The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Pernicious Numbers (Long) in Python 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 241st Bit125 505 103 23ms 28 Mar 2024 241st Terobero 505 103 1,027ms 26 Aug 2024 241st addmai 505 103 34ms 25 Jul 2025 241st arjunarya1 505 103 21ms 12 Sep 2025 245th myleopard 500 104 23ms 22 Dec 2022 245th VV1Git 500 104 36ms 30 Mar 2023 245th jmmographer 500 104 31ms 21 Oct 2023 248th jameswmccarty 495 105 28ms 7 Mar 2025 249th S-Ruban 491 106 16ms 25 Feb 2023 250th Supermac30 477 109 30ms 29 Dec 2022 250th madex 🇩🇪 477 109 38ms 23 May 2024 252nd tknight00 473 110 34ms 2 Apr 2024 253rd cingulataluke 468 111 17ms 29 Aug 2023 253rd yuchuehw 468 111 32ms 13 Feb 2024 255th clayboll99 464 112 32ms 14 Jul 2025 256th Andre3582 460 113 27ms 5 Oct 2025 257th ssbhatt4321 456 114 211ms 11 Jun 2023 257th amollberg 🇸🇪 456 114 24ms 10 Jan 2024 257th bwenstar 456 114 27ms 21 Feb 2024 257th 0dyse 456 114 32ms 23 Apr 2025 261st qwjhvbxi 448 116 29ms 7 Feb 2024 262nd SURAJMITTAL 437 119 29ms 20 Dec 2024 262nd CodyKlingler 437 119 20ms 7 Feb 2025 264th DGipe 433 120 28ms 2 Jul 2024 265th ComputerKWasTaken 🇺🇸 430 121 28ms 1 Jun 2024 266th azure-blondon 423 123 33ms 14 Dec 2023 267th nmgetahun 416 125 31ms 9 Dec 2022 267th GolfGPT 416 125 19ms 19 Nov 2023 269th EnisEfe0 403 129 30ms 18 May 2025 270th itljan30 394 132 21ms 6 Jun 2024 271st kurkale6ka 374 139 29ms 2 Jan 2024 271st dylanjones92 374 139 23ms 25 Jan 2024 273rd TheAtrossian 369 141 17ms 17 days ago 274th zt14427 361 144 21ms 2 May 2023 274th davidtiemstra 361 144 40ms 12 Jul 2023 276th alfonsoalves 356 146 18ms 27 Feb 2024 277th atazzam 🇺🇸 349 149 1,196ms 12 Feb 2023 278th Demonarchet 340 153 32ms 8 Nov 2023 279th eddvrs 338 154 37ms 29 Dec 2022 280th kevinnaviapaiva 325 160 17ms 5 Mar 2025 281st CyberTapir 313 166 21ms 3 Sep 2024 282nd DrPrettyman 302 172 30ms 18 Jul 2023 283rd zwxzwxzwx21 299 174 2,265ms 6 Nov 2023 284th UriyaBA 297 175 29ms 20 Mar 2023 285th Unknownuserfrommars 264 197 18ms 21 Nov 2024 286th Krtecik 240 217 30ms 9 Feb 2024 287th Bobracha 236 220 20ms 28 Dec 2024 288th juliantamayo-py 191 272 45ms 20 Oct 2024 289th Upload-and-View 🇺🇦 189 275 21ms 11 Aug 2025 290th AidanWalter 106 491 23ms 3 Jan 2025 291st Zhenyu-Bo 81 644 18ms 1 Aug 2025 292nd KatieLG-Transpiler 🇬🇧 2 24,925 19ms 21 Nov 2022 First Prev 241–292 of 292
