The Calendar hole will go live in approximately 5 days. Why not try and solve it ahead of time?
Evil Numbers 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 946th CaedenHarper 🇨🇦 878 110 10ms 24 Jan 2025 946th albanian-laundromat 878 110 10ms 20 Jul 2025 946th GolfingSuccess 🇬🇷 878 110 10ms 15 Aug 2025 946th snoozingnewt 🇨🇦 878 110 9ms 21 days ago 946th JOrE20 🇺🇸 878 110 10ms 95 mins ago 966th j55d 877 41 9ms 29 Sep 2018 966th KatieLG 🇬🇧 877 41 10ms 15 Apr 2021 966th igmcdowell 877 41 8ms 4 Jan 2022 966th MWI-polygolf 877 41 9ms 6 Dec 2023 966th Yax42 🇫🇷 877 41 9ms 5 Sep 2025 971st ovs-code 🇩🇪 876 50 6ms 10 Dec 2023 971st MeWhenI 🇻🇦 876 50 6ms 12 Dec 2023 971st Kaffeleif 876 50 6ms 28 Jan 2024 971st steffan-polygolf 876 50 6ms 8 Mar 2024 971st Maximizer02 876 50 6ms 30 Jul 2024 971st emgordon154 876 50 5ms 10 Dec 2024 971st Babafaba 876 50 7ms 14 Oct 2025 978th DialFrost 🇸🇬 875 111 436ms 12 Jan 2025 978th GolfingSuccess 🇬🇷 875 111 427ms 12 Jan 2025 978th emgordon154 875 111 451ms 12 Jan 2025 978th Shanethegamer 🇺🇸 875 111 476ms 13 Jan 2025 978th dokutan 875 111 489ms 13 Jan 2025 978th KatieLG 🇬🇧 875 111 476ms 13 Jan 2025 978th HumanoidCPU 875 111 477ms 13 Jan 2025 978th ovs-code 🇩🇪 875 111 460ms 24 Jan 2025 978th CaedenHarper 🇨🇦 875 111 472ms 25 Jan 2025 978th MeWhenI 🇻🇦 875 111 465ms 9 Feb 2025 978th pardouin 🇫🇷 875 111 508ms 25 Feb 2025 978th rucin93 🇵🇱 875 111 594ms 12 Mar 2025 978th albanian-laundromat 875 111 482ms 10 Jul 2025 978th snoozingnewt 🇨🇦 875 111 449ms 18 days ago 978th JOrE20 🇺🇸 875 111 391ms 13 days ago 993rd xsot 🇸🇬 874 34 49ms 30 Jan 2024 994th AgathokakologicalBit 873 45 9ms 19 Jul 2019 994th face0xff 873 45 15ms 26 Nov 2021 994th RDShah 873 45 17ms 12 Jun 2022 994th tri1212 🇻🇳 873 45 18ms 21 Jul 2022 994th vhoulbreque 🇫🇷 873 45 15ms 13 Aug 2022 994th Andriamanitra 🇫🇮 873 45 16ms 22 Sep 2022 994th gXLg 🇩🇪 873 45 9ms 22 Oct 2022 994th SniperSmiley 🇺🇸 873 45 10ms 13 Dec 2022 994th b10011 🇫🇮 873 45 8ms 13 Jan 2023 994th Ripick 873 45 16ms 1 Feb 2023 994th SirFireball3521 873 45 9ms 4 Feb 2023 994th quimey 873 45 15ms 22 Mar 2023 994th rollershutter 873 45 15ms 25 Apr 2023 994th celiendonze 🇨🇭 873 45 15ms 4 Jul 2023 994th cros107 🇦🇺 873 45 16ms 14 Aug 2023 994th yourlefthandman 873 45 16ms 15 Aug 2023 994th PatrickStephansen 🇿🇦 873 45 9ms 23 Aug 2023 994th ListeriaM 873 45 9ms 25 Aug 2023 994th dteague3989 873 45 9ms 26 Oct 2023 994th boboquack 873 45 16ms 18 Nov 2023 994th Dataen 873 45 15ms 12 Jan 2024 994th NickTheEASDude 🇺🇸 873 45 15ms 1 Feb 2024 994th LlamaLad7 🇬🇧 873 45 10ms 9 Feb 2024 994th retrohun 873 45 9ms 29 Mar 2024 994th starfihs 873 45 9ms 2 Aug 2024 994th jatloe 873 45 16ms 24 Aug 2024 994th jamiloBBKing 873 45 15ms 27 Jan 2025 994th jamesthekee 873 45 15ms 27 Jan 2025 994th IsaacAlexBarden 873 45 16ms 6 Feb 2025 994th Languag3 873 45 15ms 6 Mar 2025 994th souta-1326 873 45 14ms 23 Mar 2025 994th H3XDaemon 873 45 16ms 19 Aug 2025 994th wobblybits 873 45 15ms 29 Aug 2025 994th EthanJantz 873 45 16ms 29 Aug 2025 994th not-a-pokemon 873 45 15ms 10 Sep 2025 994th mishak-sys 873 45 16ms 10 Sep 2025 994th tommasotode 873 45 16ms 20 Sep 2025 994th Daniel-Ellison 873 45 15ms 2 Oct 2025 994th solisolu 873 45 9ms 25 Nov 2025 994th JOrE20 🇺🇸 873 45 9ms 13 days ago 1,034th prplz 🇦🇺 872 54 2ms 6 Mar 2019 1,034th Attero 🇸🇪 872 54 2ms 28 Apr 2020 1,034th Irratix 🇳🇱 872 54 1ms 9 Oct 2020 1,034th janbehrens 🇩🇪 872 54 1ms 30 Nov 2020 1,034th TomatOid 872 54 1ms 22 Feb 2021 1,034th inventshah 872 54 1ms 8 May 2021 1,034th sisyphus-ppcg 🇦🇺 872 54 1ms 24 Jun 2021 First Prev 961–1,040 of 5,029 Next Last