The Calendar hole will go live in approximately 13 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 720th MeWhenI 🇻🇦 869 58 1,276ms 7 Jun 2023 720th fuzzylojik-golf 🇺🇸 869 58 1,276ms 2 Sep 2025 723rd emgordon154 865 71 435ms 25 May 2025 724th dokutan 864 40 674ms 30 Aug 2025 724th CaedenHarper 🇨🇦 864 40 685ms 9 Sep 2025 724th albanian-laundromat 864 40 662ms 12 Sep 2025 724th pardouin 🇫🇷 864 40 675ms 17 days ago 728th primo-ppcg 🇹🇭 863 55 2ms 9 Sep 2022 728th stefangimmillaro 863 55 2ms 12 Jun 2023 728th retrohun 863 55 2ms 29 Mar 2024 728th AdrienHache 🇫🇷 863 55 5ms 17 days ago 732nd 0xjac 🇨🇭 863 87 269ms 17 Jun 2025 732nd CaedenHarper 🇨🇦 863 87 257ms 5 Oct 2025 734th jared-hughes 863 123 11ms 18 Dec 2024 735th blaztoma 🇱🇹 862 80 103ms 18 days ago 735th DialFrost 🇸🇬 862 80 99ms 16 days ago 735th snoozingnewt 🇨🇦 862 80 93ms 5 days ago 738th emgordon154 862 126 463ms 20 Mar 2025 738th MeWhenI 🇻🇦 862 126 486ms 28 Mar 2025 740th ovs-code 🇩🇪 861 52 8ms 10 Dec 2023 740th MeWhenI 🇻🇦 861 52 8ms 12 Dec 2023 740th Kaffeleif 861 52 9ms 28 Jan 2024 740th steffan-polygolf 861 52 7ms 8 Mar 2024 740th Maximizer02 861 52 8ms 30 Jul 2024 740th emgordon154 861 52 8ms 10 Dec 2024 740th Babafaba 861 52 8ms 14 Oct 2025 747th btnlq 861 58 122ms 15 Oct 2023 748th biocommando 🇫🇮 861 62 371ms 19 Aug 2023 749th MeWhenI 🇻🇦 861 66 122ms 6 Sep 2022 749th wuzekai518 861 66 121ms 18 Jun 2024 751st DialFrost 🇸🇬 859 156 12ms 13 Aug 2025 752nd MeWhenI 🇻🇦 857 55 36ms 9 Sep 2022 752nd Steffan153 🇫🇮 857 55 37ms 22 Oct 2022 752nd sean-niemann 🇺🇸 857 55 40ms 21 Apr 2023 752nd Yewzir 🇧🇪 857 55 36ms 14 Oct 2023 752nd pardouin 🇫🇷 857 55 36ms 5 Oct 2024 752nd fuzzylojik-golf 🇺🇸 857 55 35ms 6 Sep 2025 752nd DialFrost 🇸🇬 857 55 39ms 3 days ago 759th emgordon154 857 121 1,694ms 16 Sep 2025 760th MeWhenI 🇻🇦 856 33 1,032ms 13 Nov 2022 761st Natanaelel 🇸🇪 856 42 71ms 26 Sep 2023 761st dokutan 856 42 65ms 13 Sep 2024 763rd ovs-code 🇩🇪 856 124 11ms 9 Jul 2024 764th GrayJoKing 🇦🇺 854 59 1,273ms 6 Sep 2022 765th sean-niemann 🇺🇸 852 31 2ms 14 May 2025 766th janbehrens 🇩🇪 852 46 4ms 7 Sep 2022 766th stefangimmillaro 852 46 4ms 29 Oct 2022 766th DialFrost 🇸🇬 852 46 4ms 20 Sep 2023 766th fuzzylojik-golf 🇺🇸 852 46 5ms 11 Sep 2025 770th GrayJoKing 🇦🇺 852 50 8ms 3 Feb 2025 771st GrayJoKing 🇦🇺 851 38 91ms 6 Sep 2022 771st Steffan153 🇫🇮 851 38 4ms 5 Aug 2024 773rd vhoulbreque 🇫🇷 851 47 17ms 13 Sep 2022 773rd dzshn 851 47 17ms 20 Sep 2022 773rd Andriamanitra 🇫🇮 851 47 17ms 22 Sep 2022 773rd destofr 851 47 16ms 10 Oct 2022 773rd FlorianCassayre 🇫🇷 851 47 18ms 20 Oct 2022 773rd Ripick 851 47 17ms 1 Feb 2023 773rd quimey 851 47 16ms 22 Mar 2023 773rd RuyiLi 851 47 16ms 1 Apr 2023 773rd rollershutter 851 47 17ms 24 Jun 2023 773rd kmaork 🇮🇱 851 47 16ms 30 Jun 2023 773rd celiendonze 🇨🇭 851 47 16ms 4 Jul 2023 773rd yourlefthandman 851 47 16ms 15 Aug 2023 773rd cros107 🇦🇺 851 47 17ms 26 Oct 2023 773rd MichalMarsalek 🇨🇿 851 47 16ms 8 Nov 2023 773rd boboquack 851 47 16ms 18 Nov 2023 773rd Dataen 851 47 16ms 12 Jan 2024 773rd jhu04 851 47 17ms 18 Jan 2024 773rd NickTheEASDude 🇺🇸 851 47 16ms 1 Feb 2024 773rd jatloe 851 47 16ms 24 Aug 2024 773rd jamesthekee 851 47 16ms 27 Jan 2025 773rd IsaacAlexBarden 851 47 16ms 6 Feb 2025 773rd Languag3 851 47 16ms 6 Mar 2025 773rd souta-1326 851 47 16ms 23 Mar 2025 773rd Inventor51 851 47 16ms 21 May 2025 773rd jipsong 🇩🇪 851 47 17ms 24 May 2025 773rd dirckvdende 851 47 17ms 5 Jul 2025 773rd H3XDaemon 851 47 16ms 19 Aug 2025 773rd wobblybits 851 47 17ms 29 Aug 2025 First Prev 721–800 of 2,756 Next Last