The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Niven Numbers (Long) in all languages 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 477th edsrzf 🇳🇿 919 26 123ms 5 Nov 2025 482nd mikiymk 918 40 41ms 21 Sep 2023 482nd aydamak 918 40 43ms 15 May 2024 482nd ejini6969 918 40 62ms 14 Jun 2025 482nd blaztoma 🇱🇹 918 40 44ms 12 Oct 2025 486th Lydxn 🇨🇦 918 44 68ms 9 Aug 2022 487th annaproxy 918 63 181ms 9 Aug 2022 487th arjanadriaanse 🇳🇱 918 63 189ms 9 Aug 2022 487th strout 918 63 182ms 15 Aug 2022 487th Awsute 918 63 290ms 25 Aug 2022 487th primo-ppcg 🇹🇭 918 63 183ms 4 Sep 2022 492nd nwellnhof 🇩🇪 918 64 5ms 8 Aug 2022 492nd saito-ta 🇯🇵 918 64 4ms 9 Aug 2022 492nd HPWiz 🇳🇿 918 64 4ms 14 Aug 2022 492nd JayXon 🇺🇸 918 64 1,242ms 10 Nov 2022 492nd Lydxn 🇨🇦 918 64 1,301ms 11 Nov 2022 492nd JohandeRuiter 🇳🇱 918 64 4ms 5 Nov 2023 492nd Steffan153 🇫🇮 918 64 1,306ms 28 Jul 2024 492nd pardouin 🇫🇷 918 64 1,290ms 21 Oct 2024 492nd DialFrost 🇸🇬 918 64 1,340ms 11 Apr 2025 492nd sean-niemann 🇺🇸 918 64 1,271ms 18 Apr 2025 492nd fuzzylojik-golf 🇺🇸 918 64 1,285ms 2 Sep 2025 492nd KasperKivimaeki 🇫🇮 918 64 5ms 15 Nov 2025 504th nwellnhof 🇩🇪 918 102 269ms 8 Aug 2022 504th Lydxn 🇨🇦 918 102 274ms 9 Aug 2022 504th JayXon 🇺🇸 918 102 270ms 10 Aug 2022 504th primo-ppcg 🇹🇭 918 102 268ms 4 Sep 2022 504th Steffan153 🇫🇮 918 102 266ms 17 Dec 2022 504th MeWhenI 🇻🇦 918 102 278ms 21 Feb 2023 504th stefangimmillaro 918 102 267ms 14 Jun 2023 504th m-tkach 🇺🇦 918 102 266ms 14 Jun 2023 504th sean-niemann 🇺🇸 918 102 261ms 17 Jun 2023 504th Yewzir 🇧🇪 918 102 274ms 10 Apr 2024 504th pardouin 🇫🇷 918 102 273ms 21 Oct 2024 504th DialFrost 🇸🇬 918 102 258ms 11 Apr 2025 504th fuzzylojik-golf 🇺🇸 918 102 291ms 13 Jul 2025 504th kkoenig 918 102 269ms 6 Sep 2025 504th CaedenHarper 🇨🇦 918 102 342ms 10 days ago 504th b-illy 🇬🇧 918 102 348ms 28 hours ago 520th JayXon 🇺🇸 917 62 106ms 10 Nov 2022 520th Lydxn 🇨🇦 917 62 114ms 11 Nov 2022 520th sean-niemann 🇺🇸 917 62 95ms 1 Aug 2024 520th pardouin 🇫🇷 917 62 90ms 21 Oct 2024 520th DialFrost 🇸🇬 917 62 102ms 11 Apr 2025 520th fuzzylojik-golf 🇺🇸 917 62 93ms 29 Aug 2025 526th Steffan153 🇫🇮 917 67 15ms 28 Jul 2024 526th sean-niemann 🇺🇸 917 67 15ms 25 Mar 2025 526th DialFrost 🇸🇬 917 67 16ms 11 Apr 2025 529th Steffan153 🇫🇮 916 49 4ms 11 Apr 2023 529th DialFrost 🇸🇬 916 49 4ms 21 Dec 2024 531st sisyphus-ppcg 🇦🇺 916 78 121ms 8 Aug 2022 531st GrayJoKing 🇦🇺 916 78 124ms 14 Aug 2022 531st primo-ppcg 🇹🇭 916 78 123ms 4 Sep 2022 531st stefangimmillaro 916 78 125ms 7 Jun 2023 531st MeWhenI 🇻🇦 916 78 118ms 8 Aug 2023 531st rucin93 🇵🇱 916 78 124ms 11 Dec 2023 531st Yewzir 🇧🇪 916 78 124ms 10 Apr 2024 531st lynn 916 78 125ms 7 Jul 2024 539th 4hg 🇺🇸 915 29 382ms 27 Jan 2023 539th fuzzylojik-golf 🇺🇸 915 29 132ms 21 Aug 2025 541st Lydxn 🇨🇦 915 68 38ms 9 Aug 2022 541st GrayJoKing 🇦🇺 915 68 37ms 13 Aug 2022 541st primo-ppcg 🇹🇭 915 68 37ms 4 Sep 2022 541st JayXon 🇺🇸 915 68 37ms 9 Sep 2022 541st sean-niemann 🇺🇸 915 68 38ms 21 Apr 2023 541st Yewzir 🇧🇪 915 68 37ms 10 Apr 2024 541st Steffan153 🇫🇮 915 68 39ms 2 Aug 2024 541st pardouin 🇫🇷 915 68 38ms 8 Apr 2025 541st DialFrost 🇸🇬 915 68 36ms 11 Apr 2025 541st fuzzylojik-golf 🇺🇸 915 68 37ms 6 Sep 2025 551st JayXon 🇺🇸 915 72 479ms 8 Aug 2022 551st ovs-code 🇩🇪 915 72 421ms 8 Aug 2022 551st Lydxn 🇨🇦 915 72 455ms 8 Aug 2022 551st Steffan153 🇫🇮 915 72 459ms 4 Jan 2023 551st Shanethegamer 🇺🇸 915 72 450ms 8 Mar 2023 551st sean-niemann 🇺🇸 915 72 434ms 21 Jan 2025 551st fuzzylojik-golf 🇺🇸 915 72 493ms 19 Aug 2025 551st Yax42 🇫🇷 915 72 443ms 5 Oct 2025 551st snoozingnewt 🇨🇦 915 72 370ms 8 days ago 560th Lydxn 🇨🇦 914 63 39ms 11 Nov 2022 First Prev 481–560 of 2,482 Next Last
