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 394th Steffan153 🇫🇮 932 28 43ms 17 Feb 2023 394th Shanethegamer 🇺🇸 932 28 43ms 22 Mar 2023 394th xsot 🇸🇬 932 28 37ms 25 May 2023 394th stefangimmillaro 932 28 50ms 4 Aug 2023 394th MeWhenI 🇻🇦 932 28 52ms 4 Aug 2023 394th Natanaelel 🇸🇪 932 28 35ms 14 Mar 2024 394th ovs-code 🇩🇪 932 28 34ms 22 Apr 2024 394th sean-niemann 🇺🇸 932 28 34ms 27 Dec 2024 394th fuzzylojik-golf 🇺🇸 932 28 44ms 29 Aug 2025 410th stefangimmillaro 931 55 367ms 12 Jun 2023 410th DialFrost 🇸🇬 931 55 363ms 16 Jan 2024 410th namelessiw 931 55 342ms 27 Jul 2024 410th fuzzylojik-golf 🇺🇸 931 55 346ms 20 Aug 2025 410th AdrienHache 🇫🇷 931 55 364ms 8 Sep 2025 415th JayXon 🇺🇸 931 80 261ms 7 Feb 2024 415th Steffan153 🇫🇮 931 80 270ms 2 Aug 2024 415th sean-niemann 🇺🇸 931 80 262ms 6 Aug 2024 418th JayXon 🇺🇸 930 39 97ms 15 Feb 2021 418th Lydxn 🇨🇦 930 39 85ms 15 Sep 2021 418th Steffan153 🇫🇮 930 39 99ms 17 Feb 2023 418th Shanethegamer 🇺🇸 930 39 99ms 22 Mar 2023 418th stefangimmillaro 930 39 99ms 4 Aug 2023 418th MeWhenI 🇻🇦 930 39 100ms 4 Aug 2023 418th sean-niemann 🇺🇸 930 39 98ms 6 Aug 2024 418th primo-ppcg 🇹🇭 930 39 100ms 12 Apr 2025 418th fuzzylojik-golf 🇺🇸 930 39 101ms 2 Sep 2025 427th lyphyser 929 32 57ms 8 Nov 2023 427th AdrienHache 🇫🇷 929 32 63ms 1 Apr 2024 429th rucin93 🇵🇱 928 60 444ms 24 Sep 2025 429th DialFrost 🇸🇬 928 60 456ms 26 Sep 2025 429th fuzzylojik-golf 🇺🇸 928 60 366ms 26 Sep 2025 429th namelessiw 928 60 426ms 2 Oct 2025 429th stefangimmillaro 928 60 425ms 6 Oct 2025 429th KasperKivimaeki 🇫🇮 928 60 390ms 16 days ago 435th JayXon 🇺🇸 928 71 76ms 1 Jan 2022 435th Steffan153 🇫🇮 928 71 69ms 2 Aug 2024 435th rucin93 🇵🇱 928 71 74ms 3 Aug 2024 435th sean-niemann 🇺🇸 928 71 82ms 6 Aug 2024 435th KasperKivimaeki 🇫🇮 928 71 79ms 25 Aug 2025 440th edsrzf 🇳🇿 927 57 40ms 30 Dec 2024 440th DialFrost 🇸🇬 927 57 42ms 13 Feb 2025 440th zacjl 927 57 39ms 13 Feb 2025 440th kg583 🇺🇸 927 57 41ms 13 Feb 2025 440th pardouin 🇫🇷 927 57 39ms 25 Apr 2025 445th primo-ppcg 🇹🇭 926 57 120ms 9 Jan 2020 445th sisyphus-ppcg 🇦🇺 926 57 119ms 10 Jun 2021 445th lynn 926 57 119ms 17 Nov 2021 445th Bubbler-4 926 57 117ms 6 Sep 2022 445th xnor-gate 926 57 120ms 21 Oct 2022 445th kgodara 926 57 121ms 6 Mar 2023 445th MeWhenI 🇻🇦 926 57 120ms 5 Aug 2023 445th stefangimmillaro 926 57 125ms 2 Oct 2023 445th fuzzylojik-golf 🇺🇸 926 57 131ms 15 Jul 2025 445th Natanaelel 🇸🇪 926 57 119ms 24 Jul 2025 455th Steffan153 🇫🇮 924 28 3ms 11 Aug 2024 455th btnlq 924 28 3ms 14 Aug 2024 455th ovs-code 🇩🇪 924 28 3ms 29 Oct 2024 455th sean-niemann 🇺🇸 924 28 4ms 11 Jan 2025 459th sisyphus-ppcg 🇦🇺 924 38 118ms 4 Nov 2021 459th JayXon 🇺🇸 924 38 121ms 4 Nov 2021 459th Lydxn 🇨🇦 924 38 118ms 4 Nov 2021 459th primo-ppcg 🇹🇭 924 38 117ms 4 Nov 2021 459th Steffan153 🇫🇮 924 38 122ms 17 Feb 2023 459th steffan-polygolf 924 38 118ms 24 Feb 2023 459th Shanethegamer 🇺🇸 924 38 118ms 22 Mar 2023 459th MeWhenI 🇻🇦 924 38 119ms 4 Aug 2023 459th stefangimmillaro 924 38 121ms 4 Aug 2023 459th sean-niemann 🇺🇸 924 38 130ms 27 Dec 2024 459th fuzzylojik-golf 🇺🇸 924 38 123ms 5 Sep 2025 470th stassats 923 48 5ms 28 Apr 2018 470th primo-ppcg 🇹🇭 923 48 5ms 12 Dec 2018 470th marcin7Cd 923 48 5ms 6 Feb 2021 470th AlephSquirrel 923 48 5ms 22 May 2021 470th Lydxn 🇨🇦 923 48 5ms 11 Oct 2021 470th Shanethegamer 🇺🇸 923 48 5ms 15 Nov 2021 470th JayXon 🇺🇸 923 48 5ms 26 Dec 2021 470th Steffan153 🇫🇮 923 48 5ms 12 Jan 2023 470th sisyphus-ppcg 🇦🇺 923 48 5ms 6 Feb 2023 470th ovs-code 🇩🇪 923 48 5ms 11 Mar 2023 470th syntax-rules 923 48 5ms 15 May 2023 First Prev 401–480 of 5,023 Next Last