The Calendar hole will go live in approximately 7 days. Why not try and solve it ahead of time?
Niven Numbers (Long) in all languages 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 480th GrayJoKing 🇦🇺 912 78 124ms 14 Aug 2022 480th primo-ppcg 🇹🇭 912 78 123ms 4 Sep 2022 480th stefangimmillaro 912 78 125ms 7 Jun 2023 480th MeWhenI 🇻🇦 912 78 118ms 8 Aug 2023 480th rucin93 🇵🇱 912 78 124ms 11 Dec 2023 480th Yewzir 🇧🇪 912 78 124ms 10 Apr 2024 480th lynn 912 78 125ms 7 Jul 2024 488th mikiymk 911 40 41ms 21 Sep 2023 488th aydamak 911 40 43ms 15 May 2024 488th ejini6969 911 40 41ms 14 Jun 2025 488th blaztoma 🇱🇹 911 40 42ms 12 Oct 2025 492nd Lydxn 🇨🇦 911 70 455ms 7 Sep 2022 492nd JayXon 🇺🇸 911 70 479ms 7 Sep 2022 492nd Steffan153 🇫🇮 911 70 459ms 4 Jan 2023 492nd Shanethegamer 🇺🇸 911 70 450ms 8 Mar 2023 492nd sean-niemann 🇺🇸 911 70 434ms 21 Jan 2025 492nd fuzzylojik-golf 🇺🇸 911 70 493ms 19 Aug 2025 492nd snoozingnewt 🇨🇦 911 70 387ms 14 days ago 499th sisyphus-ppcg 🇦🇺 911 83 59ms 8 Aug 2022 500th Lydxn 🇨🇦 909 44 52ms 9 Aug 2022 501st Lydxn 🇨🇦 909 68 38ms 9 Aug 2022 501st GrayJoKing 🇦🇺 909 68 37ms 13 Aug 2022 501st primo-ppcg 🇹🇭 909 68 37ms 4 Sep 2022 501st JayXon 🇺🇸 909 68 37ms 9 Sep 2022 501st sean-niemann 🇺🇸 909 68 38ms 21 Apr 2023 501st Yewzir 🇧🇪 909 68 37ms 10 Apr 2024 501st Steffan153 🇫🇮 909 68 39ms 2 Aug 2024 501st pardouin 🇫🇷 909 68 38ms 8 Apr 2025 501st DialFrost 🇸🇬 909 68 36ms 11 Apr 2025 501st fuzzylojik-golf 🇺🇸 909 68 37ms 6 Sep 2025 511th lifthrasiir 🇰🇷 908 25 3ms 28 Nov 2024 512th Steffan153 🇫🇮 908 49 4ms 11 Apr 2023 513th edsrzf 🇳🇿 908 74 19ms 18 Jan 2025 514th Steffan153 🇫🇮 907 50 140ms 5 Aug 2024 515th Lydxn 🇨🇦 907 63 39ms 11 Nov 2022 515th marshallward 🇺🇸 907 63 39ms 11 Nov 2022 517th kkoenig 907 98 261ms 8 Jan 2024 518th SirFireball3521 906 26 177ms 8 Mar 2023 518th yokasuretsu 906 26 186ms 6 Jan 2025 518th fuzzylojik-golf 🇺🇸 906 26 184ms 21 Aug 2025 521st prplz 🇦🇺 906 51 141ms 12 Dec 2022 521st Steffan153 🇫🇮 906 51 148ms 15 Aug 2024 523rd eranws 906 53 34ms 1 Nov 2022 524th sisyphus-ppcg 🇦🇺 905 62 83ms 8 Aug 2022 524th GrayJoKing 🇦🇺 905 62 82ms 14 Aug 2022 524th primo-ppcg 🇹🇭 905 62 84ms 4 Sep 2022 524th steffan-polygolf 905 62 80ms 19 Feb 2023 524th MeWhenI 🇻🇦 905 62 81ms 21 Feb 2023 524th stefangimmillaro 905 62 82ms 15 Apr 2023 524th Yewzir 🇧🇪 905 62 80ms 10 Apr 2024 531st nwellnhof 🇩🇪 904 40 3,924ms 9 Mar 2023 531st HumanEquivalentUnit 904 40 4,024ms 24 Oct 2023 531st dcgjb 904 40 4,004ms 23 Jan 2024 531st DialFrost 🇸🇬 904 40 3,988ms 10 Oct 2024 535th ovs-code 🇩🇪 904 50 345ms 15 Jan 2024 535th Shanethegamer 🇺🇸 904 50 342ms 16 Jan 2024 535th Steffan153 🇫🇮 904 50 354ms 16 Jan 2024 535th AlephSquirrel 904 50 341ms 16 Jan 2024 535th xsot 🇸🇬 904 50 354ms 25 Jan 2024 535th MeWhenI 🇻🇦 904 50 344ms 24 May 2024 535th kg583 🇺🇸 904 50 340ms 28 Jul 2024 535th CaedenHarper 🇨🇦 904 50 1,059ms 15 days ago 543rd AlephSquirrel 904 54 13ms 23 Apr 2023 543rd ovs-code 🇩🇪 904 54 12ms 10 Dec 2023 545th sisyphus-ppcg 🇦🇺 904 63 122ms 8 Aug 2022 545th GrayJoKing 🇦🇺 904 63 122ms 14 Aug 2022 545th primo-ppcg 🇹🇭 904 63 119ms 4 Sep 2022 545th steffan-polygolf 904 63 121ms 19 Feb 2023 545th MeWhenI 🇻🇦 904 63 121ms 21 Feb 2023 545th Yewzir 🇧🇪 904 63 125ms 10 Apr 2024 551st Sp3000 🇦🇺 903 54 16ms 8 Aug 2022 551st GolfingSuccess 🇬🇷 903 54 16ms 8 Aug 2022 551st 051 🇸🇬 903 54 16ms 8 Aug 2022 551st CubeyTheCube 903 54 16ms 8 Aug 2022 551st jared-hughes 903 54 16ms 9 Aug 2022 551st annaproxy 903 54 16ms 9 Aug 2022 551st BlankSpruce 903 54 16ms 17 Aug 2022 551st prplz 🇦🇺 903 54 16ms 19 Aug 2022 551st bob-th 903 54 16ms 22 Aug 2022 551st TFeld00 🇩🇰 903 54 16ms 3 Oct 2022 First Prev 481–560 of 2,463 Next Last