The Calendar hole will go live in approximately 13 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 470th MeWhenI 🇻🇦 923 48 5ms 5 Aug 2023 470th varhammer 🇷🇺 923 48 5ms 13 Dec 2023 470th xsot 🇸🇬 923 48 5ms 21 Sep 2024 470th kg583 🇺🇸 923 48 5ms 5 Oct 2024 470th DialFrost 🇸🇬 923 48 5ms 6 Dec 2024 470th edsrzf 🇳🇿 923 48 5ms 6 Dec 2024 470th CLOStrophobic 🇮🇹 923 48 5ms 17 Jan 2025 470th zacjl 923 48 5ms 14 Feb 2025 470th pardouin 🇫🇷 923 48 5ms 21 Mar 2025 470th sean-niemann 🇺🇸 923 48 5ms 17 Apr 2025 470th fuzzylojik-golf 🇺🇸 923 48 5ms 6 Aug 2025 492nd Lydxn 🇨🇦 922 36 2ms 30 Oct 2022 492nd ovs-code 🇩🇪 922 36 70ms 13 Sep 2023 492nd GrayJoKing 🇦🇺 922 36 83ms 14 Sep 2023 492nd Lydxn 🇨🇦 922 36 65ms 14 Sep 2023 492nd primo-ppcg 🇹🇭 922 36 66ms 15 Sep 2023 492nd Steffan153 🇫🇮 922 36 70ms 15 Sep 2023 492nd Kacarott 🇦🇺 922 36 70ms 25 Sep 2023 492nd MeWhenI 🇻🇦 922 36 66ms 2 Nov 2023 492nd Yewzir 🇧🇪 922 36 71ms 7 Mar 2024 492nd error256 922 36 72ms 16 May 2024 492nd pardouin 🇫🇷 922 36 66ms 24 Aug 2024 492nd edsrzf 🇳🇿 922 36 65ms 17 Jan 2025 492nd sean-niemann 🇺🇸 922 36 66ms 7 Apr 2025 492nd DialFrost 🇸🇬 922 36 64ms 7 Apr 2025 492nd Shanethegamer 🇺🇸 922 36 63ms 8 Apr 2025 492nd fuzzylojik-golf 🇺🇸 922 36 61ms 17 Sep 2025 508th p01 922 39 9ms 11 Dec 2017 508th prplz 🇦🇺 922 39 8ms 6 Mar 2019 508th elisherer 🇮🇱 922 39 8ms 28 Mar 2019 508th vladyslavprosolupov 922 39 8ms 28 May 2019 508th ETHproductions 🇺🇸 922 39 8ms 16 Aug 2019 508th Attero 🇸🇪 922 39 8ms 22 May 2020 508th shayded-exe 922 39 9ms 13 Jul 2020 508th Irratix 🇳🇱 922 39 8ms 2 Aug 2020 508th thisishowmymindworks 🇳🇴 922 39 9ms 5 Aug 2020 508th tomtheisen 🇺🇸 922 39 8ms 24 Sep 2020 508th janbehrens 🇩🇪 922 39 8ms 26 Sep 2020 508th jn-lp 🇺🇦 922 39 8ms 31 Oct 2020 508th nwellnhof 🇩🇪 922 39 8ms 5 Nov 2020 508th GrayJoKing 🇦🇺 922 39 8ms 26 Nov 2020 508th nathanadams 🇳🇿 922 39 9ms 11 Apr 2021 508th inventshah 922 39 8ms 20 Apr 2021 508th ScottHamper 922 39 9ms 26 May 2021 508th jakzo 922 39 9ms 10 Sep 2021 508th AlephSquirrel 922 39 9ms 15 Nov 2021 508th Giga-Bowser 922 39 8ms 20 Dec 2021 508th dmrichwa 🇺🇸 922 39 8ms 12 Jul 2022 508th ZakkkkAttackkkk 🇵🇭 922 39 9ms 27 Jul 2022 508th MeWhenI 🇻🇦 922 39 9ms 13 Aug 2022 508th itsh01 922 39 9ms 7 Sep 2022 508th jared-hughes 922 39 9ms 8 Sep 2022 508th stefangimmillaro 922 39 9ms 29 Oct 2022 508th ovs-code 🇩🇪 922 39 8ms 11 Jan 2023 508th tayloia 🇬🇧 922 39 8ms 17 May 2023 508th Yewzir 🇧🇪 922 39 8ms 14 Oct 2023 508th Betuaredead 922 39 9ms 13 Nov 2023 508th voytxt 🇨🇿 922 39 9ms 4 Feb 2024 508th two-bad 🇬🇧 922 39 9ms 5 Feb 2024 508th vlpx 🇫🇮 922 39 9ms 1 Aug 2024 508th pardouin 🇫🇷 922 39 8ms 23 Aug 2024 508th emgordon154 922 39 9ms 16 Nov 2024 508th targrik 922 39 9ms 14 Feb 2025 508th helbling 🇨🇭 922 39 9ms 29 Jun 2025 508th fuzzylojik-golf 🇺🇸 922 39 9ms 6 Aug 2025 546th xnor-gate 922 51 124ms 11 May 2021 546th lynn 922 51 122ms 11 May 2021 546th HPWiz 🇳🇿 922 51 159ms 8 Oct 2021 549th Lydxn 🇨🇦 921 34 71ms 16 Jan 2024 550th HPWiz 🇳🇿 920 35 16ms 6 Oct 2022 551st primo-ppcg 🇹🇭 920 38 39ms 1 May 2020 551st cure-honey 🇯🇵 920 38 38ms 10 May 2020 551st marshallward 🇺🇸 920 38 37ms 10 May 2020 551st Lydxn 🇨🇦 920 38 39ms 14 Jul 2021 551st JayXon 🇺🇸 920 38 39ms 19 Aug 2021 551st sisyphus-ppcg 🇦🇺 920 38 40ms 16 Sep 2021 557th Lydxn 🇨🇦 919 81 258ms 25 Mar 2021 557th stefangimmillaro 919 81 268ms 12 Jun 2023 557th Shanethegamer 🇺🇸 919 81 264ms 7 Feb 2024 557th fuzzylojik-golf 🇺🇸 919 81 275ms 15 Jul 2025 First Prev 481–560 of 5,022 Next Last