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 480th h3ra993huskp 🇯🇵 605 180 442ms 24 days ago 482nd CaedenHarper 🇨🇦 603 165 357ms 21 Oct 2025 483rd HumanoidCPU 601 133 11ms 9 May 2025 483rd Ultra814 601 133 12ms 19 Aug 2025 485th albanian-laundromat 601 427 89ms 3 hours ago 486th elgan65536 598 182 380ms 15 Apr 2024 487th iczelia 🇩🇪 597 134 13ms 26 Sep 2025 487th alexsave 597 134 10ms 13 Nov 2025 489th TeodorDyakov 🇧🇬 597 142 2ms 31 Mar 2025 490th gjoacorp 🇬🇧 597 179 83ms 4 Aug 2025 491st CutSandstone 594 140 12ms 19 Jul 2024 492nd Shanethegamer 🇺🇸 594 285 496ms 29 Jan 2025 493rd MeWhenI 🇻🇦 593 187 464ms 17 Apr 2024 494th beergit 590 116 42ms 7 Aug 2024 495th commandblockguy 🇺🇸 590 141 67ms 13 Apr 2024 495th Pyroan 590 141 38ms 16 Apr 2025 495th CommandLeo 🇮🇹 590 141 22ms 19 Nov 2025 495th Bmrl7 590 141 25ms 2 days ago 499th msbranicky 589 148 14ms 18 Apr 2024 500th Chinay-Domitrix 🇺🇸 587 154 3,217ms 16 Apr 2025 501st msbranicky 587 217 44ms 20 Apr 2024 502nd IISResetMe 586 139 2,338ms 27 days ago 503rd sultan 585 170 387ms 15 Apr 2024 504th msbranicky 585 173 7ms 14 Apr 2024 505th acollett89 584 137 11ms 4 Aug 2025 506th m-tkach 🇺🇦 584 145 3ms 1 May 2024 507th RYNO8 582 143 66ms 14 Jun 2024 507th OllieBoyne 🇬🇧 582 143 21ms 5 Mar 2025 507th BREMAUCY 🇫🇷 582 143 708ms 24 Jul 2025 507th kistlerf 🇨🇭 582 143 12ms 8 Nov 2025 507th Emutis 🇱🇹 582 143 14ms 12 Nov 2025 512th lifthrasiir 🇰🇷 582 306 10ms 19 Dec 2024 513th stefangimmillaro 581 790 1ms 6 Nov 2025 514th jiaminglimjm 🇲🇾 578 144 11ms 6 Jul 2024 515th Andrey135296 574 145 52ms 9 Nov 2024 516th commandblockguy 🇺🇸 573 139 647ms 1 Sep 2025 517th MeWhenI 🇻🇦 572 189 41ms 31 Aug 2024 518th AarSeBail 572 198 160ms 29 Jun 2025 519th thisishowmymindworks 🇳🇴 571 140 21ms 27 Jun 2024 520th ThijsLuttikhuis 570 146 15ms 13 Apr 2024 520th SB-945 570 146 19ms 15 Apr 2024 520th mbittner20 570 146 13ms 30 Jun 2024 520th scpchicken 🇵🇼 570 146 15ms 31 Jul 2024 520th Babafaba 570 146 660ms 17 Nov 2025 525th emgordon154 569 149 2ms 2 Aug 2024 526th Shanethegamer 🇺🇸 568 188 404ms 13 Apr 2024 527th JOrE20 🇺🇸 566 147 10ms 17 days ago 528th Shanethegamer 🇺🇸 566 194 68ms 4 Oct 2024 529th RYNO8 565 150 2ms 14 Jun 2024 530th adoxography 561 122 41ms 27 Apr 2024 531st dokutan 561 142 625ms 16 Jun 2024 532nd gsprochette 558 149 19ms 21 Aug 2025 533rd Salutations45 555 144 10ms 17 Nov 2024 534th jtaxen 555 150 87ms 14 Apr 2024 535th dokutan 551 151 71ms 16 Jun 2024 535th EnTerr 551 151 21ms 16 Jun 2024 535th dirckvdende 551 151 22ms 23 Jul 2025 538th Babafaba 550 145 1,168ms 17 Nov 2025 539th xyangst 550 206 132ms 18 Oct 2024 540th agreegious 547 152 15ms 17 Nov 2024 541st ei14 545 196 69ms 8 May 2024 541st msbranicky 545 196 24ms 20 Jan 2025 543rd targrik 541 160 13ms 13 Aug 2025 544th shelerr 540 154 32ms 21 Aug 2025 544th mathieurodic 540 154 923ms 28 Oct 2025 546th HumanoidCPU 537 155 45ms 9 May 2025 546th WillowWispy 537 155 17ms 25 May 2025 548th zakariamouhid 535 162 6ms 13 Apr 2024 549th MeWhenI 🇻🇦 533 178 44ms 29 Apr 2025 550th msbranicky 532 170 3,076ms 7 Jan 2025 551st Shanethegamer 🇺🇸 532 862 1ms 13 Apr 2024 551st HumanoidCPU 532 862 1ms 13 Apr 2024 551st BREMAUCY 🇫🇷 532 862 1ms 16 Apr 2024 551st bac0id 532 862 1ms 26 Jun 2024 551st CaedenHarper 🇨🇦 532 862 1ms 22 Jan 2025 556th Yewzir 🇧🇪 531 863 1ms 13 Apr 2024 556th KatieLG-Transpiler 🇬🇧 531 863 1ms 16 Aug 2024 556th Mabeloid 🇳🇴 531 863 1ms 17 Sep 2024 559th luuumine 🇫🇷 530 157 17ms 23 days ago 560th HumanoidCPU 530 160 2ms 10 May 2025 First Prev 481–560 of 1,429 Next Last