The Calendar hole will go live in approximately 6 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 719th pardouin 🇫🇷 885 79 429ms 26 Sep 2025 719th fuzzylojik-golf 🇺🇸 885 79 387ms 26 Sep 2025 719th Yewzir 🇧🇪 885 79 461ms 2 Oct 2025 719th m-tkach 🇺🇦 885 79 438ms 3 Oct 2025 719th Yax42 🇫🇷 885 79 350ms 5 Oct 2025 719th namelessiw 885 79 387ms 6 Oct 2025 719th b-illy 🇬🇧 885 79 543ms 17 days ago 728th Steffan153 🇫🇮 884 45 16ms 11 Aug 2024 728th sisyphus-ppcg 🇦🇺 884 45 24ms 12 Aug 2024 728th Shanethegamer 🇺🇸 884 45 16ms 14 Aug 2024 728th DialFrost 🇸🇬 884 45 16ms 17 Aug 2024 732nd dokutan 884 76 24ms 1 Jul 2024 732nd zacjl 884 76 22ms 19 Jan 2025 734th GrayJoKing 🇦🇺 883 99 24ms 14 Aug 2022 734th primo-ppcg 🇹🇭 883 99 25ms 4 Sep 2022 734th m-tkach 🇺🇦 883 99 25ms 2 Jun 2023 737th SirBogman 🇺🇸 882 41 4,112ms 6 Jan 2024 737th juliansiebert 🇩🇪 882 41 4,044ms 2 Mar 2025 739th MeWhenI 🇻🇦 881 70 93ms 22 Mar 2024 740th janbehrens 🇩🇪 880 44 400ms 8 Aug 2022 740th MeWhenI 🇻🇦 880 44 346ms 25 Nov 2022 742nd Steffan153 🇫🇮 880 101 270ms 17 Dec 2022 742nd MeWhenI 🇻🇦 880 101 268ms 21 Feb 2023 742nd stefangimmillaro 880 101 278ms 14 Jun 2023 742nd sean-niemann 🇺🇸 880 101 258ms 17 Jun 2023 742nd Yewzir 🇧🇪 880 101 271ms 10 Apr 2024 742nd pardouin 🇫🇷 880 101 266ms 20 Oct 2024 742nd fuzzylojik-golf 🇺🇸 880 101 268ms 15 Jul 2025 742nd b-illy 🇬🇧 880 101 255ms 8 days ago 750th pardouin 🇫🇷 879 86 62ms 21 Oct 2024 751st AlephSquirrel 878 88 96ms 31 Jan 2025 751st DialFrost 🇸🇬 878 88 112ms 14 Apr 2025 751st edsrzf 🇳🇿 878 88 109ms 25 days ago 751st snoozingnewt 🇨🇦 878 88 100ms 24 days ago 751st pardouin 🇫🇷 878 88 99ms 21 days ago 756th canissimia 🇦🇶 878 218 7ms 21 Aug 2022 757th primo-ppcg 🇹🇭 876 94 17ms 4 Sep 2022 757th Steffan153 🇫🇮 876 94 14ms 28 Jul 2024 757th pardouin 🇫🇷 876 94 15ms 21 Oct 2024 760th dokutan 875 36 1,011ms 30 Apr 2024 761st sisyphus-ppcg 🇦🇺 875 69 98ms 14 Oct 2022 761st Steffan153 🇫🇮 875 69 99ms 17 Nov 2022 761st sean-niemann 🇺🇸 875 69 98ms 11 Apr 2023 761st m-tkach 🇺🇦 875 69 99ms 2 Jun 2023 761st stefangimmillaro 875 69 95ms 14 Jun 2023 761st Yewzir 🇧🇪 875 69 102ms 10 Apr 2024 761st pardouin 🇫🇷 875 69 105ms 21 Oct 2024 761st DialFrost 🇸🇬 875 69 104ms 11 Apr 2025 761st fuzzylojik-golf 🇺🇸 875 69 105ms 28 Aug 2025 770th pardouin 🇫🇷 874 67 2ms 21 Oct 2024 771st nwellnhof 🇩🇪 874 80 504ms 25 Sep 2025 771st stefangimmillaro 874 80 583ms 6 Oct 2025 771st sisyphus-ppcg 🇦🇺 874 80 464ms 25 Nov 2025 771st CaedenHarper 🇨🇦 874 80 570ms 16 days ago 771st snoozingnewt 🇨🇦 874 80 334ms 15 days ago 776th pardouin 🇫🇷 874 100 25ms 21 Oct 2024 777th GolfingSuccess 🇬🇷 873 26 3ms 9 Feb 2023 777th Natanaelel 🇸🇪 873 26 3ms 18 Nov 2023 777th akamayu-ouo 🇹🇼 873 26 3ms 30 Jul 2024 777th 4hg 🇺🇸 873 26 3ms 9 Sep 2024 777th CornerMercury 🇬🇧 873 26 3ms 17 days ago 782nd BambooleanLogic 🇸🇪 873 55 11ms 22 Aug 2022 782nd Mazn3k 873 55 33ms 14 Feb 2023 782nd jbt 873 55 13ms 28 Dec 2023 782nd xyangst 873 55 13ms 7 Oct 2024 782nd tomh1012 873 55 11ms 22 days ago 787th DialFrost 🇸🇬 873 63 3ms 11 Apr 2025 787th MeWhenI 🇻🇦 873 63 3ms 20 hours ago 789th DialFrost 🇸🇬 873 124 468ms 11 Apr 2025 790th primo-ppcg 🇹🇭 873 184 54ms 13 Aug 2025 791st 4hg 🇺🇸 872 27 173ms 9 Feb 2023 792nd DialFrost 🇸🇬 872 52 226ms 4 Aug 2024 792nd pardouin 🇫🇷 872 52 136ms 28 Feb 2025 794th MeWhenI 🇻🇦 872 77 21ms 9 May 2024 795th canissimia 🇦🇶 872 149 3,145ms 23 Jul 2023 796th guilhem-roy 🇫🇷 871 56 15ms 8 Aug 2022 796th btjones0 871 56 16ms 30 Aug 2022 796th jfallon1997 871 56 16ms 6 Sep 2022 796th suwat513 871 56 19ms 24 Sep 2022 796th jsthope 871 56 16ms 28 Sep 2022 First Prev 721–800 of 2,465 Next Last