The Calendar hole will go live in approximately 9 days. Why not try and solve it ahead of time?
Abundant 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 638th dokutan 830 73 7ms 9 May 2024 638th sean-niemann 🇺🇸 830 73 7ms 29 Apr 2025 638th DialFrost 🇸🇬 830 73 9ms 6 days ago 644th sisyphus-ppcg 🇦🇺 829 42 337ms 10 May 2023 645th sbrych 829 49 46ms 15 Apr 2020 645th proton 🇩🇪 829 49 45ms 1 Jun 2020 645th Waffle3z 829 49 40ms 9 Oct 2020 645th aaronze 🇦🇺 829 49 32ms 21 Sep 2023 645th snoozingnewt 🇨🇦 829 49 45ms 9 Oct 2025 650th pardouin 🇫🇷 829 57 429ms 27 Jun 2024 650th ovs-code 🇩🇪 829 57 133ms 4 Aug 2024 650th voytxt 🇨🇿 829 57 128ms 5 Aug 2024 650th emgordon154 829 57 121ms 15 Nov 2024 654th Shanethegamer 🇺🇸 826 89 104ms 15 Apr 2025 654th GolfingSuccess 🇬🇷 826 89 115ms 23 days ago 656th Eolu 825 84 124ms 25 Jan 2022 656th verticallity 825 84 127ms 7 Apr 2022 656th Re-Adventures 🇮🇳 825 84 124ms 9 Jun 2023 656th elgan65536 825 84 123ms 21 Sep 2023 656th drabart 🇵🇱 825 84 124ms 15 Dec 2023 656th Aurel300 🇨🇭 825 84 140ms 6 Jun 2024 656th wuzekai518 825 84 142ms 5 Aug 2024 656th edsrzf 🇳🇿 825 84 126ms 16 Nov 2024 656th luuumine 🇫🇷 825 84 123ms 18 Nov 2025 665th KasperKivimaeki 🇫🇮 825 89 441ms 21 days ago 666th mdsn 824 29 3ms 17 Sep 2023 666th fcjr 824 29 3ms 31 Aug 2025 668th emgordon154 824 51 10ms 6 Jun 2025 669th MeWhenI 🇻🇦 824 60 2ms 13 Nov 2022 669th retrohun 824 60 2ms 16 Aug 2025 671st stefangimmillaro 824 61 9ms 18 Feb 2021 671st The3gs 824 61 9ms 10 Oct 2022 671st bricknellj 824 61 9ms 24 Jan 2023 671st lynn 824 61 15ms 20 Oct 2023 671st prplz 🇦🇺 824 61 9ms 10 Nov 2023 671st jeff-at-tamer-dot-codes 🇺🇸 824 61 9ms 31 Mar 2024 671st neel11235813 824 61 10ms 1 Apr 2024 671st ArcticBeat05 824 61 9ms 19 Sep 2024 671st snoozingnewt 🇨🇦 824 61 9ms 14 Jan 2025 671st addmai 824 61 9ms 31 Jul 2025 671st bizy-coder 824 61 9ms 19 days ago 682nd seanleken 822 57 9ms 22 Nov 2019 682nd rambox11 822 57 10ms 24 Nov 2019 682nd elisherer 🇮🇱 822 57 9ms 3 Jan 2020 682nd NatNgs 822 57 9ms 8 Jan 2020 682nd cywong-amino 🇭🇰 822 57 9ms 19 May 2020 682nd daisy-lau 822 57 9ms 29 May 2020 682nd pomber 822 57 9ms 8 Jul 2020 682nd ToriTheChicken 822 57 9ms 24 Jul 2020 682nd itiievskyi 🇺🇦 822 57 10ms 7 Aug 2020 682nd janbehrens 🇩🇪 822 57 9ms 18 Sep 2020 682nd Re-Adventures 🇮🇳 822 57 9ms 23 Jan 2021 682nd neihousaigaai 822 57 9ms 8 May 2021 682nd Darrennchan8 822 57 9ms 26 Jul 2021 682nd olivermrose 🇺🇸 822 57 10ms 29 Aug 2021 682nd vang1ong7ang 822 57 10ms 29 Oct 2021 682nd BambooleanLogic 🇸🇪 822 57 9ms 3 Dec 2021 682nd Giga-Bowser 822 57 9ms 14 Dec 2021 682nd uttumuttu 🇫🇮 822 57 10ms 4 Jan 2022 682nd FlorianGoeth 822 57 9ms 15 Mar 2022 682nd fitzdotlol 🇺🇸 822 57 9ms 22 Mar 2022 682nd Shanethegamer 🇺🇸 822 57 9ms 28 Apr 2022 682nd GeorgeStechman 🇬🇧 822 57 10ms 23 May 2022 682nd coreynash 822 57 9ms 4 Nov 2022 682nd nstearns96 🇬🇧 822 57 9ms 28 Nov 2022 682nd GreenBeansAgainstVeganism 822 57 9ms 14 Jan 2023 682nd Yewzir 🇧🇪 822 57 9ms 16 Apr 2023 682nd ShiraJoseph 🇺🇸 822 57 9ms 21 Jul 2023 682nd raszpi 🇭🇺 822 57 9ms 2 Sep 2023 682nd stefangimmillaro 822 57 9ms 28 Sep 2023 682nd Davr1 🇨🇿 822 57 9ms 15 Oct 2023 682nd trinityy-7 822 57 10ms 18 Oct 2023 682nd dylanarmstrong 822 57 9ms 6 Dec 2023 682nd jbt 822 57 9ms 24 Dec 2023 682nd kordrun 822 57 9ms 3 Apr 2024 682nd ErikGXDev 822 57 9ms 26 Oct 2024 682nd alexsave 822 57 9ms 6 Nov 2024 682nd Andrey-Plotnikov 822 57 9ms 21 Jun 2025 682nd dokutan 822 57 9ms 16 Jul 2025 682nd snoozingnewt 🇨🇦 822 57 9ms 9 Oct 2025 First Prev 641–720 of 4,280 Next Last