The Calendar hole will go live in approximately 9 days. Why not try and solve it ahead of time?
Factorial Factorisation 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 320th Mandrzejy 🇵🇱 737 115 2ms 27 Apr 2024 322nd dokutan 737 135 383ms 18 Nov 2025 323rd BREMAUCY 🇫🇷 736 93 45ms 15 Apr 2024 324th albanian-laundromat 734 140 44ms 8 Sep 2025 325th m-tkach 🇺🇦 733 202 487ms 15 Jan 2025 326th Shanethegamer 🇺🇸 731 155 127ms 16 Apr 2024 327th Herbert00709 🇵🇱 730 116 2ms 28 Apr 2024 328th duckyluuk 🇳🇱 727 110 43ms 17 Apr 2024 329th inventshah 727 147 460ms 29 Mar 2025 330th mousetail 🇳🇱 726 156 133ms 16 Aug 2024 331st GolfingSuccess 🇬🇷 724 110 374ms 15 Apr 2024 332nd stefangimmillaro 724 131 44ms 26 Apr 2025 333rd GolfingSuccess 🇬🇷 724 234 494ms 19 Jan 2025 334th anter69 🇭🇺 723 115 97ms 15 Apr 2024 334th fourth-bit 723 115 701ms 27 Sep 2024 334th souta-1326 723 115 12ms 26 May 2025 337th BlankSpruce 722 148 81ms 22 Aug 2024 338th Shanethegamer 🇺🇸 721 138 380ms 16 Apr 2024 339th Natanaelel 🇸🇪 720 144 126ms 20 Apr 2024 340th msbranicky 720 154 157ms 14 Apr 2024 341st AlephSquirrel 718 111 435ms 13 Apr 2024 342nd Shanethegamer 🇺🇸 717 116 16ms 13 Apr 2024 343rd msbranicky 717 181 263ms 14 Apr 2024 344th snoozingnewt 🇨🇦 715 155 110ms 20 Nov 2025 345th helbling 🇨🇭 714 112 22ms 18 Apr 2024 346th msbranicky 712 159 125ms 14 Apr 2024 347th lifthrasiir 🇰🇷 711 112 1,095ms 2 Dec 2024 348th lifthrasiir 🇰🇷 711 117 722ms 10 Nov 2024 348th snydej 711 117 17ms 28 Nov 2024 350th MeWhenI 🇻🇦 708 113 11ms 3 Aug 2024 351st msbranicky 707 164 128ms 16 Apr 2024 352nd CornerMercury 🇬🇧 705 118 18ms 4 hours ago 353rd KrausRaus 🇺🇸 701 114 13ms 29 Apr 2024 354th MeWhenI 🇻🇦 700 111 1,072ms 21 Apr 2024 355th Shanethegamer 🇺🇸 699 116 70ms 16 Apr 2024 356th sultan 699 119 47ms 15 Apr 2024 356th ndren 699 119 11ms 28 Nov 2024 358th dcgjb 697 117 395ms 29 Apr 2024 359th albanian-laundromat 697 243 534ms 18 Oct 2025 360th retrohun 696 659 1ms 23 Aug 2025 361st emgordon154 694 126 135ms 15 Nov 2024 362nd m-tkach 🇺🇦 693 120 744ms 14 Apr 2024 362nd ZakkkkAttackkkk 🇵🇭 693 120 653ms 9 Sep 2024 362nd InigoK 🇺🇸 693 120 12ms 10 Sep 2025 365th Shanethegamer 🇺🇸 692 230 44ms 13 Apr 2024 366th 4hg 🇺🇸 691 55 38ms 3 Nov 2024 367th Waffle3z 690 147 7ms 28 Apr 2024 368th coreynash 689 116 12ms 23 May 2024 369th davitf 688 121 17ms 30 Apr 2024 369th neihousaigaai 688 121 11ms 2 Oct 2024 369th albanian-laundromat 688 121 12ms 6 Oct 2025 369th snoozingnewt 🇨🇦 688 121 12ms 20 Nov 2025 373rd Shanethegamer 🇺🇸 687 116 484ms 13 Apr 2024 374th inventshah 687 668 2ms 19 Apr 2024 375th MeWhenI 🇻🇦 683 671 2ms 22 Apr 2024 376th CaedenHarper 🇨🇦 681 117 535ms 29 Jul 2025 377th MeWhenI 🇻🇦 680 157 98ms 21 Apr 2024 378th Shanethegamer 🇺🇸 679 107 513ms 13 Apr 2024 379th olleicua 🇺🇸 678 101 151ms 23 Apr 2024 380th voytxt 🇨🇿 678 118 10ms 25 Jul 2024 381st MeWhenI 🇻🇦 678 125 4ms 21 Apr 2024 382nd MeWhenI 🇻🇦 678 167 126ms 21 Apr 2024 383rd MeWhenI 🇻🇦 677 125 792ms 15 Sep 2025 384th Bulmenisaurus 676 123 15ms 1 Nov 2024 384th CaedenHarper 🇨🇦 676 123 15ms 15 Aug 2025 384th HETHAT 🇩🇿 676 123 16ms 24 Sep 2025 387th MeWhenI 🇻🇦 676 150 2ms 22 Apr 2024 388th anter69 🇭🇺 675 115 970ms 13 Mar 2025 389th albanian-laundromat 675 157 688ms 12 Sep 2025 390th MeWhenI 🇻🇦 672 132 115ms 21 Apr 2024 391st Lv0Sys 🇵🇱 671 124 12ms 11 days ago 392nd MeWhenI 🇻🇦 671 153 41ms 26 Jun 2024 393rd m-tkach 🇺🇦 670 119 426ms 14 Apr 2024 394th msbranicky 666 125 11ms 13 Apr 2024 394th FlorianCassayre 🇫🇷 666 125 15ms 5 May 2024 394th guilhem-roy 🇫🇷 666 125 12ms 29 May 2025 394th blaztoma 🇱🇹 666 125 11ms 28 Sep 2025 398th retrohun 665 122 9ms 31 Dec 2024 399th msbranicky 664 173 11ms 18 Apr 2024 400th galloj 🇨🇿 664 691 1ms 16 Apr 2024 First Prev 321–400 of 1,428 Next Last