The Calendar hole will go live in approximately 4 days. Why not try and solve it ahead of time?
Emirp Numbers in Lua in chars. 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 Chars Time Submitted 1st primo-ppcg 🇹🇭 1,000 69 1ms 15 Feb 2020 1st Lydxn 🇨🇦 1,000 69 2ms 23 Mar 2022 3rd JayXon 🇺🇸 972 71 2ms 11 Feb 2023 4th GrayJoKing 🇦🇺 958 72 2ms 21 Feb 2023 5th Waffle3z 932 74 2ms 28 Oct 2020 5th dokutan 932 74 2ms 11 Apr 2024 5th sean-niemann 🇺🇸 932 74 2ms 4 days ago 8th FlyingPenguin223 920 75 2ms 18 Mar 2025 9th DaDerpDuck 873 79 2ms 22 Jan 2021 10th GalladeGuy 🇺🇸 841 82 2ms 21 May 2020 11th GoateSo 831 83 2ms 14 Aug 2023 12th jared-hughes 775 89 2ms 5 Jul 2024 13th MeWhenI 🇻🇦 726 95 4ms 20 Feb 2023 14th Shanethegamer 🇺🇸 556 124 3ms 13 Oct 2024 15th NickTheEASDude 🇺🇸 548 126 10ms 10 Sep 2024 16th Mabeloid 🇳🇴 539 128 1ms 20 Sep 2024 17th cafehaine 🇫🇷 515 134 10ms 4 Sep 2018 18th kartik-s 500 138 10ms 3 Nov 2018 19th frosster 486 142 12ms 12 Mar 2025 20th DaCoolOne 479 144 1ms 24 Nov 2019 20th JRaspass 🇬🇧 479 144 2ms 25 Dec 2020 20th HumanoidCPU 479 144 2ms 4 Mar 2025 20th CaedenHarper 🇨🇦 479 144 1ms 13 Aug 2025 24th anarconic 473 146 1ms 8 Dec 2023 25th aadenboy 🇺🇸 463 149 2ms 9 days ago 26th Visckmart 454 152 3ms 25 Jul 2018 27th mtirado1 451 153 2ms 11 Apr 2023 28th DummySphere 442 156 3ms 3 Feb 2018 29th josgilmo 437 158 2ms 16 Apr 2019 30th lionbryce 434 159 48ms 18 Aug 2024 31st msbranicky 416 166 1ms 12 Oct 2023 32nd aDwarfNamedUrist 404 171 8ms 9 Dec 2022 33rd retrohun 390 177 1ms 21 Dec 2018 34th KatieLG 🇬🇧 385 179 1ms 2 Dec 2020 34th mokymok 🇺🇸 385 179 1ms 8 Nov 2021 34th SpareManiKatti 385 179 1ms 19 Apr 2022 34th KatieLG-Transpiler 🇬🇧 385 179 1ms 23 Jun 2022 38th aphrim 🇺🇸 377 183 2ms 19 May 2021 39th StronkCheese 🇺🇸 345 200 2ms 2 Aug 2023 40th JesseNoEyes 🇺🇸 329 210 5ms 12 Nov 2024 41st snoozingnewt 🇨🇦 318 217 2ms 26 Sep 2025 42nd kevinnaviapaiva 234 295 3ms 29 Jul 2025 43rd koweret 207 333 25ms 8 Nov 2024 44th jaredcrystal 🇺🇸 178 387 1ms 29 Oct 2019 45th yhm138 70 992 3ms 16 Feb 2025 1–45 of 45
