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 chars. 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 Chars Time Submitted 641st olivermrose 🇺🇸 731 58 43ms 3 Oct 2021 641st stefangimmillaro 731 58 35ms 27 Oct 2021 641st SirBogman 🇺🇸 731 58 39ms 8 Jun 2022 641st sisyphus-ppcg 🇦🇺 731 58 46ms 11 Jul 2022 641st tatzyr 🇯🇵 731 58 56ms 24 Nov 2024 641st KatieLG 🇬🇧 731 58 33ms 2 Oct 2025 647th snoozingnewt 🇨🇦 731 77 6ms 13 Oct 2025 648th KrausRaus 🇺🇸 731 96 10ms 21 Dec 2021 649th annaproxy 730 155 349ms 1 Apr 2022 649th snoozingnewt 🇨🇦 730 155 396ms 13 Oct 2025 651st Andriamanitra 🇫🇮 728 59 584ms 26 Jul 2023 652nd bstrautin 728 83 11ms 27 Jul 2020 652nd neihousaigaai 728 83 9ms 8 May 2021 652nd commandblockguy 🇺🇸 728 83 14ms 5 Sep 2022 652nd glesnick 728 83 10ms 12 Oct 2022 652nd AbhilashaTandon 728 83 11ms 23 Nov 2022 652nd badboj40 728 83 10ms 27 Dec 2022 652nd Just4FunCoder 728 83 16ms 22 Mar 2023 652nd cingulataluke 728 83 12ms 28 Aug 2023 652nd levavft 728 83 13ms 26 Oct 2023 652nd Anonymousellama21 728 83 9ms 9 Aug 2024 652nd Andre3582 728 83 9ms 10 Oct 2025 663rd KrausRaus 🇺🇸 728 92 9ms 12 Nov 2020 663rd SadiinsoSnowfall 🇫🇷 728 92 9ms 19 Feb 2024 665th NewDefectus 🇮🇱 726 129 146ms 18 Feb 2021 666th jared-hughes 725 104 13ms 27 Nov 2021 667th inventshah 725 110 2ms 12 Sep 2022 668th perlebach 🇨🇿 724 143 3,690ms 10 Jun 2025 669th Aurel300 🇨🇭 723 165 206ms 20 Jun 2024 670th gjoacorp 🇬🇧 723 172 2,903ms 4 Aug 2025 671st Indivicivet 720 84 18ms 17 Oct 2021 671st Nigel-C 720 84 9ms 30 May 2022 671st OhmNomNom 720 84 10ms 14 Oct 2022 671st betaveros 720 84 9ms 31 Dec 2022 671st Lv0Sys 🇵🇱 720 84 10ms 18 days ago 676th BBoehm 🇩🇪 720 93 9ms 18 Feb 2021 676th helbling 🇨🇭 720 93 9ms 29 May 2024 678th tomh1012 720 157 396ms 5 Sep 2025 679th hiddicop 🇸🇪 719 59 48ms 29 Jan 2021 679th Shanethegamer 🇺🇸 719 59 46ms 16 Feb 2023 679th BREMAUCY 🇫🇷 719 59 40ms 21 May 2023 679th Natanaelel 🇸🇪 719 59 39ms 15 Jan 2024 679th snoozingnewt 🇨🇦 719 59 71ms 2 Oct 2025 684th Jacob385 719 80 4,063ms 9 Apr 2024 684th commandblockguy 🇺🇸 719 80 510ms 1 Sep 2025 686th albanian-laundromat 719 137 110ms 7 Nov 2025 687th KatieLG 🇬🇧 718 135 2ms 24 Sep 2021 687th emgordon154 718 135 3ms 21 Jun 2024 689th roupiq 🇵🇱 718 173 2,947ms 26 Feb 2024 690th emgordon154 716 86 1,019ms 29 Jun 2024 691st Shanethegamer 🇺🇸 716 158 419ms 9 Apr 2025 692nd primo-ppcg 🇹🇭 716 171 383ms 29 Aug 2020 693rd okaponta 715 167 231ms 11 Jan 2024 694th TaserTheFox 🇺🇸 714 79 275ms 1 Jun 2023 695th DialFrost 🇸🇬 714 85 11ms 7 Nov 2025 696th janbehrens 🇩🇪 712 85 13ms 29 Oct 2021 697th neihousaigaai 712 94 9ms 18 Apr 2021 697th junkondo-jp 712 94 9ms 8 Jun 2024 697th Yax42 🇫🇷 712 94 11ms 5 Sep 2025 700th HumanEquivalentUnit 711 38 32ms 12 Oct 2020 700th jared-hughes 711 38 71ms 2 Aug 2022 700th Natanaelel 🇸🇪 711 38 50ms 25 Feb 2023 703rd abailey2020 🇺🇸 711 85 9ms 10 Dec 2020 703rd Secozzi 711 85 14ms 21 Mar 2021 703rd tkr-sh 🇰🇵 711 85 83ms 29 Apr 2022 703rd jtaxen 711 85 11ms 29 Apr 2024 703rd cros107 🇦🇺 711 85 16ms 11 Jul 2024 703rd hiichbindermax 711 85 12ms 17 Sep 2024 703rd wuduculfre 711 85 9ms 22 Jul 2025 710th ertz1ertz 711 159 403ms 14 Aug 2024 711th stefangimmillaro 709 99 2,743ms 18 Oct 2023 712th emgordon154 709 109 8ms 10 Dec 2024 713th stefangimmillaro 709 139 2,255ms 18 Oct 2023 714th MeWhenI 🇻🇦 708 210 268ms 9 Feb 2023 715th Andriamanitra 🇫🇮 707 60 49ms 26 Jul 2023 715th olleicua 🇺🇸 707 60 48ms 23 Apr 2025 717th DialFrost 🇸🇬 707 137 2ms 9 Mar 2025 718th billings7 🇬🇧 707 160 414ms 22 May 2024 719th Betuaredead 706 176 2,838ms 13 Jan 2023 720th tayloia 🇬🇧 705 95 9ms 26 May 2022 First Prev 641–720 of 1,845 Next Last