 674th sean-niemann 🇺🇸 912 48 67ms 18 Apr 2025 674th sean-niemann 🇺🇸 912 48 5ms 19 Apr 2025 674th kg583 🇺🇸 912 48 6ms 30 Jul 2025 674th albanian-laundromat 912 48 66ms 2 Oct 2025 674th snoozingnewt 🇨🇦 912 48 66ms 12 days ago 694th Steffan153 🇫🇮 911 35 1ms 2 Aug 2024 695th canissimia 🇦🇶 911 131 2ms 10 Jul 2021 696th Shanethegamer 🇺🇸 910 30 966ms 18 May 2021 696th prplz 🇦🇺 910 30 854ms 5 Jun 2021 696th lynn 910 30 957ms 1 Jun 2022 696th SirBogman 🇺🇸 910 30 935ms 7 Sep 2022 696th MeWhenI 🇻🇦 910 30 979ms 5 Aug 2023 696th inventshah 910 30 1,039ms 27 Sep 2023 696th Yewzir 🇧🇪 910 30 1,031ms 7 Feb 2024 696th ovs-code 🇩🇪 910 30 970ms 22 Apr 2024 696th edsrzf 🇳🇿 910 30 891ms 15 Jan 2025 696th snoozingnewt 🇨🇦 910 30 738ms 7 days ago 706th ovs-code 🇩🇪 910 39 366ms 15 Jan 2024 706th DialFrost 🇸🇬 910 39 371ms 15 Jan 2024 706th commandblockguy 🇺🇸 910 39 410ms 15 Jan 2024 706th SirBogman 🇺🇸 910 39 323ms 15 Jan 2024 706th rucin93 🇵🇱 910 39 351ms 15 Jan 2024 706th bizy-coder 910 39 331ms 15 Jan 2024 706th kg583 🇺🇸 910 39 366ms 15 Jan 2024 706th Yewzir 🇧🇪 910 39 349ms 15 Jan 2024 706th GrayJoKing 🇦🇺 910 39 342ms 15 Jan 2024 706th GolfingSuccess 🇬🇷 910 39 348ms 15 Jan 2024 706th neel11235813 910 39 412ms 16 Jan 2024 706th AlephSquirrel 910 39 351ms 16 Jan 2024 706th m-tkach 🇺🇦 910 39 416ms 20 Jan 2024 706th inventshah 910 39 355ms 21 Jan 2024 706th xsot 🇸🇬 910 39 339ms 25 Jan 2024 First Prev 641–720 of 5,023 Next Last