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 721st Steffan153 🇫🇮 869 58 1,287ms 3 Jan 2023 721st MeWhenI 🇻🇦 869 58 1,276ms 7 Jun 2023 721st fuzzylojik-golf 🇺🇸 869 58 1,276ms 2 Sep 2025 724th steffan-polygolf 868 49 2ms 23 Feb 2023 724th MWI-polygolf 868 49 2ms 29 Dec 2023 726th emgordon154 865 71 435ms 25 May 2025 727th dokutan 864 40 674ms 30 Aug 2025 727th CaedenHarper 🇨🇦 864 40 685ms 9 Sep 2025 727th albanian-laundromat 864 40 662ms 12 Sep 2025 727th pardouin 🇫🇷 864 40 675ms 25 days ago 731st primo-ppcg 🇹🇭 863 55 2ms 9 Sep 2022 731st stefangimmillaro 863 55 2ms 12 Jun 2023 731st retrohun 863 55 2ms 29 Mar 2024 734th 0xjac 🇨🇭 863 87 269ms 17 Jun 2025 734th CaedenHarper 🇨🇦 863 87 257ms 5 Oct 2025 736th jared-hughes 863 123 11ms 18 Dec 2024 737th blaztoma 🇱🇹 862 80 103ms 25 days ago 737th DialFrost 🇸🇬 862 80 99ms 24 days ago 737th snoozingnewt 🇨🇦 862 80 93ms 12 days ago 740th emgordon154 862 126 463ms 20 Mar 2025 740th MeWhenI 🇻🇦 862 126 486ms 28 Mar 2025 742nd ovs-code 🇩🇪 861 52 8ms 10 Dec 2023 742nd MeWhenI 🇻🇦 861 52 8ms 12 Dec 2023 742nd Kaffeleif 861 52 9ms 28 Jan 2024 742nd steffan-polygolf 861 52 7ms 8 Mar 2024 742nd Maximizer02 861 52 8ms 30 Jul 2024 742nd emgordon154 861 52 8ms 10 Dec 2024 742nd Babafaba 861 52 8ms 14 Oct 2025 749th btnlq 861 58 122ms 15 Oct 2023 750th biocommando 🇫🇮 861 62 371ms 19 Aug 2023 751st MeWhenI 🇻🇦 861 66 117ms 6 Sep 2022 751st wuzekai518 861 66 121ms 18 Jun 2024 753rd DialFrost 🇸🇬 859 156 12ms 13 Aug 2025 754th MeWhenI 🇻🇦 857 55 36ms 9 Sep 2022 754th Steffan153 🇫🇮 857 55 37ms 22 Oct 2022 754th sean-niemann 🇺🇸 857 55 40ms 21 Apr 2023 754th Yewzir 🇧🇪 857 55 36ms 14 Oct 2023 754th pardouin 🇫🇷 857 55 36ms 5 Oct 2024 754th fuzzylojik-golf 🇺🇸 857 55 35ms 6 Sep 2025 754th DialFrost 🇸🇬 857 55 39ms 11 days ago 761st MeWhenI 🇻🇦 856 33 1,032ms 13 Nov 2022 762nd Natanaelel 🇸🇪 856 42 71ms 26 Sep 2023 762nd dokutan 856 42 65ms 13 Sep 2024 764th ovs-code 🇩🇪 856 124 11ms 9 Jul 2024 765th GrayJoKing 🇦🇺 854 59 1,273ms 6 Sep 2022 766th sean-niemann 🇺🇸 852 31 2ms 14 May 2025 767th janbehrens 🇩🇪 852 46 5ms 7 Sep 2022 767th stefangimmillaro 852 46 4ms 29 Oct 2022 767th DialFrost 🇸🇬 852 46 5ms 20 Sep 2023 767th fuzzylojik-golf 🇺🇸 852 46 5ms 11 Sep 2025 771st GrayJoKing 🇦🇺 852 50 8ms 3 Feb 2025 772nd GrayJoKing 🇦🇺 851 38 71ms 6 Sep 2022 772nd Steffan153 🇫🇮 851 38 4ms 5 Aug 2024 774th vhoulbreque 🇫🇷 851 47 17ms 13 Sep 2022 774th dzshn 851 47 17ms 20 Sep 2022 774th Andriamanitra 🇫🇮 851 47 17ms 22 Sep 2022 774th destofr 851 47 16ms 10 Oct 2022 774th FlorianCassayre 🇫🇷 851 47 18ms 20 Oct 2022 774th Ripick 851 47 17ms 1 Feb 2023 774th quimey 851 47 16ms 22 Mar 2023 774th RuyiLi 851 47 16ms 1 Apr 2023 774th rollershutter 851 47 17ms 24 Jun 2023 774th kmaork 🇮🇱 851 47 16ms 30 Jun 2023 774th celiendonze 🇨🇭 851 47 16ms 4 Jul 2023 774th yourlefthandman 851 47 16ms 15 Aug 2023 774th cros107 🇦🇺 851 47 17ms 26 Oct 2023 774th MichalMarsalek 🇨🇿 851 47 16ms 8 Nov 2023 774th boboquack 851 47 16ms 18 Nov 2023 774th Dataen 851 47 16ms 12 Jan 2024 774th jhu04 851 47 17ms 18 Jan 2024 774th NickTheEASDude 🇺🇸 851 47 16ms 1 Feb 2024 774th jatloe 851 47 16ms 24 Aug 2024 774th jamesthekee 851 47 16ms 27 Jan 2025 774th IsaacAlexBarden 851 47 16ms 6 Feb 2025 774th Languag3 851 47 16ms 6 Mar 2025 774th souta-1326 851 47 16ms 23 Mar 2025 774th Inventor51 851 47 16ms 21 May 2025 774th jipsong 🇩🇪 851 47 17ms 24 May 2025 774th dirckvdende 851 47 17ms 5 Jul 2025 774th H3XDaemon 851 47 16ms 19 Aug 2025 First Prev 721–800 of 2,752 Next Last