The Calendar hole will go live in approximately 6 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 401st msbranicky 664 173 11ms 18 Apr 2024 402nd galloj 🇨🇿 664 691 1ms 16 Apr 2024 403rd MeWhenI 🇻🇦 662 132 138ms 28 Oct 2024 404th elgan65536 660 126 15ms 13 Apr 2024 404th inventshah 660 126 15ms 15 Apr 2024 404th emgordon154 660 126 15ms 12 Apr 2025 404th khaninm 660 126 13ms 3 Jun 2025 404th fkantelberg 660 126 16ms 10 Jul 2025 404th solisolu 660 126 683ms 5 Oct 2025 410th emgordon154 658 121 509ms 12 Apr 2025 410th snoozingnewt 🇨🇦 658 121 547ms 20 Nov 2025 412th inventshah 657 129 2ms 29 Mar 2025 413th Shanethegamer 🇺🇸 656 152 1,312ms 13 Apr 2024 414th jatloe 655 127 67ms 8 Oct 2024 414th klixel 🇨🇦 655 127 91ms 8 Apr 2025 416th emgordon154 655 173 142ms 18 Feb 2025 417th duckyluuk 🇳🇱 654 162 93ms 12 Jun 2025 418th dokutan 654 701 2ms 22 Apr 2024 419th BlankSpruce 652 130 2ms 21 Aug 2024 420th HumanoidCPU 652 167 501ms 8 Nov 2025 421st dokutan 651 130 752ms 8 Nov 2025 422nd thienudomsrirungruang 650 128 310ms 15 Apr 2024 422nd mathisfun271 650 128 12ms 1 Jun 2024 422nd cros107 🇦🇺 650 128 15ms 12 Jan 2025 425th emgordon154 650 139 4,121ms 13 Nov 2024 426th ei14 650 706 1ms 8 May 2024 427th elgan65536 647 131 1ms 15 Apr 2024 428th MeWhenI 🇻🇦 646 140 3,322ms 24 Oct 2024 429th hellwue 645 129 12ms 21 Jun 2024 429th plcc0 645 129 156ms 23 Apr 2025 431st mousetail 🇳🇱 644 123 19ms 17 Aug 2024 432nd albanian-laundromat 643 121 24ms 17 hours ago 433rd DialFrost 🇸🇬 641 148 44ms 25 Apr 2025 434th Artemis21 🇬🇧 640 130 19ms 15 Jan 2025 435th retrohun 637 122 9ms 31 Dec 2024 436th msbranicky 637 125 717ms 13 Apr 2024 437th MeWhenI 🇻🇦 637 137 2ms 26 Jun 2024 438th CatsAreFluffy 636 178 127ms 3 Nov 2024 439th IsaacAlexBarden 635 131 22ms 24 Mar 2025 439th keelimeguy 🇺🇸 635 131 18ms 14 Jun 2025 441st Shanethegamer 🇺🇸 634 140 123ms 15 Apr 2024 442nd typeswitch-dev 🇵🇹 633 187 9ms 25 Jun 2024 443rd BambooleanLogic 🇸🇪 630 127 10ms 15 May 2024 443rd FlorianCassayre 🇫🇷 630 127 13ms 5 Jun 2024 445th StefanHabel 🇨🇦 630 132 16ms 16 Apr 2024 445th TobyBoyne 🇬🇧 630 132 723ms 5 Mar 2025 447th blaztoma 🇱🇹 630 231 138ms 25 days ago 448th albanian-laundromat 627 127 424ms 4 Aug 2025 449th quimey 626 133 15ms 27 May 2024 449th tobyLovick 626 133 12ms 3 Mar 2025 449th wuduculfre 626 133 11ms 3 Aug 2025 452nd zakariamouhid 625 128 10ms 13 Apr 2024 452nd gigaprofisi 🇺🇸 625 128 12ms 23 Jul 2025 454th FlyingPenguin223 625 162 9ms 26 Sep 2024 455th ahmetdemirag 🇨🇾 621 134 647ms 3 Feb 2025 455th madex 🇩🇪 621 134 13ms 1 Jun 2025 455th YAJUE114514 621 134 12ms 27 Jul 2025 455th qpwoeirut 621 134 717ms 10 Aug 2025 459th Maznek 620 129 10ms 29 Apr 2024 459th wansacis 🇩🇪 620 129 11ms 30 Apr 2024 461st GolfingSuccess 🇬🇷 619 128 110ms 16 Aug 2024 462nd Shanethegamer 🇺🇸 619 210 261ms 14 Apr 2024 463rd arcpolaris 618 161 380ms 11 Dec 2024 464th FranklinJiaChen 616 135 16ms 30 Jul 2024 465th niklv 🇷🇺 615 130 10ms 14 Apr 2024 465th two-bad 🇬🇧 615 130 9ms 4 May 2024 465th GeorgeStechman 🇬🇧 615 130 10ms 4 May 2024 465th didion0 🇺🇸 615 130 11ms 26 Aug 2025 469th moustave 612 136 11ms 25 Mar 2025 470th msbranicky 612 145 136ms 13 Apr 2024 471st emgordon154 610 130 365ms 5 Sep 2024 472nd iczelia 🇩🇪 610 139 1ms 22 Sep 2025 473rd snoozingnewt 🇨🇦 608 120 88ms 12 Sep 2025 474th MeWhenI 🇻🇦 608 131 523ms 24 May 2024 475th galloj 🇨🇿 607 137 12ms 13 Apr 2024 475th Rubiksmath 607 137 15ms 29 Sep 2024 475th andrewjc2000 607 137 2,491ms 28 Jul 2025 475th SectorCorruptor 607 137 19ms 21 Sep 2025 479th AutumnWind75 607 176 403ms 15 days ago 480th luuumine 🇫🇷 606 187 132ms 17 days ago First Prev 401–480 of 1,431 Next Last