The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Niven Numbers (Long) in Python 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 319th bthalheim 758 66 16ms 23 Aug 2022 319th SaswatPadhi 758 66 17ms 5 Sep 2022 319th eshilo-draper 758 66 16ms 8 Oct 2022 319th dillon-duncando 758 66 16ms 9 Oct 2022 319th AodhanDalton 758 66 16ms 24 Oct 2022 319th myleopard 758 66 16ms 22 Dec 2022 319th Pimveha 758 66 17ms 12 Jan 2023 319th VictorStenvers 🇳🇱 758 66 16ms 25 Apr 2024 319th 77Tigers 758 66 16ms 13 Jun 2024 319th Ythaenagor 758 66 16ms 5 Aug 2024 319th Deedogg 758 66 17ms 9 Sep 2024 319th jamesthekee 758 66 16ms 28 Jan 2025 319th kistlerf 🇨🇭 758 66 25ms 30 May 2025 319th SectorCorruptor 758 66 17ms 21 Sep 2025 335th ramsay 746 67 18ms 9 Aug 2022 335th n0Oo0Oo0b 746 67 27ms 29 Dec 2022 335th felixcroc 746 67 16ms 1 Apr 2023 335th celiendonze 🇨🇭 746 67 16ms 20 Apr 2023 335th azure-blondon 746 67 23ms 11 May 2024 340th init-jay 735 68 260ms 11 Aug 2022 340th suhasdara 735 68 17ms 16 Aug 2022 340th martinnorling 🇸🇪 735 68 17ms 16 Aug 2022 340th TimLeffke 735 68 16ms 18 Aug 2022 340th tails618 735 68 16ms 2 Dec 2022 340th Yareeeema 735 68 17ms 6 Jan 2023 340th Skwerl23 735 68 16ms 6 Feb 2023 340th CatsAreFluffy 735 68 17ms 18 Feb 2023 340th kyleclaassen 735 68 16ms 28 May 2023 340th Azearia 735 68 17ms 13 Aug 2023 340th jmjaggi1202 735 68 16ms 13 Dec 2023 340th amollberg 🇸🇪 735 68 17ms 9 Jan 2024 340th Ralac07 🇦🇺 735 68 19ms 12 Jun 2024 340th JesseNoEyes 🇺🇸 735 68 17ms 12 Oct 2024 340th 6t41m0ct5 735 68 16ms 14 Apr 2025 340th 40fied4t 735 68 16ms 15 May 2025 340th frankgraziano 735 68 16ms 16 Jul 2025 340th Upload-and-View 🇺🇦 735 68 18ms 26 Aug 2025 358th Braffolk 725 69 20ms 15 Aug 2022 358th eddvrs 725 69 16ms 19 Aug 2022 358th mdnestor 725 69 16ms 27 Dec 2022 358th UriyaBA 725 69 17ms 20 Mar 2023 358th A-Dummo 725 69 18ms 28 May 2023 358th Fanrco 725 69 17ms 31 Aug 2023 358th epic-programmer-guy 725 69 20ms 20 Dec 2023 358th ComputerKWasTaken 🇺🇸 725 69 22ms 1 Jun 2024 358th julian-hoelz 725 69 17ms 15 Sep 2024 358th codewrite 🇬🇧 725 69 16ms 24 May 2025 358th Yash-Sangtani 725 69 16ms 5 Oct 2025 358th TJK-S 725 69 17ms 22 Oct 2025 370th twocatsinatrenchcoat 714 70 16ms 8 Aug 2022 370th aidan242 714 70 16ms 22 Aug 2022 370th Darkseid-SUP 714 70 16ms 15 Jan 2023 370th MWI-polygolf 714 70 13ms 6 Dec 2023 370th SURAJMITTAL 714 70 20ms 19 Dec 2024 370th SOONwasTaken 714 70 16ms 19 Mar 2025 376th julienlamoureux78 704 71 16ms 10 Aug 2022 376th MisterrLuck 704 71 16ms 8 Sep 2023 376th Mr-McChicken 704 71 16ms 18 Oct 2023 376th Nightmarius 704 71 19ms 19 Jan 2024 376th DGipe 704 71 16ms 13 May 2024 376th therealnumbers 704 71 16ms 4 Jun 2024 382nd Bananapants22 694 72 16ms 10 Aug 2022 382nd Ted-Barrett 🇦🇺 694 72 16ms 21 Aug 2022 382nd nmgetahun 694 72 16ms 5 Dec 2022 382nd mbittner20 694 72 16ms 27 May 2023 382nd sciencejiho 694 72 15ms 4 May 2024 382nd IoLimmer 694 72 16ms 25 Jul 2024 382nd Unknownuserfrommars 694 72 14ms 21 Nov 2024 382nd Quirkly-Quasar1 🇺🇸 694 72 14ms 8 Dec 2024 382nd WillowWispy 694 72 16ms 15 Mar 2025 382nd cthierfelder 🇲🇨 694 72 16ms 3 Sep 2025 392nd austinrwarner 685 73 14ms 12 Aug 2022 392nd jiaminglimjm 🇲🇾 685 73 17ms 25 Mar 2023 392nd kkoenig 685 73 18ms 8 Jan 2024 392nd j3mak 685 73 16ms 17 Jan 2024 392nd ariesmarinus 685 73 17ms 3 Dec 2024 392nd clayboll99 685 73 16ms 9 Jul 2025 398th vuxlee584 🇻🇳 676 74 14ms 15 Aug 2022 398th destofr 676 74 16ms 23 Aug 2022 398th Techdude01 676 74 23ms 18 Jan 2023 First Prev 321–400 of 470 Next Last