The Calendar hole will go live in approximately 13 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 480th aDwarfNamedUrist 844 81 127ms 6 Dec 2022 482nd DialFrost 🇸🇬 843 67 543ms 9 Jun 2024 483rd primo-ppcg 🇹🇭 843 90 15ms 6 Feb 2022 484th Steffan153 🇫🇮 843 117 99ms 8 Apr 2023 485th DialFrost 🇸🇬 843 123 4,163ms 1 Mar 2025 486th MeWhenI 🇻🇦 843 234 1,705ms 7 Nov 2025 487th Shanethegamer 🇺🇸 842 67 4ms 17 Aug 2024 488th SirBogman 🇺🇸 841 56 170ms 29 Nov 2021 488th Natanaelel 🇸🇪 841 56 245ms 9 Dec 2021 490th elgan65536 841 142 226ms 6 Jul 2024 491st primo-ppcg 🇹🇭 840 56 186ms 15 Sep 2020 491st JayXon 🇺🇸 840 56 119ms 9 Jan 2022 493rd GrayJoKing 🇦🇺 839 121 56ms 10 Mar 2023 494th nwellnhof 🇩🇪 839 126 2ms 22 Aug 2020 495th Yax42 🇫🇷 839 135 389ms 13 Oct 2025 496th primo-ppcg 🇹🇭 836 109 9ms 5 Feb 2025 497th abailey2020 🇺🇸 835 85 9ms 10 Dec 2020 497th Secozzi 835 85 14ms 21 Mar 2021 497th mokymok 🇺🇸 835 85 10ms 22 Jul 2021 497th tkr-sh 🇰🇵 835 85 83ms 29 Apr 2022 497th 2011-Chan-Ethan 835 85 11ms 19 Jul 2023 497th jtaxen 835 85 11ms 29 Apr 2024 497th cros107 🇦🇺 835 85 16ms 11 Jul 2024 497th hiichbindermax 835 85 12ms 17 Sep 2024 497th RaBa21 🇭🇺 835 85 83ms 17 Jul 2025 497th wuduculfre 835 85 9ms 22 Jul 2025 507th ovs-code 🇩🇪 835 245 487ms 25 Jan 2025 508th RobertHoeh 833 82 229ms 1 Feb 2024 508th YAJUE114514 833 82 117ms 15 Jul 2025 510th m-tkach 🇺🇦 832 127 2ms 30 Aug 2023 511th dcgjb 831 68 257ms 3 May 2024 512th primo-ppcg 🇹🇭 831 179 268ms 22 Aug 2020 513th zacjl 830 42 5ms 2 Nov 2025 514th lynn 830 54 988ms 13 Apr 2021 515th albanian-laundromat 829 247 512ms 20 Oct 2025 516th primo-ppcg 🇹🇭 828 116 131ms 17 Aug 2021 517th ovs-code 🇩🇪 826 57 176ms 27 May 2024 518th sk- 826 86 12ms 11 Sep 2020 518th Loag 826 86 11ms 14 Nov 2021 518th Re-Adventures 🇮🇳 826 86 25ms 1 Dec 2021 518th Irratix 🇳🇱 826 86 12ms 16 Apr 2022 518th QuincyNash 🇺🇸 826 86 10ms 6 Dec 2022 518th msbranicky 826 86 10ms 23 Jul 2023 518th aalec 826 86 15ms 25 Apr 2024 525th dokutan 826 101 15ms 8 Jun 2024 526th rowan-OzRunways 826 137 205ms 26 Jan 2021 526th kaascevich 826 137 235ms 9 Jul 2025 528th nwellnhof 🇩🇪 825 57 46ms 28 Oct 2021 528th anter69 🇭🇺 825 57 49ms 5 Apr 2022 528th Steffan153 🇫🇮 825 57 42ms 25 Mar 2023 528th GrayJoKing 🇦🇺 825 57 53ms 30 Nov 2023 528th DialFrost 🇸🇬 825 57 155ms 1 Jun 2024 528th sean-niemann 🇺🇸 825 57 51ms 4 Aug 2025 534th AdrienHache 🇫🇷 825 88 51ms 6 Oct 2024 535th andersk 🇺🇸 824 145 237ms 25 Oct 2022 536th Natanaelel 🇸🇪 823 68 2ms 15 Jan 2024 537th iczelia 🇩🇪 823 83 117ms 19 Oct 2025 538th commandblockguy 🇺🇸 822 80 510ms 1 Sep 2025 539th h3ra993huskp 🇯🇵 822 149 565ms 18 days ago 540th dvargas46 🇺🇸 820 74 6ms 25 Feb 2023 541st SirBogman 🇺🇸 819 69 242ms 2 Jan 2022 542nd primo-ppcg 🇹🇭 819 129 3ms 21 Aug 2020 543rd ovs-code 🇩🇪 818 118 4ms 2 Feb 2023 544th GolfingSuccess 🇬🇷 818 133 194ms 21 Sep 2025 545th emgordon154 818 146 227ms 14 Mar 2025 546th m-tkach 🇺🇦 817 82 10ms 30 Aug 2023 546th DialFrost 🇸🇬 817 82 14ms 6 Nov 2025 548th jiaminglimjm 🇲🇾 816 87 9ms 12 Sep 2020 548th Pena86 816 87 10ms 19 Feb 2021 548th osmith93 816 87 10ms 31 Jul 2021 548th roytu 816 87 12ms 30 May 2022 548th fkantelberg 816 87 10ms 18 Jul 2023 548th robin-scragg 816 87 11ms 23 Sep 2025 548th iczelia 🇩🇪 816 87 10ms 19 Oct 2025 548th Emutis 🇱🇹 816 87 10ms 2 Nov 2025 548th madeforlosers 816 87 612ms 13 Nov 2025 557th ovs-code 🇩🇪 814 120 467ms 29 Nov 2022 558th boxjelly 813 84 118ms 6 Jan 2021 558th yzhs 🇩🇪 813 84 121ms 24 Jul 2021 558th snoozingnewt 🇨🇦 813 84 122ms 13 Oct 2025 First Prev 481–560 of 1,861 Next Last