The Calendar hole will go live in approximately 13 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 641st Attero 🇸🇪 914 56 368ms 21 Nov 2021 641st btnlq 914 56 357ms 21 Nov 2021 641st iznax 914 56 339ms 21 Nov 2021 641st janbehrens 🇩🇪 914 56 362ms 21 Nov 2021 641st MeWhenI 🇻🇦 914 56 333ms 21 Nov 2021 641st nathanadams 🇳🇿 914 56 351ms 21 Nov 2021 641st nwellnhof 🇩🇪 914 56 329ms 21 Nov 2021 641st primo-ppcg 🇹🇭 914 56 376ms 21 Nov 2021 641st prplz 🇦🇺 914 56 379ms 21 Nov 2021 641st ScottHamper 914 56 355ms 21 Nov 2021 641st sisyphus-ppcg 🇦🇺 914 56 356ms 21 Nov 2021 641st tomtheisen 🇺🇸 914 56 359ms 21 Nov 2021 641st Irratix 🇳🇱 914 56 366ms 13 Dec 2021 641st Giga-Bowser 914 56 357ms 20 Dec 2021 641st p-vf 🇨🇭 914 56 343ms 16 Jul 2022 641st Yewzir 🇧🇪 914 56 368ms 14 Oct 2023 641st Betuaredead 914 56 323ms 12 Nov 2023 641st Herbert00709 🇵🇱 914 56 337ms 22 Dec 2023 641st billings7 🇬🇧 914 56 365ms 21 May 2024 641st pardouin 🇫🇷 914 56 353ms 4 Sep 2024 641st albanian-laundromat 914 56 365ms 30 Sep 2025 662nd rucin93 🇵🇱 913 44 2ms 6 Aug 2024 662nd Steffan153 🇫🇮 913 44 2ms 6 Aug 2024 662nd JayXon 🇺🇸 913 44 2ms 6 Aug 2024 662nd Lydxn 🇨🇦 913 44 2ms 6 Aug 2024 662nd sean-niemann 🇺🇸 913 44 5ms 6 Aug 2024 667th pardouin 🇫🇷 913 61 570ms 26 Sep 2025 667th sisyphus-ppcg 🇦🇺 913 61 493ms 22 days ago 667th ScottHamper 913 61 424ms 18 days ago 670th Lydxn 🇨🇦 912 46 2ms 29 Sep 2022 670th Steffan153 🇫🇮 912 46 3ms 2 Aug 2024 670th sean-niemann 🇺🇸 912 46 2ms 6 Mar 2025 673rd Lydxn 🇨🇦 912 48 69ms 15 May 2022 673rd Shanethegamer 🇺🇸 912 48 63ms 16 May 2022 673rd GrayJoKing 🇦🇺 912 48 66ms 21 May 2022 673rd Steffan153 🇫🇮 912 48 67ms 1 Oct 2022 673rd JayXon 🇺🇸 912 48 67ms 19 Mar 2023 673rd Yewzir 🇧🇪 912 48 67ms 9 Nov 2023 673rd Betuaredead 912 48 69ms 13 Nov 2023 673rd Steffan153 🇫🇮 912 48 6ms 11 Dec 2023 673rd Shanethegamer 🇺🇸 912 48 6ms 11 Dec 2023 673rd Lydxn 🇨🇦 912 48 6ms 20 Dec 2023 673rd dokutan 912 48 6ms 9 May 2024 673rd pardouin 🇫🇷 912 48 64ms 3 Sep 2024 673rd DialFrost 🇸🇬 912 48 5ms 15 Dec 2024 673rd edsrzf 🇳🇿 912 48 7ms 5 Jan 2025 673rd zacjl 912 48 5ms 12 Feb 2025 673rd sean-niemann 🇺🇸 912 48 67ms 18 Apr 2025 673rd sean-niemann 🇺🇸 912 48 5ms 19 Apr 2025 673rd kg583 🇺🇸 912 48 6ms 30 Jul 2025 673rd albanian-laundromat 912 48 66ms 2 Oct 2025 673rd snoozingnewt 🇨🇦 912 48 66ms 11 days ago 693rd Steffan153 🇫🇮 911 35 1ms 2 Aug 2024 694th canissimia 🇦🇶 911 131 2ms 10 Jul 2021 695th Shanethegamer 🇺🇸 910 30 966ms 18 May 2021 695th prplz 🇦🇺 910 30 854ms 5 Jun 2021 695th lynn 910 30 957ms 1 Jun 2022 695th SirBogman 🇺🇸 910 30 935ms 7 Sep 2022 695th MeWhenI 🇻🇦 910 30 979ms 5 Aug 2023 695th inventshah 910 30 1,039ms 27 Sep 2023 695th Yewzir 🇧🇪 910 30 1,031ms 7 Feb 2024 695th ovs-code 🇩🇪 910 30 970ms 22 Apr 2024 695th edsrzf 🇳🇿 910 30 891ms 15 Jan 2025 695th snoozingnewt 🇨🇦 910 30 738ms 7 days ago 705th ovs-code 🇩🇪 910 39 366ms 15 Jan 2024 705th DialFrost 🇸🇬 910 39 371ms 15 Jan 2024 705th commandblockguy 🇺🇸 910 39 410ms 15 Jan 2024 705th SirBogman 🇺🇸 910 39 323ms 15 Jan 2024 705th rucin93 🇵🇱 910 39 351ms 15 Jan 2024 705th bizy-coder 910 39 331ms 15 Jan 2024 705th kg583 🇺🇸 910 39 366ms 15 Jan 2024 705th Yewzir 🇧🇪 910 39 349ms 15 Jan 2024 705th GrayJoKing 🇦🇺 910 39 342ms 15 Jan 2024 705th GolfingSuccess 🇬🇷 910 39 348ms 15 Jan 2024 705th neel11235813 910 39 412ms 16 Jan 2024 705th AlephSquirrel 910 39 351ms 16 Jan 2024 705th m-tkach 🇺🇦 910 39 416ms 20 Jan 2024 705th inventshah 910 39 355ms 21 Jan 2024 705th xsot 🇸🇬 910 39 339ms 25 Jan 2024 705th BREMAUCY 🇫🇷 910 39 364ms 25 Jan 2024 First Prev 641–720 of 5,023 Next Last