The Calendar hole will go live in approximately 6 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 320th Sloimayyy 758 66 16ms 21 Aug 2022 320th bthalheim 758 66 16ms 23 Aug 2022 320th SaswatPadhi 758 66 17ms 5 Sep 2022 320th eshilo-draper 758 66 16ms 8 Oct 2022 320th dillon-duncando 758 66 16ms 9 Oct 2022 320th AodhanDalton 758 66 16ms 24 Oct 2022 320th myleopard 758 66 16ms 22 Dec 2022 320th Pimveha 758 66 17ms 12 Jan 2023 320th VictorStenvers 🇳🇱 758 66 16ms 25 Apr 2024 320th 77Tigers 758 66 16ms 13 Jun 2024 320th Ythaenagor 758 66 16ms 5 Aug 2024 320th Deedogg 758 66 17ms 9 Sep 2024 320th jamesthekee 758 66 16ms 28 Jan 2025 320th kistlerf 🇨🇭 758 66 25ms 30 May 2025 320th SectorCorruptor 758 66 17ms 21 Sep 2025 336th ramsay 746 67 18ms 9 Aug 2022 336th n0Oo0Oo0b 746 67 27ms 29 Dec 2022 336th felixcroc 746 67 16ms 1 Apr 2023 336th celiendonze 🇨🇭 746 67 16ms 20 Apr 2023 336th azure-blondon 746 67 23ms 11 May 2024 341st init-jay 735 68 260ms 11 Aug 2022 341st suhasdara 735 68 17ms 16 Aug 2022 341st martinnorling 🇸🇪 735 68 17ms 16 Aug 2022 341st TimLeffke 735 68 16ms 18 Aug 2022 341st tails618 735 68 16ms 2 Dec 2022 341st Yareeeema 735 68 17ms 6 Jan 2023 341st Skwerl23 735 68 16ms 6 Feb 2023 341st CatsAreFluffy 735 68 17ms 18 Feb 2023 341st kyleclaassen 735 68 16ms 28 May 2023 341st Azearia 735 68 17ms 13 Aug 2023 341st jmjaggi1202 735 68 16ms 13 Dec 2023 341st amollberg 🇸🇪 735 68 17ms 9 Jan 2024 341st Ralac07 🇦🇺 735 68 19ms 12 Jun 2024 341st JesseNoEyes 🇺🇸 735 68 17ms 12 Oct 2024 341st 6t41m0ct5 735 68 16ms 14 Apr 2025 341st 40fied4t 735 68 16ms 15 May 2025 341st frankgraziano 735 68 16ms 16 Jul 2025 341st Upload-and-View 🇺🇦 735 68 18ms 26 Aug 2025 359th Braffolk 725 69 20ms 15 Aug 2022 359th eddvrs 725 69 16ms 19 Aug 2022 359th mdnestor 725 69 16ms 27 Dec 2022 359th UriyaBA 725 69 17ms 20 Mar 2023 359th A-Dummo 725 69 18ms 28 May 2023 359th Fanrco 725 69 17ms 31 Aug 2023 359th epic-programmer-guy 725 69 20ms 20 Dec 2023 359th ComputerKWasTaken 🇺🇸 725 69 22ms 1 Jun 2024 359th julian-hoelz 725 69 17ms 15 Sep 2024 359th codewrite 🇬🇧 725 69 16ms 24 May 2025 359th Yash-Sangtani 725 69 16ms 5 Oct 2025 359th TJK-S 725 69 17ms 22 Oct 2025 371st twocatsinatrenchcoat 714 70 16ms 8 Aug 2022 371st aidan242 714 70 16ms 22 Aug 2022 371st Darkseid-SUP 714 70 16ms 15 Jan 2023 371st MWI-polygolf 714 70 13ms 6 Dec 2023 371st SURAJMITTAL 714 70 20ms 19 Dec 2024 371st SOONwasTaken 714 70 16ms 19 Mar 2025 377th julienlamoureux78 704 71 16ms 10 Aug 2022 377th MisterrLuck 704 71 16ms 8 Sep 2023 377th Mr-McChicken 704 71 16ms 18 Oct 2023 377th Nightmarius 704 71 19ms 19 Jan 2024 377th DGipe 704 71 16ms 13 May 2024 377th therealnumbers 704 71 16ms 4 Jun 2024 383rd Bananapants22 694 72 16ms 10 Aug 2022 383rd Ted-Barrett 🇦🇺 694 72 16ms 21 Aug 2022 383rd nmgetahun 694 72 16ms 5 Dec 2022 383rd mbittner20 694 72 16ms 27 May 2023 383rd sciencejiho 694 72 15ms 4 May 2024 383rd IoLimmer 694 72 16ms 25 Jul 2024 383rd Unknownuserfrommars 694 72 14ms 21 Nov 2024 383rd Quirkly-Quasar1 🇺🇸 694 72 14ms 8 Dec 2024 383rd WillowWispy 694 72 16ms 15 Mar 2025 383rd cthierfelder 🇲🇨 694 72 16ms 3 Sep 2025 393rd austinrwarner 685 73 14ms 12 Aug 2022 393rd jiaminglimjm 🇲🇾 685 73 17ms 25 Mar 2023 393rd kkoenig 685 73 18ms 8 Jan 2024 393rd j3mak 685 73 16ms 17 Jan 2024 393rd ariesmarinus 685 73 17ms 3 Dec 2024 393rd clayboll99 685 73 16ms 9 Jul 2025 399th vuxlee584 🇻🇳 676 74 14ms 15 Aug 2022 399th destofr 676 74 16ms 23 Aug 2022 First Prev 321–400 of 471 Next Last