The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Emirp Numbers in Lua 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 1st Lydxn 🇨🇦 1,000 72 2ms 10 Apr 2022 1st JayXon 🇺🇸 1,000 72 2ms 10 Feb 2023 1st GrayJoKing 🇦🇺 1,000 72 2ms 21 Feb 2023 4th Steffan153 🇫🇮 986 73 2ms 25 Feb 2023 5th primo-ppcg 🇹🇭 973 74 2ms 20 Oct 2020 5th Waffle3z 973 74 2ms 28 Oct 2020 5th sean-niemann 🇺🇸 973 74 2ms 16 hours ago 8th FlyingPenguin223 923 78 2ms 27 Oct 2024 9th DaDerpDuck 911 79 2ms 22 Jan 2021 10th GalladeGuy 🇺🇸 878 82 2ms 21 May 2020 11th GoateSo 867 83 2ms 14 Aug 2023 12th jared-hughes 809 89 2ms 5 Jul 2024 13th MeWhenI 🇻🇦 758 95 2ms 20 Feb 2023 14th dokutan 720 100 1ms 11 Apr 2024 15th Shanethegamer 🇺🇸 581 124 2ms 13 Oct 2024 16th NickTheEASDude 🇺🇸 571 126 8ms 10 Sep 2024 17th icy-lava 567 127 3ms 11 Aug 2023 18th cafehaine 🇫🇷 537 134 8ms 4 Sep 2018 19th kartik-s 522 138 7ms 3 Nov 2018 20th frosster 507 142 9ms 12 Mar 2025 21st DaCoolOne 500 144 1ms 24 Nov 2019 21st JRaspass 🇬🇧 500 144 1ms 25 Dec 2020 21st HumanoidCPU 500 144 1ms 4 Mar 2025 21st CaedenHarper 🇨🇦 500 144 1ms 13 Aug 2025 25th anarconic 493 146 1ms 8 Dec 2023 25th Mabeloid 🇳🇴 493 146 1ms 20 Sep 2024 27th aadenboy 🇺🇸 480 150 3ms 19 hours ago 28th Visckmart 474 152 3ms 25 Jul 2018 29th mtirado1 471 153 2ms 11 Apr 2023 30th DummySphere 462 156 2ms 3 Feb 2018 31st josgilmo 456 158 2ms 16 Apr 2019 32nd lionbryce 453 159 45ms 18 Aug 2024 33rd msbranicky 434 166 1ms 12 Oct 2023 34th aDwarfNamedUrist 421 171 7ms 9 Dec 2022 35th retrohun 407 177 1ms 21 Dec 2018 36th KatieLG 🇬🇧 402 179 1ms 2 Dec 2020 36th mokymok 🇺🇸 402 179 1ms 8 Nov 2021 36th SpareManiKatti 402 179 1ms 19 Apr 2022 36th KatieLG-Transpiler 🇬🇧 402 179 1ms 23 Jun 2022 40th aphrim 🇺🇸 393 183 2ms 19 May 2021 41st StronkCheese 🇺🇸 360 200 2ms 2 Aug 2023 42nd JesseNoEyes 🇺🇸 343 210 4ms 12 Nov 2024 43rd snoozingnewt 🇨🇦 332 217 2ms 26 Sep 2025 44th kevinnaviapaiva 244 295 2ms 29 Jul 2025 45th koweret 216 333 25ms 8 Nov 2024 46th jaredcrystal 🇺🇸 186 387 1ms 29 Oct 2019 47th yhm138 73 992 2ms 16 Feb 2025 1–47 of 47
