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 chars. 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 Chars Time Submitted 561st IanUtley 915 47 8ms 17 Nov 2021 561st GrayJoKing 🇦🇺 915 47 12ms 23 Nov 2021 561st btnlq 915 47 12ms 9 Dec 2021 561st Lydxn 🇨🇦 915 47 13ms 9 Jan 2022 561st lynn 915 47 13ms 2 Feb 2022 561st JayXon 🇺🇸 915 47 12ms 15 Feb 2022 561st primo-ppcg 🇹🇭 915 47 13ms 2 Jun 2022 561st Steffan153 🇫🇮 915 47 12ms 1 Oct 2022 561st annaproxy 915 47 12ms 8 Jan 2023 561st ovs-code 🇩🇪 915 47 12ms 30 Jun 2024 561st sean-niemann 🇺🇸 915 47 13ms 25 Mar 2025 561st DialFrost 🇸🇬 915 47 13ms 10 Apr 2025 561st snoozingnewt 🇨🇦 915 47 13ms 10 days ago 574th m-tkach 🇺🇦 915 48 130ms 13 Oct 2022 574th Lydxn 🇨🇦 915 48 123ms 14 Oct 2022 574th sisyphus-ppcg 🇦🇺 915 48 115ms 14 Oct 2022 574th JayXon 🇺🇸 915 48 121ms 14 Oct 2022 574th Steffan153 🇫🇮 915 48 101ms 14 Oct 2022 574th sean-niemann 🇺🇸 915 48 132ms 14 Oct 2022 574th MeWhenI 🇻🇦 915 48 137ms 15 Oct 2022 574th stefangimmillaro 915 48 120ms 15 Oct 2022 574th emplv 🇱🇻 915 48 111ms 26 Oct 2022 574th Alex-x90 🇺🇸 915 48 99ms 2 Jan 2023 574th DialFrost 🇸🇬 915 48 121ms 26 Sep 2023 574th Betuaredead 915 48 97ms 13 Nov 2023 574th Yewzir 🇧🇪 915 48 124ms 18 Nov 2023 574th pardouin 🇫🇷 915 48 97ms 22 Aug 2024 574th fuzzylojik-golf 🇺🇸 915 48 102ms 13 Sep 2025 574th snoozingnewt 🇨🇦 915 48 105ms 6 days ago 590th Lydxn 🇨🇦 914 37 1ms 8 Oct 2023 590th JayXon 🇺🇸 914 37 1ms 9 Oct 2023 590th Steffan153 🇫🇮 914 37 1ms 2 Aug 2024 590th rucin93 🇵🇱 914 37 2ms 3 Aug 2024 590th sean-niemann 🇺🇸 914 37 1ms 6 Aug 2024 595th stu303 914 43 9ms 30 Dec 2020 595th Krtecik 914 43 10ms 9 Feb 2024 595th alemelis 914 43 9ms 13 Sep 2024 595th Lv0Sys 🇵🇱 914 43 10ms 19 days ago 599th DialFrost 🇸🇬 914 55 363ms 16 Jan 2024 599th fuzzylojik-golf 🇺🇸 914 55 346ms 20 Aug 2025 601st rucin93 🇵🇱 913 44 2ms 6 Aug 2024 601st Steffan153 🇫🇮 913 44 2ms 6 Aug 2024 601st JayXon 🇺🇸 913 44 2ms 6 Aug 2024 601st Lydxn 🇨🇦 913 44 2ms 6 Aug 2024 601st sean-niemann 🇺🇸 913 44 5ms 6 Aug 2024 606th rucin93 🇵🇱 913 60 444ms 24 Sep 2025 606th DialFrost 🇸🇬 913 60 456ms 26 Sep 2025 606th fuzzylojik-golf 🇺🇸 913 60 366ms 26 Sep 2025 606th namelessiw 913 60 426ms 2 Oct 2025 606th stefangimmillaro 913 60 425ms 6 Oct 2025 606th KasperKivimaeki 🇫🇮 913 60 390ms 16 days ago 612th Lydxn 🇨🇦 912 46 2ms 29 Sep 2022 612th Steffan153 🇫🇮 912 46 3ms 2 Aug 2024 612th sean-niemann 🇺🇸 912 46 2ms 6 Mar 2025 615th Steffan153 🇫🇮 911 35 1ms 2 Aug 2024 616th canissimia 🇦🇶 911 131 2ms 10 Jul 2021 617th Shanethegamer 🇺🇸 910 30 966ms 18 May 2021 617th prplz 🇦🇺 910 30 854ms 5 Jun 2021 617th lynn 910 30 957ms 1 Jun 2022 617th SirBogman 🇺🇸 910 30 935ms 7 Sep 2022 617th MeWhenI 🇻🇦 910 30 979ms 5 Aug 2023 617th inventshah 910 30 1,039ms 27 Sep 2023 617th Yewzir 🇧🇪 910 30 1,031ms 7 Feb 2024 617th ovs-code 🇩🇪 910 30 970ms 22 Apr 2024 617th edsrzf 🇳🇿 910 30 891ms 15 Jan 2025 617th snoozingnewt 🇨🇦 910 30 738ms 6 days ago 627th andersk 🇺🇸 910 58 122ms 6 Jan 2020 628th Lydxn 🇨🇦 910 60 442ms 27 Feb 2022 628th JayXon 🇺🇸 910 60 425ms 28 Feb 2022 628th sean-niemann 🇺🇸 910 60 446ms 6 Mar 2025 631st Lydxn 🇨🇦 909 40 3ms 16 Jul 2023 632nd Lydxn 🇨🇦 909 58 1ms 19 Jul 2023 633rd sean-niemann 🇺🇸 908 36 717ms 29 Aug 2025 633rd fuzzylojik-golf 🇺🇸 908 36 654ms 22 Sep 2025 635th Lydxn 🇨🇦 908 64 25ms 7 Jul 2021 635th cure-honey 🇯🇵 908 64 25ms 8 Jul 2021 635th sisyphus-ppcg 🇦🇺 908 64 24ms 8 Jul 2021 635th primo-ppcg 🇹🇭 908 64 24ms 8 Jul 2021 635th JayXon 🇺🇸 908 64 24ms 8 Jul 2021 635th prplz 🇦🇺 908 64 25ms 8 Jul 2021 First Prev 561–640 of 4,991 Next Last