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 561st m-tkach 🇺🇦 904 65 24ms 6 Sep 2022 561st Lydxn 🇨🇦 904 65 25ms 6 Sep 2022 561st JayXon 🇺🇸 904 65 25ms 6 Sep 2022 561st primo-ppcg 🇹🇭 904 65 24ms 9 Sep 2022 561st MeWhenI 🇻🇦 904 65 25ms 9 Sep 2022 561st fuzzylojik-golf 🇺🇸 904 65 25ms 25 Aug 2025 567th emplv 🇱🇻 904 83 273ms 7 Sep 2022 567th nwellnhof 🇩🇪 904 83 265ms 11 Sep 2022 567th MeWhenI 🇻🇦 904 83 272ms 9 Feb 2023 567th Yewzir 🇧🇪 904 83 259ms 25 Oct 2023 567th kkoenig 904 83 268ms 2 Jan 2024 567th KasperKivimaeki 🇫🇮 904 83 262ms 29 Sep 2025 573rd GrayJoKing 🇦🇺 903 68 445ms 6 Sep 2022 573rd JayXon 🇺🇸 903 68 376ms 6 Sep 2022 573rd Lydxn 🇨🇦 903 68 419ms 12 Oct 2022 573rd sean-niemann 🇺🇸 903 68 440ms 17 Jun 2023 573rd Steffan153 🇫🇮 903 68 434ms 20 Jul 2024 573rd fuzzylojik-golf 🇺🇸 903 68 455ms 20 Aug 2025 579th Lydxn 🇨🇦 902 63 121ms 12 Aug 2023 580th Steffan153 🇫🇮 901 54 4ms 19 Apr 2023 580th primo-ppcg 🇹🇭 901 54 5ms 26 Apr 2023 580th Lydxn 🇨🇦 901 54 4ms 21 Jul 2023 580th sean-niemann 🇺🇸 901 54 4ms 21 Apr 2025 584th emgordon154 901 64 414ms 25 Sep 2025 584th GolfingSuccess 🇬🇷 901 64 444ms 25 Sep 2025 584th nwellnhof 🇩🇪 901 64 431ms 25 Sep 2025 584th MeWhenI 🇻🇦 901 64 411ms 7 Nov 2025 588th JayXon 🇺🇸 900 56 1,288ms 9 Sep 2022 589th Lydxn 🇨🇦 899 40 71ms 14 Sep 2023 589th chunes3 🇺🇸 899 40 67ms 14 Sep 2023 589th Steffan153 🇫🇮 899 40 69ms 15 Sep 2023 589th gifti258 899 40 67ms 15 Sep 2023 589th GolfingSuccess 🇬🇷 899 40 67ms 18 Sep 2023 589th Yewzir 🇧🇪 899 40 72ms 8 Mar 2024 595th btnlq 899 43 2ms 15 Nov 2022 595th Lydxn 🇨🇦 899 43 4ms 28 Feb 2023 597th MeWhenI 🇻🇦 896 48 78ms 6 Sep 2022 597th GrayJoKing 🇦🇺 896 48 86ms 7 Sep 2022 597th steffan-polygolf 896 48 78ms 23 Feb 2023 597th DialFrost 🇸🇬 896 48 78ms 27 Sep 2023 597th Yewzir 🇧🇪 896 48 77ms 17 Nov 2023 597th MWI-polygolf 896 48 78ms 6 Dec 2023 603rd Yewzir 🇧🇪 896 50 7ms 11 Dec 2023 604th rucin93 🇵🇱 896 73 65ms 21 Jun 2023 605th AdrienHache 🇫🇷 895 53 287ms 44 hours ago 606th GrayJoKing 🇦🇺 894 51 6ms 16 Jul 2023 606th Lydxn 🇨🇦 894 51 6ms 16 Jul 2023 608th Lydxn 🇨🇦 894 61 70ms 5 Apr 2023 609th Lydxn 🇨🇦 894 71 26ms 13 Jan 2023 610th GrayJoKing 🇦🇺 893 84 271ms 6 Sep 2022 610th m-tkach 🇺🇦 893 84 270ms 14 Jun 2023 610th DialFrost 🇸🇬 893 84 264ms 26 Sep 2023 610th pardouin 🇫🇷 893 84 258ms 23 Aug 2024 610th edsrzf 🇳🇿 893 84 265ms 25 Jun 2025 615th GrayJoKing 🇦🇺 891 44 4ms 7 Sep 2022 615th emplv 🇱🇻 891 44 6ms 20 Sep 2022 617th btnlq 891 47 3,148ms 25 Oct 2024 617th aditsu 891 47 3,354ms 31 Aug 2025 619th GrayJoKing 🇦🇺 891 49 2ms 10 Sep 2022 619th Steffan153 🇫🇮 891 49 2ms 19 Aug 2024 621st xsot 🇸🇬 890 40 481ms 30 Jan 2024 622nd Lydxn 🇨🇦 890 42 2ms 15 Jan 2024 622nd Shanethegamer 🇺🇸 890 42 323ms 16 Jan 2024 622nd Steffan153 🇫🇮 890 42 2ms 16 Jan 2024 622nd msbranicky 890 42 333ms 17 Jan 2024 622nd dokutan 890 42 353ms 16 Mar 2024 622nd HumanoidCPU 890 42 320ms 4 May 2024 622nd Jacob385 890 42 335ms 22 Jul 2024 622nd JunkIce 890 42 328ms 3 Dec 2024 630th MeWhenI 🇻🇦 890 69 454ms 6 Sep 2022 630th janbehrens 🇩🇪 890 69 428ms 7 Sep 2022 630th DialFrost 🇸🇬 890 69 435ms 26 Oct 2023 630th Yewzir 🇧🇪 890 69 430ms 2 Nov 2023 630th pardouin 🇫🇷 890 69 426ms 23 Aug 2024 630th snoozingnewt 🇨🇦 890 69 366ms 15 days ago 636th MeWhenI 🇻🇦 889 45 102ms 6 Sep 2022 636th Yewzir 🇧🇪 889 45 101ms 14 Oct 2023 636th DialFrost 🇸🇬 889 45 95ms 24 Aug 2024 636th alemelis 889 45 10ms 13 Sep 2024 636th csharpython 889 45 10ms 10 Aug 2025 First Prev 561–640 of 2,752 Next Last