The Calendar hole will go live in approximately 5 days. Why not try and solve it ahead of time?
Evil Numbers (Long) 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 401st m-tkach 🇺🇦 916 50 114ms 13 Oct 2022 401st Lydxn 🇨🇦 916 50 108ms 14 Oct 2022 401st sisyphus-ppcg 🇦🇺 916 50 112ms 14 Oct 2022 401st Steffan153 🇫🇮 916 50 111ms 14 Oct 2022 401st JayXon 🇺🇸 916 50 110ms 14 Oct 2022 401st sean-niemann 🇺🇸 916 50 98ms 14 Oct 2022 401st MeWhenI 🇻🇦 916 50 118ms 15 Oct 2022 401st stefangimmillaro 916 50 125ms 15 Oct 2022 401st emplv 🇱🇻 916 50 112ms 26 Oct 2022 401st Alex-x90 🇺🇸 916 50 124ms 2 Jan 2023 401st DialFrost 🇸🇬 916 50 108ms 26 Sep 2023 401st Betuaredead 916 50 111ms 13 Nov 2023 401st Yewzir 🇧🇪 916 50 108ms 18 Nov 2023 401st pardouin 🇫🇷 916 50 100ms 22 Aug 2024 401st fuzzylojik-golf 🇺🇸 916 50 98ms 13 Sep 2025 401st snoozingnewt 🇨🇦 916 50 103ms 14 days ago 417th DialFrost 🇸🇬 916 63 451ms 26 Sep 2025 417th pardouin 🇫🇷 916 63 601ms 26 Sep 2025 417th Yewzir 🇧🇪 916 63 465ms 2 Oct 2025 420th Lydxn 🇨🇦 915 47 86ms 7 Sep 2022 420th JayXon 🇺🇸 915 47 88ms 13 Sep 2022 420th stefangimmillaro 915 47 78ms 13 Jun 2023 420th sean-niemann 🇺🇸 915 47 77ms 17 Jun 2023 420th Steffan153 🇫🇮 915 47 76ms 13 Mar 2024 420th fuzzylojik-golf 🇺🇸 915 47 75ms 2 Sep 2025 426th JayXon 🇺🇸 915 82 269ms 13 Jun 2023 426th stefangimmillaro 915 82 262ms 13 Jun 2023 426th Lydxn 🇨🇦 915 82 259ms 15 Jun 2023 426th sean-niemann 🇺🇸 915 82 271ms 17 Jun 2023 426th Steffan153 🇫🇮 915 82 253ms 13 Mar 2024 426th fuzzylojik-golf 🇺🇸 915 82 299ms 20 Aug 2025 432nd MeWhenI 🇻🇦 914 20 2ms 24 Feb 2025 433rd Lydxn 🇨🇦 914 39 40ms 6 Sep 2022 433rd marshallward 🇺🇸 914 39 37ms 6 Sep 2022 433rd JayXon 🇺🇸 914 39 39ms 6 Sep 2022 433rd primo-ppcg 🇹🇭 914 39 39ms 9 Sep 2022 437th Shanethegamer 🇺🇸 914 49 8ms 11 Dec 2023 437th Steffan153 🇫🇮 914 49 8ms 11 Dec 2023 437th Lydxn 🇨🇦 914 49 8ms 20 Dec 2023 437th dokutan 914 49 8ms 9 May 2024 437th DialFrost 🇸🇬 914 49 7ms 15 Dec 2024 437th edsrzf 🇳🇿 914 49 7ms 5 Jan 2025 437th zacjl 914 49 8ms 12 Feb 2025 437th sean-niemann 🇺🇸 914 49 7ms 19 Apr 2025 437th kg583 🇺🇸 914 49 9ms 30 Jul 2025 446th edsrzf 🇳🇿 914 58 41ms 30 Dec 2024 446th zacjl 914 58 40ms 13 Feb 2025 446th DialFrost 🇸🇬 914 58 40ms 13 Feb 2025 446th kg583 🇺🇸 914 58 41ms 13 Feb 2025 446th pardouin 🇫🇷 914 58 42ms 25 Apr 2025 451st AdrienHache 🇫🇷 913 39 51ms 25 Mar 2024 451st lyphyser 913 39 54ms 27 Mar 2024 453rd Lydxn 🇨🇦 913 48 13ms 6 Sep 2022 453rd JayXon 🇺🇸 913 48 12ms 6 Sep 2022 453rd GrayJoKing 🇦🇺 913 48 13ms 7 Sep 2022 453rd btnlq 913 48 13ms 7 Sep 2022 453rd primo-ppcg 🇹🇭 913 48 13ms 9 Sep 2022 453rd IanUtley 913 48 13ms 20 Sep 2022 453rd Steffan153 🇫🇮 913 48 13ms 1 Oct 2022 453rd annaproxy 913 48 13ms 8 Jan 2023 453rd lynn 913 48 13ms 25 Oct 2023 453rd HumanEquivalentUnit 913 48 13ms 23 Nov 2023 453rd ovs-code 🇩🇪 913 48 13ms 30 Jun 2024 453rd sean-niemann 🇺🇸 913 48 14ms 25 Mar 2025 453rd DialFrost 🇸🇬 913 48 13ms 10 Apr 2025 453rd snoozingnewt 🇨🇦 913 48 13ms 18 days ago 467th sisyphus-ppcg 🇦🇺 913 52 2ms 20 Sep 2022 467th inventshah 913 52 2ms 25 Nov 2022 467th Attero 🇸🇪 913 52 2ms 23 Sep 2023 467th prplz 🇦🇺 913 52 2ms 7 Jan 2025 467th pardouin 🇫🇷 913 52 2ms 31 May 2025 467th emgordon154 913 52 2ms 10 days ago 473rd MeWhenI 🇻🇦 912 41 9ms 6 Sep 2022 473rd dmrichwa 🇺🇸 912 41 8ms 6 Sep 2022 473rd inventshah 912 41 9ms 6 Sep 2022 473rd GrayJoKing 🇦🇺 912 41 8ms 6 Sep 2022 473rd Irratix 🇳🇱 912 41 9ms 7 Sep 2022 473rd emplv 🇱🇻 912 41 9ms 7 Sep 2022 473rd janbehrens 🇩🇪 912 41 9ms 7 Sep 2022 473rd itsh01 912 41 9ms 7 Sep 2022 First Prev 401–480 of 2,752 Next Last