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 558th fuzzylojik-golf 🇺🇸 919 81 275ms 15 Jul 2025 558th KasperKivimaeki 🇫🇮 919 81 266ms 29 Sep 2025 558th emplv 🇱🇻 919 81 243ms 4 days ago 564th JayXon 🇺🇸 918 37 120ms 4 Aug 2024 564th Steffan153 🇫🇮 918 37 119ms 4 Aug 2024 564th sean-niemann 🇺🇸 918 37 120ms 4 Aug 2024 564th lukegustafson 🇺🇸 918 37 118ms 5 Aug 2024 564th Lydxn 🇨🇦 918 37 122ms 6 Aug 2024 564th pardouin 🇫🇷 918 37 121ms 23 Aug 2024 564th rucin93 🇵🇱 918 37 126ms 28 Aug 2024 571st JayXon 🇺🇸 917 40 94ms 17 Feb 2021 571st Lydxn 🇨🇦 917 40 86ms 9 Mar 2022 571st Steffan153 🇫🇮 917 40 90ms 2 Aug 2024 571st sean-niemann 🇺🇸 917 40 94ms 6 Aug 2024 571st JayXon 🇺🇸 917 40 3,994ms 27 Oct 2024 571st sean-niemann 🇺🇸 917 40 4,281ms 14 Mar 2025 577th Lydxn 🇨🇦 916 41 37ms 4 Sep 2023 578th JayXon 🇺🇸 915 45 1,215ms 28 May 2021 578th Lydxn 🇨🇦 915 45 1,229ms 9 Mar 2022 578th Steffan153 🇫🇮 915 45 1,201ms 2 Aug 2024 578th sean-niemann 🇺🇸 915 45 1,223ms 18 Apr 2025 582nd IanUtley 915 47 8ms 17 Nov 2021 582nd GrayJoKing 🇦🇺 915 47 12ms 23 Nov 2021 582nd btnlq 915 47 12ms 9 Dec 2021 582nd Lydxn 🇨🇦 915 47 13ms 9 Jan 2022 582nd lynn 915 47 13ms 2 Feb 2022 582nd JayXon 🇺🇸 915 47 12ms 15 Feb 2022 582nd primo-ppcg 🇹🇭 915 47 13ms 2 Jun 2022 582nd Steffan153 🇫🇮 915 47 12ms 1 Oct 2022 582nd annaproxy 915 47 12ms 8 Jan 2023 582nd ovs-code 🇩🇪 915 47 12ms 30 Jun 2024 582nd sean-niemann 🇺🇸 915 47 13ms 25 Mar 2025 582nd DialFrost 🇸🇬 915 47 13ms 10 Apr 2025 582nd snoozingnewt 🇨🇦 915 47 13ms 11 days ago 595th m-tkach 🇺🇦 915 48 130ms 13 Oct 2022 595th Lydxn 🇨🇦 915 48 123ms 14 Oct 2022 595th sisyphus-ppcg 🇦🇺 915 48 115ms 14 Oct 2022 595th JayXon 🇺🇸 915 48 121ms 14 Oct 2022 595th Steffan153 🇫🇮 915 48 101ms 14 Oct 2022 595th sean-niemann 🇺🇸 915 48 132ms 14 Oct 2022 595th MeWhenI 🇻🇦 915 48 137ms 15 Oct 2022 595th stefangimmillaro 915 48 120ms 15 Oct 2022 595th emplv 🇱🇻 915 48 111ms 26 Oct 2022 595th Alex-x90 🇺🇸 915 48 99ms 2 Jan 2023 595th DialFrost 🇸🇬 915 48 121ms 26 Sep 2023 595th Betuaredead 915 48 97ms 13 Nov 2023 595th Yewzir 🇧🇪 915 48 124ms 18 Nov 2023 595th pardouin 🇫🇷 915 48 97ms 22 Aug 2024 595th fuzzylojik-golf 🇺🇸 915 48 102ms 13 Sep 2025 595th snoozingnewt 🇨🇦 915 48 105ms 8 days ago 611th nwellnhof 🇩🇪 915 72 52ms 3 Jan 2022 611th primo-ppcg 🇹🇭 915 72 49ms 18 Jan 2022 611th Shanethegamer 🇺🇸 915 72 66ms 3 Apr 2023 611th DialFrost 🇸🇬 915 72 68ms 16 Jan 2024 611th ovs-code 🇩🇪 915 72 68ms 8 Jun 2024 611th Herbert00709 🇵🇱 915 72 59ms 12 Jul 2024 611th MostParsingVex 915 72 81ms 26 Aug 2024 611th fuzzylojik-golf 🇺🇸 915 72 66ms 20 Aug 2025 611th 09cf 915 72 64ms 23 days ago 620th MeWhenI 🇻🇦 914 30 4ms 2 May 2022 621st Lydxn 🇨🇦 914 37 1ms 8 Oct 2023 621st JayXon 🇺🇸 914 37 1ms 9 Oct 2023 621st Steffan153 🇫🇮 914 37 1ms 2 Aug 2024 621st rucin93 🇵🇱 914 37 2ms 3 Aug 2024 621st sean-niemann 🇺🇸 914 37 1ms 6 Aug 2024 626th Steffan153 🇫🇮 914 38 3ms 16 Apr 2023 626th Shanethegamer 🇺🇸 914 38 3ms 16 Apr 2023 626th Lydxn 🇨🇦 914 38 4ms 18 Apr 2023 626th AlephSquirrel 914 38 3ms 19 Apr 2023 626th primo-ppcg 🇹🇭 914 38 4ms 27 Apr 2023 626th Yewzir 🇧🇪 914 38 3ms 14 May 2023 626th MeWhenI 🇻🇦 914 38 4ms 23 May 2023 626th GrayJoKing 🇦🇺 914 38 4ms 13 Aug 2023 626th edsrzf 🇳🇿 914 38 4ms 2 Nov 2024 626th emgordon154 914 38 3ms 22 Dec 2024 626th sean-niemann 🇺🇸 914 38 4ms 21 Apr 2025 626th kg583 🇺🇸 914 38 4ms 25 Sep 2025 638th stu303 914 43 9ms 30 Dec 2020 638th Krtecik 914 43 10ms 9 Feb 2024 638th alemelis 914 43 9ms 13 Sep 2024 First Prev 561–640 of 5,023 Next Last