The Calendar hole will go live in approximately 4 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 241st MeWhenI 🇻🇦 809 137 102ms 21 Apr 2024 242nd KasperKivimaeki 🇫🇮 808 103 77ms 27 days ago 242nd bizy-coder 808 103 201ms 22 days ago 244th rucin93 🇵🇱 808 108 3ms 18 Nov 2025 245th MeWhenI 🇻🇦 808 161 265ms 22 Apr 2024 246th DialFrost 🇸🇬 807 134 44ms 25 Jun 2025 247th Shanethegamer 🇺🇸 805 85 52ms 13 Apr 2024 247th Just4FunCoder 805 85 43ms 18 Jun 2025 249th annaproxy 804 132 31ms 5 Sep 2025 250th Shanethegamer 🇺🇸 803 138 457ms 15 Apr 2024 251st emgordon154 803 142 14ms 10 Jan 2025 252nd sean-niemann 🇺🇸 803 162 267ms 1 May 2024 253rd MeWhenI 🇻🇦 802 132 97ms 12 Jan 2025 254th MeWhenI 🇻🇦 800 104 97ms 21 Apr 2024 254th SirBogman 🇺🇸 800 104 20ms 12 Aug 2025 256th namelessiw 800 136 474ms 4 Oct 2025 257th nomennescio 799 113 676ms 9 Dec 2024 258th edsrzf 🇳🇿 795 136 40ms 10 hours ago 259th MeWhenI 🇻🇦 795 137 450ms 7 Nov 2025 260th Shanethegamer 🇺🇸 795 146 123ms 21 Jun 2024 261st sisyphus-ppcg 🇦🇺 793 92 85ms 15 Apr 2024 262nd Natanaelel 🇸🇪 792 48 34ms 2 Mar 2025 263rd dmrichwa 🇺🇸 792 101 13ms 3 Jul 2024 264th duckyluuk 🇳🇱 792 105 718ms 16 Apr 2024 264th IshanPanpaliya 792 105 68ms 25 days ago 266th Shanethegamer 🇺🇸 792 114 70ms 6 Dec 2024 267th Mandrzejy 🇵🇱 792 135 59ms 27 Apr 2024 267th Herbert00709 🇵🇱 792 135 63ms 28 Apr 2024 269th sean-niemann 🇺🇸 792 140 105ms 18 Aug 2025 270th stefangimmillaro 792 143 144ms 17 Apr 2024 271st DialFrost 🇸🇬 791 103 233ms 11 Jun 2024 272nd Shanethegamer 🇺🇸 791 128 59ms 16 Apr 2024 273rd GolfingSuccess 🇬🇷 790 134 37ms 12 Jan 2025 274th kmathis22 789 138 598ms 20 days ago 275th Natanaelel 🇸🇪 787 82 114ms 22 Apr 2024 276th CLOStrophobic 🇮🇹 784 138 47ms 13 Feb 2025 277th stefangimmillaro 783 135 108ms 14 Apr 2024 278th lifthrasiir 🇰🇷 779 51 2ms 28 Nov 2024 279th AlephSquirrel 779 141 86ms 13 Apr 2024 280th namelessiw 777 128 377ms 9 Apr 2025 281st Shanethegamer 🇺🇸 776 103 12ms 13 Apr 2024 282nd duckyluuk 🇳🇱 774 103 1,026ms 16 Apr 2024 283rd DialFrost 🇸🇬 774 134 143ms 6 Aug 2024 284th jared-hughes 773 131 9ms 3 days ago 285th MeWhenI 🇻🇦 771 129 368ms 19 Jun 2025 286th Salutations45 770 101 4ms 30 Nov 2024 287th neel11235813 770 108 66ms 13 Apr 2024 287th stefangimmillaro 770 108 69ms 17 Apr 2024 289th emgordon154 770 220 498ms 30 May 2025 290th MeWhenI 🇻🇦 769 106 476ms 17 Apr 2024 291st DialFrost 🇸🇬 767 114 145ms 28 Oct 2024 292nd SirBogman 🇺🇸 766 104 399ms 12 Aug 2025 293rd bricknellj 763 109 20ms 16 May 2024 294th MichalMarsalek 🇨🇿 763 152 144ms 13 Apr 2024 295th DialFrost 🇸🇬 762 144 21ms 10 Dec 2024 295th edsrzf 🇳🇿 762 144 47ms 11 Feb 2025 297th Lv0Sys 🇵🇱 761 105 10ms 16 days ago 298th albanian-laundromat 761 135 45ms 3 days ago 299th Shanethegamer 🇺🇸 761 139 111ms 16 Apr 2024 300th dokutan 761 143 446ms 18 Nov 2025 301st TheZwierzLF 🇵🇱 760 90 51ms 7 days ago 302nd albanian-laundromat 760 171 258ms 2 days ago 303rd emgordon154 758 168 24ms 10 Dec 2024 304th jipsong 🇩🇪 756 110 16ms 12 Mar 2025 304th annaproxy 756 110 11ms 5 Sep 2025 306th snoozingnewt 🇨🇦 756 144 432ms 21 days ago 307th Natanaelel 🇸🇪 754 106 10ms 15 Apr 2024 308th SirBogman 🇺🇸 753 126 43ms 3 Jun 2025 309th ethanlally 751 145 451ms 10 Nov 2025 310th GolfingSuccess 🇬🇷 750 111 12ms 15 Apr 2024 310th yujh-yujh 🇬🇸 750 111 16ms 15 days ago 312th elgan65536 750 151 137ms 15 Apr 2024 313th msbranicky 749 253 1,692ms 17 Sep 2025 314th CaedenHarper 🇨🇦 747 107 12ms 6 Sep 2025 315th edsrzf 🇳🇿 746 121 646ms 26 Jan 2025 316th SirBogman 🇺🇸 745 51 37ms 21 Apr 2024 317th CatsAreFluffy 744 91 131ms 4 Nov 2024 318th neel11235813 744 92 46ms 14 Apr 2024 319th AlephSquirrel 743 112 12ms 13 Apr 2024 320th elgan65536 743 175 267ms 15 Apr 2024 First Prev 241–320 of 1,434 Next Last