The Calendar hole will go live in approximately 7 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 797th bac0id 149 866 2ms 26 Jun 2024 797th CaedenHarper 🇨🇦 149 866 2ms 22 Jan 2025 803rd KatieLG-Transpiler 🇬🇧 149 868 2ms 16 Aug 2024 803rd Mabeloid 🇳🇴 149 868 2ms 17 Sep 2024 805th KatieLG 🇬🇧 147 881 256ms 24 days ago 806th MeWhenI 🇻🇦 146 870 5ms 13 Apr 2024 806th HumanoidCPU 146 870 6ms 13 Apr 2024 806th Yewzir 🇧🇪 146 870 6ms 13 Apr 2024 806th KatieLG 🇬🇧 146 870 7ms 13 Apr 2024 806th Maximizer02 146 870 5ms 13 Apr 2024 806th dokutan 146 870 5ms 13 Apr 2024 806th Kaffeleif 146 870 5ms 15 Apr 2024 806th bac0id 146 870 6ms 25 Jun 2024 806th KatieLG-Transpiler 🇬🇧 146 870 5ms 16 Aug 2024 806th Mabeloid 🇳🇴 146 870 5ms 17 Sep 2024 806th CaedenHarper 🇨🇦 146 870 6ms 20 Jan 2025 817th Yewzir 🇧🇪 143 909 268ms 13 Apr 2024 817th HumanoidCPU 143 909 262ms 26 Aug 2024 819th KatieLG 🇬🇧 142 752 4ms 22 Aug 2024 820th KatieLG 🇬🇧 142 815 284ms 24 days ago 821st bac0id 142 912 258ms 25 Jun 2024 822nd Mabeloid 🇳🇴 142 914 278ms 17 Sep 2024 823rd KatieLG-Transpiler 🇬🇧 142 916 265ms 16 Aug 2024 824th Languag3 141 920 263ms 21 Oct 2024 825th Stockoh 🇫🇷 141 3,214 2ms 22 Apr 2024 826th kkoenig 140 929 265ms 13 Sep 2024 827th KatieLG 🇬🇧 138 818 198ms 24 days ago 828th MeWhenI 🇻🇦 137 866 3ms 13 Apr 2024 828th Yewzir 🇧🇪 137 866 3ms 13 Apr 2024 828th HumanoidCPU 137 866 3ms 13 Apr 2024 828th BREMAUCY 🇫🇷 137 866 3ms 16 Apr 2024 828th bac0id 137 866 3ms 25 Jun 2024 828th Shanethegamer 🇺🇸 137 866 3ms 6 Dec 2024 828th CaedenHarper 🇨🇦 137 866 3ms 20 Jan 2025 828th dokutan 137 866 3ms 23 Feb 2025 836th KatieLG 🇬🇧 136 830 65ms 24 days ago 837th zakariamouhid 136 868 3ms 13 Apr 2024 838th KatieLG 🇬🇧 136 871 3ms 13 Apr 2024 838th KatieLG-Transpiler 🇬🇧 136 871 3ms 16 Aug 2024 838th Mabeloid 🇳🇴 136 871 3ms 17 Sep 2024 841st dokutan 135 816 8ms 10 Sep 2025 842nd HumanoidCPU 134 867 120ms 13 Apr 2024 842nd Yewzir 🇧🇪 134 867 119ms 13 Apr 2024 842nd bac0id 134 867 120ms 26 Jun 2024 842nd Mabeloid 🇳🇴 134 867 137ms 17 Sep 2024 842nd CaedenHarper 🇨🇦 134 867 114ms 22 Jan 2025 847th dokutan 132 757 2ms 2 Aug 2024 848th dokutan 132 821 42ms 9 Oct 2024 849th CaedenHarper 🇨🇦 132 869 3ms 22 Jan 2025 850th MeWhenI 🇻🇦 132 870 3ms 13 Apr 2024 850th HumanoidCPU 132 870 4ms 13 Apr 2024 850th KatieLG 🇬🇧 132 870 3ms 13 Apr 2024 850th Yewzir 🇧🇪 132 870 4ms 13 Apr 2024 850th bac0id 132 870 4ms 25 Jun 2024 850th KatieLG-Transpiler 🇬🇧 132 870 3ms 16 Aug 2024 850th Mabeloid 🇳🇴 132 870 3ms 17 Sep 2024 850th gigaprofisi 🇺🇸 132 870 3ms 6 Nov 2025 858th dokutan 131 847 481ms 7 Nov 2025 859th dokutan 130 800 129ms 3 Feb 2025 860th KatieLG 🇬🇧 130 835 417ms 24 days ago 861st MeWhenI 🇻🇦 130 870 64ms 13 Apr 2024 861st HumanoidCPU 130 870 67ms 13 Apr 2024 861st Yewzir 🇧🇪 130 870 64ms 13 Apr 2024 861st bac0id 130 870 69ms 25 Jun 2024 861st KatieLG-Transpiler 🇬🇧 130 870 78ms 16 Aug 2024 861st Mabeloid 🇳🇴 130 870 65ms 17 Sep 2024 861st xyangst 130 870 67ms 3 Oct 2024 861st CaedenHarper 🇨🇦 130 870 72ms 20 Jan 2025 869th dokutan 129 782 1ms 6 Oct 2024 870th KatieLG 🇬🇧 129 852 10ms 24 days ago 871st MarkShcerbakov 128 780 385ms 14 Aug 2024 872nd KatieLG 🇬🇧 128 826 105ms 24 days ago 873rd HumanoidCPU 128 882 110ms 13 Apr 2024 873rd Yewzir 🇧🇪 128 882 111ms 13 Apr 2024 873rd dokutan 128 882 108ms 14 Apr 2024 873rd RealAMC 🇳🇿 128 882 111ms 24 Apr 2024 873rd bac0id 128 882 106ms 26 Jun 2024 873rd JGDoerrer 128 882 109ms 17 Jul 2024 873rd Mabeloid 🇳🇴 128 882 110ms 17 Sep 2024 873rd CaedenHarper 🇨🇦 128 882 138ms 22 Jan 2025 First Prev 801–880 of 1,429 Next Last