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 473rd jared-hughes 912 41 8ms 8 Sep 2022 473rd nwellnhof 🇩🇪 912 41 9ms 11 Sep 2022 473rd stefangimmillaro 912 41 9ms 29 Oct 2022 473rd ovs-code 🇩🇪 912 41 9ms 11 Jan 2023 473rd AlephSquirrel 912 41 9ms 15 Feb 2023 473rd nathanadams 🇳🇿 912 41 9ms 24 Mar 2023 473rd thisishowmymindworks 🇳🇴 912 41 10ms 16 May 2023 473rd tayloia 🇬🇧 912 41 9ms 17 May 2023 473rd Yewzir 🇧🇪 912 41 9ms 14 Oct 2023 473rd commandblockguy 🇺🇸 912 41 356ms 15 Jan 2024 473rd SirBogman 🇺🇸 912 41 359ms 15 Jan 2024 473rd GrayJoKing 🇦🇺 912 41 338ms 15 Jan 2024 473rd GolfingSuccess 🇬🇷 912 41 341ms 15 Jan 2024 473rd KatieLG 🇬🇧 912 41 334ms 16 Jan 2024 473rd neel11235813 912 41 360ms 16 Jan 2024 473rd AlephSquirrel 912 41 336ms 16 Jan 2024 473rd BREMAUCY 🇫🇷 912 41 350ms 25 Jan 2024 473rd m42km 912 41 377ms 4 Feb 2024 473rd voytxt 🇨🇿 912 41 8ms 4 Feb 2024 473rd two-bad 🇬🇧 912 41 8ms 5 Feb 2024 473rd helbling 🇨🇭 912 41 9ms 10 Mar 2024 473rd duckyluuk 🇳🇱 912 41 376ms 27 Mar 2024 473rd MeWhenI 🇻🇦 912 41 359ms 24 May 2024 473rd vlpx 🇫🇮 912 41 9ms 1 Aug 2024 473rd emgordon154 912 41 364ms 16 Nov 2024 473rd emgordon154 912 41 8ms 16 Nov 2024 473rd targrik 912 41 8ms 14 Feb 2025 473rd xsot 🇸🇬 912 41 9ms 31 Jul 2025 473rd fuzzylojik-golf 🇺🇸 912 41 10ms 6 Aug 2025 473rd snoozingnewt 🇨🇦 912 41 342ms 25 Oct 2025 473rd sean-niemann 🇺🇸 912 41 2ms 18 Nov 2025 473rd rucin93 🇵🇱 912 41 2ms 18 Nov 2025 513th sean-niemann 🇺🇸 912 43 6ms 14 Apr 2024 513th Steffan153 🇫🇮 912 43 7ms 26 Jul 2024 513th xsot 🇸🇬 912 43 4ms 29 Jul 2025 516th Shanethegamer 🇺🇸 911 31 918ms 6 Sep 2022 516th SirBogman 🇺🇸 911 31 985ms 7 Sep 2022 516th primo-ppcg 🇹🇭 911 31 1,001ms 9 Sep 2022 516th inventshah 911 31 1,007ms 27 Sep 2023 516th Yewzir 🇧🇪 911 31 1,050ms 7 Feb 2024 516th edsrzf 🇳🇿 911 31 954ms 17 Jan 2025 516th snoozingnewt 🇨🇦 911 31 851ms 15 days ago 523rd emgordon154 911 37 5ms 6 Jun 2025 524th emgordon154 911 46 3,141ms 6 Nov 2024 524th JayXon 🇺🇸 911 46 3,073ms 7 Nov 2024 526th Lydxn 🇨🇦 911 48 145ms 20 Nov 2022 526th JayXon 🇺🇸 911 48 145ms 21 Nov 2022 528th DialFrost 🇸🇬 910 38 669ms 29 Aug 2025 528th sean-niemann 🇺🇸 910 38 661ms 12 Sep 2025 530th JayXon 🇺🇸 909 44 94ms 13 Jun 2023 530th Lydxn 🇨🇦 909 44 93ms 15 Jun 2023 530th sean-niemann 🇺🇸 909 44 103ms 14 Nov 2023 530th Steffan153 🇫🇮 909 44 95ms 13 Mar 2024 530th fuzzylojik-golf 🇺🇸 909 44 92ms 29 Aug 2025 535th JayXon 🇺🇸 909 48 2ms 10 Sep 2022 535th Lydxn 🇨🇦 909 48 2ms 12 Oct 2022 537th HPWiz 🇳🇿 908 38 22ms 6 Oct 2022 538th emgordon154 908 72 63ms 11 days ago 539th Lydxn 🇨🇦 906 52 36ms 1 Mar 2023 540th Waffle3z 904 47 2ms 6 Sep 2022 540th GrayJoKing 🇦🇺 904 47 2ms 7 Sep 2022 540th jared-hughes 904 47 2ms 8 Sep 2022 540th MeWhenI 🇻🇦 904 47 2ms 7 Nov 2022 540th Steffan153 🇫🇮 904 47 2ms 10 Dec 2022 540th btnlq 904 47 2ms 28 Dec 2022 540th sean-niemann 🇺🇸 904 47 2ms 24 Jul 2023 540th FlyingPenguin223 904 47 2ms 23 Oct 2024 540th fuzzylojik-golf 🇺🇸 904 47 2ms 1 Jul 2025 540th synt7x 🇺🇸 904 47 3ms 7 Jul 2025 540th GolfingSuccess 🇬🇷 904 47 2ms 24 Sep 2025 551st ovs-code 🇩🇪 904 57 4ms 26 Sep 2022 551st GrayJoKing 🇦🇺 904 57 3ms 29 Sep 2022 551st MeWhenI 🇻🇦 904 57 3ms 1 Oct 2022 551st Lydxn 🇨🇦 904 57 3ms 29 Jan 2023 551st Steffan153 🇫🇮 904 57 4ms 29 Jan 2023 551st DialFrost 🇸🇬 904 57 4ms 30 Jan 2023 551st sean-niemann 🇺🇸 904 57 4ms 23 Oct 2023 551st xsot 🇸🇬 904 57 4ms 9 Feb 2024 551st Yewzir 🇧🇪 904 57 3ms 29 Mar 2024 551st edsrzf 🇳🇿 904 57 4ms 8 Nov 2025 First Prev 481–560 of 2,752 Next Last
