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 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 480th edsrzf 🇳🇿 796 97 38ms 13 Apr 2025 482nd detrumi 🇳🇱 796 150 211ms 21 Oct 2020 483rd lynn 795 54 988ms 13 Apr 2021 484th scpchicken 🇵🇼 795 76 9ms 27 Mar 2022 484th inverseLorentz 🇦🇺 795 76 9ms 11 Mar 2024 486th Yewzir 🇧🇪 795 248 2,507ms 14 Nov 2025 487th jared-hughes 794 34 32ms 17 Oct 2021 487th bstrat 794 34 33ms 4 Mar 2023 487th 4hg 🇺🇸 794 34 33ms 26 Jul 2023 490th rvdnieuwendijk 🇳🇱 794 71 1,949ms 30 Jul 2020 491st HumanEquivalentUnit 794 95 13ms 16 Jan 2022 492nd orthoplex 🇨🇽 794 122 4ms 25 Jun 2023 493rd SirBogman 🇺🇸 793 260 11ms 23 Nov 2022 494th inventshah 792 157 2,709ms 15 Jun 2022 495th SirBogman 🇺🇸 789 44 3ms 30 Nov 2022 496th albanian-laundromat 789 101 4ms 6 Sep 2025 497th btnlq 788 123 2ms 20 Mar 2021 498th Steffan153 🇫🇮 788 147 30ms 29 Aug 2024 499th emgordon154 788 250 1,690ms 16 Sep 2025 500th Ethernet3 🇳🇱 787 158 2,827ms 11 Mar 2022 501st DialFrost 🇸🇬 787 260 390ms 3 Mar 2025 502nd primo-ppcg 🇹🇭 786 175 75ms 25 Jun 2022 503rd Steffan153 🇫🇮 785 54 42ms 29 Aug 2024 503rd sean-niemann 🇺🇸 785 54 42ms 12 Oct 2025 505th yuriy-chervinka 785 77 10ms 30 Mar 2021 505th Fishron 785 77 13ms 19 Oct 2021 505th fredrik-bakke 🇳🇴 785 77 9ms 2 Oct 2022 505th b10011 🇫🇮 785 77 9ms 16 Jan 2023 505th edsrzf 🇳🇿 785 77 9ms 13 Apr 2025 510th bac0id 785 144 395ms 30 Jun 2024 511th chordowl 785 152 212ms 17 Mar 2021 512th Apataras 785 156 504ms 7 Oct 2025 512th kmathis22 785 156 444ms 15 Oct 2025 514th ReidZ3 🇺🇸 784 87 120ms 5 Dec 2020 514th Z-snails 784 87 118ms 2 Mar 2023 516th lynn 783 148 29ms 17 Oct 2023 517th ovs-code 🇩🇪 781 120 142ms 28 Nov 2022 518th pschmid0 🇺🇸 780 90 4ms 7 Aug 2022 519th sean-niemann 🇺🇸 780 125 473ms 20 Sep 2025 520th rifatx 780 145 454ms 9 Jul 2024 521st stefangimmillaro 780 153 3,268ms 17 Oct 2023 521st inverseLorentz 🇦🇺 780 153 227ms 22 Apr 2024 523rd ScottHamper 780 157 474ms 18 days ago 524th ovs-code 🇩🇪 779 79 1,010ms 8 Oct 2023 525th MeWhenI 🇻🇦 779 86 11ms 1 Jul 2023 526th ovs-code 🇩🇪 778 57 176ms 27 May 2024 527th bizy-coder 778 74 506ms 15 Jan 2024 527th annaproxy 778 74 510ms 21 Jan 2024 527th snoozingnewt 🇨🇦 778 74 395ms 11 Feb 2024 530th prplz 🇦🇺 778 149 29ms 3 Oct 2023 531st primo-ppcg 🇹🇭 776 111 44ms 30 May 2025 532nd itiievskyi 🇺🇦 775 78 14ms 28 Jul 2020 532nd bastienvoirin 🇫🇷 775 78 9ms 30 Nov 2020 532nd RDShah 775 78 9ms 15 Apr 2021 532nd hellwue 775 78 10ms 25 Feb 2022 532nd CedricGebistorf 775 78 11ms 12 Mar 2022 532nd MaxElf999 775 78 10ms 23 Sep 2022 532nd randolchance 775 78 10ms 5 Mar 2023 532nd tobeannouncd 775 78 10ms 19 Sep 2023 532nd logvp 775 78 9ms 27 Dec 2023 532nd croc54 775 78 10ms 28 Nov 2024 542nd m-tkach 🇺🇦 774 103 4ms 31 Jan 2024 543rd DialFrost 🇸🇬 774 126 369ms 10 Nov 2025 544th namcartoon06 772 161 2,720ms 30 Jun 2023 545th yzhs 🇩🇪 771 35 34ms 20 Aug 2020 545th ashtraypettingzoo 🇺🇸 771 35 33ms 17 Feb 2023 545th codereport 🇨🇦 771 35 34ms 1 Jun 2024 548th JayXon 🇺🇸 771 55 316ms 9 Jan 2022 548th MeWhenI 🇻🇦 771 55 46ms 16 Aug 2022 548th anter69 🇭🇺 771 55 36ms 25 Jan 2023 548th ovs-code 🇩🇪 771 55 54ms 22 Jan 2025 552nd GrayJoKing 🇦🇺 771 73 5ms 16 Aug 2024 553rd ovs-code 🇩🇪 770 155 240ms 21 Apr 2025 554th rucin93 🇵🇱 769 75 467ms 19 days ago 555th LucaArgentiUCF 🇮🇹 769 112 41ms 14 Feb 2021 555th SirBogman 🇺🇸 769 112 39ms 4 Nov 2024 557th CaedenHarper 🇨🇦 769 147 393ms 21 Oct 2025 558th sean-niemann 🇺🇸 768 79 4ms 30 Oct 2022 558th lacrosse 768 79 71ms 21 days ago 560th alemelis 767 56 551ms 12 Apr 2023 First Prev 481–560 of 1,844 Next Last