The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Abundant Numbers (Long) 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 801st AlephSquirrel 843 60 431ms 21 Jan 2024 801st b-illy 🇬🇧 843 60 496ms 7 Sep 2024 801st HumanoidCPU 843 60 390ms 9 Sep 2024 801st lifthrasiir 🇰🇷 843 60 368ms 2 Dec 2024 801st JunkIce 843 60 410ms 3 Dec 2024 801st commandblockguy 🇺🇸 843 60 394ms 1 Sep 2025 807th DialFrost 🇸🇬 843 66 607ms 16 Dec 2024 808th primo-ppcg 🇹🇭 843 71 2ms 20 Nov 2022 808th DialFrost 🇸🇬 843 71 3ms 3 days ago 810th ovs-code 🇩🇪 843 80 1,515ms 4 Jul 2024 811th Shanethegamer 🇺🇸 842 68 88ms 22 Nov 2024 811th primo-ppcg 🇹🇭 842 68 79ms 5 Apr 2025 813th DialFrost 🇸🇬 842 202 721ms 13 Aug 2025 814th Shanethegamer 🇺🇸 841 91 43ms 13 Feb 2025 814th edsrzf 🇳🇿 841 91 49ms 15 Apr 2025 816th janbehrens 🇩🇪 841 95 59ms 20 Nov 2022 816th Shanethegamer 🇺🇸 841 95 60ms 2 Dec 2022 816th Betuaredead 841 95 73ms 6 Jan 2023 816th MateuszPietrzak 🇵🇱 841 95 87ms 30 Nov 2023 816th oceko 841 95 76ms 19 Feb 2024 816th dokutan 841 95 63ms 31 Jan 2025 816th HHHMGK 841 95 90ms 2 Oct 2025 816th esobolev321 841 95 481ms 11 Nov 2025 824th pardouin 🇫🇷 840 42 536ms 15 Sep 2024 825th Andriamanitra 🇫🇮 840 48 926ms 28 Jul 2023 826th DialFrost 🇸🇬 840 67 43ms 29 Oct 2024 826th SirBogman 🇺🇸 840 67 46ms 29 Oct 2024 828th MeWhenI 🇻🇦 840 68 228ms 22 Nov 2022 828th PPKFS 840 68 203ms 10 Dec 2022 830th ovs-code 🇩🇪 840 78 55ms 11 Dec 2023 831st ChrisTheisen 840 89 344ms 12 Dec 2022 831st yannikHoeflich 840 89 369ms 12 Dec 2022 831st astdefu 840 89 375ms 13 Dec 2022 831st bac0id 840 89 340ms 26 Sep 2023 831st KatieLG 🇬🇧 840 89 362ms 28 Apr 2024 831st albanian-laundromat 840 89 385ms 30 Sep 2025 837th Betuaredead 840 119 273ms 7 Jan 2023 838th janbehrens 🇩🇪 839 116 27ms 19 Nov 2022 839th xnor-gate 838 64 52ms 21 Nov 2022 839th sisyphus-ppcg 🇦🇺 838 64 65ms 23 Nov 2022 839th thehylian 838 64 50ms 1 Jan 2023 839th prplz 🇦🇺 838 64 65ms 3 Jan 2023 839th AlephSquirrel 838 64 50ms 22 Jan 2023 839th lynn 838 64 68ms 30 Jan 2023 839th nwellnhof 🇩🇪 838 64 65ms 11 Mar 2023 839th FortuiteMan 🇫🇷 838 64 37ms 23 Apr 2023 839th bac0id 838 64 56ms 26 Sep 2023 839th ovs-code 🇩🇪 838 64 65ms 2 Jan 2024 839th gallium-gonzollium 838 64 65ms 25 Aug 2024 839th MeWhenI 🇻🇦 838 64 65ms 27 Oct 2024 839th mrondon8 838 64 71ms 2 Dec 2024 839th nullie 838 64 66ms 2 Dec 2024 839th tjwrenn 838 64 66ms 6 Dec 2024 839th 4atj 838 64 63ms 30 Jun 2025 839th bizy-coder 838 64 49ms 8 days ago 839th zacjl 838 64 64ms 6 days ago 839th Seek64 🇩🇪 838 64 70ms 5 days ago 858th DialFrost 🇸🇬 838 73 184ms 3 Jun 2024 859th GrayJoKing 🇦🇺 838 80 99ms 19 Nov 2022 860th Steffan153 🇫🇮 838 95 45ms 5 Oct 2023 861st DialFrost 🇸🇬 837 151 1,579ms 13 Sep 2025 861st dokutan 837 151 1,707ms 2 Nov 2025 863rd KatieLG 🇬🇧 836 49 50ms 10 Jan 2023 863rd Haksell 🇦🇶 836 49 67ms 22 Feb 2023 863rd Andriamanitra 🇫🇮 836 49 70ms 26 Apr 2023 863rd yzhs 🇩🇪 836 49 52ms 21 Jun 2023 863rd aaronze 🇦🇺 836 49 58ms 17 Sep 2023 863rd dokutan 836 49 61ms 5 Sep 2024 863rd edsrzf 🇳🇿 836 49 67ms 21 Jan 2025 863rd csharpython 836 49 58ms 23 Jul 2025 863rd snoozingnewt 🇨🇦 836 49 72ms 9 Oct 2025 872nd StHagel 836 88 123ms 25 May 2023 872nd malworthy 836 88 125ms 30 Oct 2023 874th Betuaredead 836 91 443ms 7 Jan 2023 874th dokutan 836 91 446ms 27 Sep 2025 876th h3ra993huskp 🇯🇵 836 94 428ms 18 days ago 877th MeWhenI 🇻🇦 835 146 457ms 28 Mar 2025 878th saito-ta 🇯🇵 834 42 79ms 13 Aug 2025 879th NickTheEASDude 🇺🇸 834 78 35ms 8 Aug 2024 880th SirBogman 🇺🇸 833 24 848ms 20 Nov 2022 First Prev 801–880 of 2,610 Next Last