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 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 396th HanaEndUser 676 74 17ms 6 Feb 2024 396th GeneralFabian 676 74 16ms 12 Dec 2024 396th robin-scragg 676 74 17ms 22 May 2025 396th webmiche 676 74 19ms 3 Nov 2025 405th NerdyMcNerd42 667 75 16ms 13 Aug 2022 405th mrmena 🇦🇺 667 75 17ms 23 Mar 2024 405th EvyGithub 667 75 18ms 14 May 2024 408th 104210 658 76 18ms 17 Aug 2022 408th brimstonetrader 658 76 17ms 6 Jan 2024 408th Bit125 658 76 17ms 25 Jan 2024 408th yuchuehw 658 76 18ms 13 Feb 2024 408th XioR112 🇵🇱 658 76 16ms 17 Apr 2024 408th WCScrypto-official 658 76 18ms 21 Dec 2024 408th AstroOrbis 658 76 23ms 15 Jun 2025 408th PotatoSaladOverlord 658 76 21ms 20 Jun 2025 408th TheAtrossian 658 76 18ms 24 days ago 417th Liastrae 649 77 16ms 22 Aug 2022 417th EthanGrant1 649 77 16ms 31 Aug 2022 417th jstechman 649 77 17ms 6 Mar 2024 417th TeddyWoodburn 649 77 16ms 6 Oct 2024 417th strogor 649 77 16ms 11 Jun 2025 417th Hyperoplex145 649 77 16ms 21 days ago 423rd bwenstar 641 78 16ms 11 Aug 2022 423rd ThatAlo 641 78 22ms 25 Aug 2022 423rd NDR0216 🇹🇼 641 78 451ms 13 Feb 2023 423rd cingulataluke 641 78 15ms 29 Aug 2023 427th sagnik3 633 79 17ms 8 Aug 2022 427th atazzam 🇺🇸 633 79 16ms 17 Aug 2022 427th mobibluman 633 79 25ms 24 Aug 2022 427th dranjohn 633 79 15ms 11 Sep 2023 427th ztuned 633 79 393ms 23 Sep 2023 427th qwjhvbxi 633 79 13ms 7 Feb 2024 427th Mabeloid 🇳🇴 633 79 16ms 3 Oct 2024 434th shinylego 625 80 13ms 14 Sep 2022 434th zt14427 625 80 17ms 18 Nov 2023 434th PyryL 🇫🇮 625 80 16ms 25 Aug 2024 437th grave367 617 81 14ms 5 Mar 2023 437th jrbud 617 81 17ms 7 Jan 2024 437th Selyss 617 81 16ms 9 Mar 2024 440th Import-Meow 610 82 17ms 29 Aug 2022 440th Anthony-Williams-06 610 82 16ms 1 Dec 2022 440th ko-umeja 610 82 20ms 4 Dec 2022 440th FernSch 610 82 17ms 22 Mar 2024 440th hetz2625 610 82 16ms 5 May 2025 445th grndng 602 83 17ms 23 Aug 2022 445th Very-Nerdy-Human 602 83 19ms 13 Jan 2024 447th seejaecee 581 86 14ms 7 Feb 2025 447th koweret 581 86 18ms 13 Sep 2025 449th UltimateGuy0987 568 88 17ms 14 Oct 2022 449th dylanjones92 568 88 16ms 22 Jan 2024 449th TheCod-r 🇦🇶 568 88 22ms 3 Aug 2024 449th hamilton-bonds 568 88 13ms 9 Sep 2024 453rd elephantpanda 562 89 13ms 10 Aug 2022 453rd 0dyse 562 89 1,501ms 28 Sep 2025 455th OleBrumm 549 91 15ms 22 Aug 2022 456th jlevis10 532 94 27ms 12 Oct 2023 456th gelvetica 532 94 21ms 18 Nov 2024 458th ze-h 🇺🇸 435 115 21ms 22 Aug 2022 459th ro011110ot 427 117 19ms 24 Aug 2025 460th kevinnaviapaiva 400 125 14ms 12 Feb 2025 461st StanicKlemen 388 129 16ms 9 Aug 2022 462nd vallenrod 362 138 15ms 11 Aug 2022 462nd StevenGoebl 362 138 17ms 2 Sep 2025 464th AidanWalter 294 170 17ms 3 Jan 2025 465th Laellekoenig 279 179 13ms 7 Nov 2025 466th halmgillman 269 186 19ms 20 Feb 2024 467th JeromeChristopherJ 260 192 16ms 16 Sep 2023 468th Zhenyu-Bo 155 323 16ms 1 Aug 2025 469th retrohun 7 7,450 12ms 28 Dec 2022 469th kurkale6ka 7 7,450 12ms 13 days ago 471st KatieLG-Transpiler 🇬🇧 6 8,983 12ms 8 Aug 2022 First Prev 401–471 of 471