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 236th bitsandbeyond 🇳🇱 947 29 261ms 14 Aug 2024 236th juliansiebert 🇩🇪 947 29 238ms 2 Feb 2025 236th sean-niemann 🇺🇸 947 29 254ms 25 Mar 2025 236th IISResetMe 947 29 214ms 3 Jun 2025 245th primo-ppcg 🇹🇭 943 28 3ms 9 Sep 2022 245th Lydxn 🇨🇦 943 28 3ms 17 Jun 2023 247th Lydxn 🇨🇦 941 30 987ms 6 Sep 2022 247th JayXon 🇺🇸 941 30 1,171ms 6 Sep 2022 247th GrayJoKing 🇦🇺 941 30 950ms 6 Sep 2022 247th sisyphus-ppcg 🇦🇺 941 30 969ms 7 Sep 2022 247th Steffan153 🇫🇮 941 30 1,039ms 17 Feb 2023 247th stefangimmillaro 941 30 1,054ms 12 Jun 2023 247th btnlq 941 30 979ms 5 Aug 2023 247th sean-niemann 🇺🇸 941 30 882ms 24 Mar 2024 247th emgordon154 941 30 952ms 18 Nov 2024 247th pardouin 🇫🇷 941 30 982ms 11 Apr 2025 247th fuzzylojik-golf 🇺🇸 941 30 872ms 13 Sep 2025 258th stefangimmillaro 937 57 356ms 12 Jun 2023 258th JayXon 🇺🇸 937 57 364ms 13 Jun 2023 258th Lydxn 🇨🇦 937 57 351ms 15 Jun 2023 258th sean-niemann 🇺🇸 937 57 350ms 17 Jun 2023 258th Steffan153 🇫🇮 937 57 352ms 13 Mar 2024 258th namelessiw 937 57 359ms 27 Jul 2024 258th fuzzylojik-golf 🇺🇸 937 57 369ms 20 Aug 2025 258th AdrienHache 🇫🇷 937 57 346ms 15 Sep 2025 266th primo-ppcg 🇹🇭 935 40 9ms 9 Sep 2022 266th orthoplex 🇨🇽 935 40 9ms 4 Oct 2023 266th ovs-code 🇩🇪 935 40 363ms 15 Jan 2024 266th DialFrost 🇸🇬 935 40 339ms 15 Jan 2024 266th sean-niemann 🇺🇸 935 40 347ms 15 Jan 2024 266th rucin93 🇵🇱 935 40 342ms 15 Jan 2024 266th kg583 🇺🇸 935 40 346ms 15 Jan 2024 266th Lydxn 🇨🇦 935 40 387ms 15 Jan 2024 266th Steffan153 🇫🇮 935 40 387ms 16 Jan 2024 266th JayXon 🇺🇸 935 40 368ms 16 Jan 2024 266th sisyphus-ppcg 🇦🇺 935 40 343ms 17 Jan 2024 266th m-tkach 🇺🇦 935 40 376ms 20 Jan 2024 266th xsot 🇸🇬 935 40 338ms 25 Jan 2024 266th Yewzir 🇧🇪 935 40 341ms 4 Feb 2024 266th lynn 935 40 357ms 17 Feb 2024 266th pardouin 🇫🇷 935 40 361ms 21 Jun 2024 266th pardouin 🇫🇷 935 40 9ms 23 Aug 2024 266th b-illy 🇬🇧 935 40 361ms 7 Sep 2024 266th fuzzylojik-golf 🇺🇸 935 40 326ms 30 May 2025 266th CornerMercury 🇬🇧 935 40 338ms 12 Oct 2025 266th Babafaba 935 40 360ms 26 Nov 2025 266th CaedenHarper 🇨🇦 935 40 337ms 22 days ago 288th JayXon 🇺🇸 934 35 389ms 6 Sep 2022 288th Lydxn 🇨🇦 934 35 402ms 7 Sep 2022 288th antimon2 🇯🇵 934 35 401ms 11 Jul 2024 291st JayXon 🇺🇸 934 70 66ms 6 Sep 2022 291st Lydxn 🇨🇦 934 70 58ms 6 Sep 2022 291st nwellnhof 🇩🇪 934 70 57ms 11 Sep 2022 291st Steffan153 🇫🇮 934 70 58ms 6 Mar 2023 291st sean-niemann 🇺🇸 934 70 61ms 14 Apr 2024 291st ovs-code 🇩🇪 934 70 63ms 27 Apr 2024 291st Herbert00709 🇵🇱 934 70 55ms 12 Jul 2024 291st MostParsingVex 934 70 58ms 26 Aug 2024 291st fuzzylojik-golf 🇺🇸 934 70 56ms 20 Aug 2025 291st KasperKivimaeki 🇫🇮 934 70 62ms 25 Aug 2025 291st 09cf 934 70 57ms 25 Nov 2025 302nd primo-ppcg 🇹🇭 933 42 4ms 9 Sep 2022 302nd Lydxn 🇨🇦 933 42 5ms 17 Jun 2023 304th Lydxn 🇨🇦 931 51 2ms 6 Sep 2022 304th JayXon 🇺🇸 931 51 2ms 6 Sep 2022 304th nwellnhof 🇩🇪 931 51 2ms 11 Sep 2022 304th emplv 🇱🇻 931 51 2ms 20 Dec 2022 304th Steffan153 🇫🇮 931 51 2ms 6 Mar 2023 304th ovs-code 🇩🇪 931 51 2ms 25 Aug 2023 304th GrayJoKing 🇦🇺 931 51 2ms 17 Oct 2023 304th JohandeRuiter 🇳🇱 931 51 2ms 25 Nov 2023 304th KasperKivimaeki 🇫🇮 931 51 2ms 3 Feb 2024 304th Herbert00709 🇵🇱 931 51 2ms 14 Apr 2024 304th sean-niemann 🇺🇸 931 51 2ms 14 Apr 2024 304th MostParsingVex 931 51 2ms 26 Aug 2024 304th tigerdan2 🇩🇪 931 51 2ms 7 Jan 2025 304th Schoko3001 931 51 2ms 7 Jan 2025 304th fuzzylojik-golf 🇺🇸 931 51 2ms 20 Aug 2025 304th 09cf 931 51 2ms 25 Nov 2025 320th JayXon 🇺🇸 931 61 120ms 7 Sep 2022 First Prev 241–320 of 2,752 Next Last