The Calendar hole will go live in approximately 10 days. Why not try and solve it ahead of time?
Leyland Numbers 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 321st MeWhenI 🇻🇦 888 138 432ms 7 Nov 2025 322nd TobyBoyne 🇬🇧 887 80 10ms 31 Dec 2020 322nd BrenSchaap 887 80 10ms 21 Oct 2021 322nd NicoAdams 887 80 10ms 1 Dec 2021 322nd SB-945 887 80 10ms 19 Apr 2024 322nd Languag3 887 80 9ms 28 Feb 2025 327th Steffan153 🇫🇮 887 84 4ms 20 Aug 2023 327th Lydxn 🇨🇦 887 84 4ms 31 Aug 2023 327th btnlq 887 84 5ms 21 Oct 2023 330th GrayJoKing 🇦🇺 886 109 8ms 10 Mar 2023 330th clockworknazo 886 109 24ms 10 Mar 2023 332nd m-tkach 🇺🇦 886 131 301ms 22 Jan 2024 333rd stefangimmillaro 885 168 4,861ms 5 Dec 2024 334th canissimia 🇦🇶 885 555 19ms 23 Feb 2023 335th stefangimmillaro 884 128 208ms 3 Mar 2023 335th primo-ppcg 🇹🇭 884 128 375ms 10 Apr 2025 337th 386asm 🇺🇸 883 115 40ms 4 May 2023 338th MeWhenI 🇻🇦 883 125 5ms 10 Oct 2023 338th GolfingSuccess 🇬🇷 883 125 14ms 23 Oct 2023 340th btnlq 882 69 1,103ms 6 Nov 2022 341st KasperKivimaeki 🇫🇮 882 141 2,834ms 19 Nov 2025 342nd Kacarott 🇦🇺 881 70 178ms 13 Sep 2024 342nd sean-niemann 🇺🇸 881 70 92ms 23 Apr 2025 342nd pardouin 🇫🇷 881 70 1,137ms 28 Jul 2025 345th MarcMush 🇫🇷 879 51 1,097ms 5 Jul 2021 346th sean-niemann 🇺🇸 879 80 1,181ms 3 Jul 2023 347th edsrzf 🇳🇿 879 109 42ms 17 Feb 2025 348th Dazza314 🇬🇧 877 81 14ms 3 Nov 2020 348th AkashTandon167 877 81 10ms 15 Nov 2020 348th cbondurant 877 81 12ms 10 May 2021 348th jacklynnepenick 877 81 9ms 17 Aug 2021 348th knutae 🇳🇴 877 81 10ms 6 Dec 2021 348th FlorianCassayre 🇫🇷 877 81 11ms 26 Oct 2022 348th CutSandstone 877 81 9ms 8 Jul 2024 348th keelimeguy 🇺🇸 877 81 10ms 7 May 2025 348th Pyroan 877 81 10ms 13 May 2025 348th BrunoVisnadi 🇧🇷 877 81 10ms 20 Oct 2025 358th MeWhenI 🇻🇦 877 108 428ms 6 Mar 2025 359th emgordon154 877 117 102ms 16 days ago 360th DialFrost 🇸🇬 876 69 87ms 1 Nov 2024 361st inverseLorentz 🇦🇺 876 78 124ms 9 Mar 2024 362nd kg583 🇺🇸 876 104 93ms 28 Dec 2024 362nd CLOStrophobic 🇮🇹 876 104 7ms 6 Feb 2025 362nd edsrzf 🇳🇿 876 104 10ms 13 Apr 2025 365th ovs-code 🇩🇪 876 126 24ms 10 Mar 2024 366th SirBogman 🇺🇸 875 32 60ms 30 Nov 2022 367th yzhs 🇩🇪 875 35 34ms 20 Aug 2020 367th ashtraypettingzoo 🇺🇸 875 35 33ms 17 Feb 2023 367th codereport 🇨🇦 875 35 34ms 1 Jun 2024 370th nwellnhof 🇩🇪 874 64 3ms 28 Oct 2021 371st ovs-code 🇩🇪 873 121 3ms 29 May 2024 372nd MeWhenI 🇻🇦 872 99 43ms 16 May 2023 373rd kumavale 872 137 228ms 27 days ago 374th kg583 🇺🇸 871 110 47ms 17 Jun 2025 375th MeWhenI 🇻🇦 871 125 96ms 27 Dec 2024 375th GrayJoKing 🇦🇺 871 125 24ms 5 Feb 2025 377th DialFrost 🇸🇬 871 130 382ms 10 Nov 2025 378th DialFrost 🇸🇬 870 171 263ms 7 Nov 2025 378th JayXon 🇺🇸 870 171 267ms 27 days ago 380th Feniske 🇫🇷 869 65 1,473ms 25 Aug 2022 381st Bubbler-4 869 71 71ms 13 Sep 2023 382nd primo-ppcg 🇹🇭 867 86 4ms 4 Jul 2023 382nd GrayJoKing 🇦🇺 867 86 4ms 21 Aug 2023 384th canissimia 🇦🇶 867 276 1,559ms 22 May 2023 385th lukasthaler 866 82 12ms 11 Sep 2020 385th HumanEquivalentUnit 866 82 10ms 12 Oct 2020 385th stordev 866 82 611ms 26 Feb 2021 385th lemogne 866 82 9ms 10 Aug 2021 385th j-Ewan 866 82 13ms 11 Mar 2022 385th TheoKeller1 866 82 16ms 6 Jun 2023 385th jmerle 🇳🇱 866 82 17ms 11 Jul 2023 385th Andriamanitra 🇫🇮 866 82 9ms 26 Jul 2023 385th moustave 866 82 9ms 10 Jun 2025 385th dirckvdende 866 82 10ms 21 Jul 2025 395th Shanethegamer 🇺🇸 866 114 99ms 8 Apr 2023 396th acotis 866 138 210ms 14 Oct 2025 397th GrayJoKing 🇦🇺 866 145 71ms 30 Jul 2023 398th m-tkach 🇺🇦 866 159 309ms 1 Sep 2023 399th lifthrasiir 🇰🇷 866 352 11ms 19 Dec 2024 400th annaproxy 865 79 125ms 24 Jan 2022 First Prev 321–400 of 1,862 Next Last