The Calendar hole will go live in approximately 11 days. Why not try and solve it ahead of time?
Lucky 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 475th hiichbindermax 690 76 11ms 22 Jun 2024 475th JunkIce 690 76 11ms 24 Nov 2024 475th Flekay 🇩🇪 690 76 13ms 10 Jul 2025 475th csharpython 690 76 10ms 28 Aug 2025 475th qpwoeirut 690 76 11ms 19 Sep 2025 486th emgordon154 690 122 223ms 12 Dec 2024 487th akshatj27 🇦🇶 689 83 23ms 2 Mar 2022 487th AlephSquirrel 689 83 13ms 15 Feb 2023 489th MeWhenI 🇻🇦 689 132 144ms 22 Jul 2024 490th AdrienHache 🇫🇷 688 116 428ms 13 Aug 2025 491st emgordon154 688 230 1,700ms 9 Jun 2025 492nd AlephSquirrel 684 73 405ms 16 Jan 2024 493rd janbehrens 🇩🇪 683 127 76ms 22 Dec 2023 494th Shanethegamer 🇺🇸 682 72 408ms 1 Mar 2022 495th DialFrost 🇸🇬 682 112 1,272ms 10 May 2025 496th DialFrost 🇸🇬 682 124 57ms 6 Dec 2024 497th DialFrost 🇸🇬 681 48 37ms 28 Jan 2023 497th neel11235813 681 48 34ms 18 Feb 2023 499th Anonymousellama21 681 77 12ms 15 Jun 2022 499th jakobkordez 🇸🇮 681 77 11ms 7 Nov 2022 499th betaveros 681 77 11ms 1 Jan 2023 499th quimey 681 77 10ms 15 Mar 2023 499th elgan65536 681 77 10ms 30 Mar 2024 499th thienudomsrirungruang 681 77 30ms 7 May 2024 499th MeWhenI 🇻🇦 681 77 136ms 3 Aug 2024 506th janbehrens 🇩🇪 681 84 22ms 1 Mar 2022 506th tayloia 🇬🇧 681 84 20ms 9 May 2023 506th lukegustafson 🇺🇸 681 84 94ms 15 Sep 2024 509th stefangimmillaro 681 110 41ms 4 Nov 2022 510th MeWhenI 🇻🇦 680 82 78ms 11 Oct 2023 511th stefangimmillaro 679 108 4,070ms 10 Nov 2024 512th stefangimmillaro 679 134 131ms 26 Oct 2023 512th mousetail 🇳🇱 679 134 153ms 26 Sep 2025 514th error256 678 92 1,213ms 13 Aug 2025 515th edsrzf 🇳🇿 678 105 159ms 29 May 2025 516th DialFrost 🇸🇬 677 91 108ms 2 May 2025 517th DaCuteRaccoon 677 125 58ms 1 Dec 2022 517th CaedenHarper 🇨🇦 677 125 57ms 27 Jan 2025 519th c0d3-4-F00d 🇩🇪 676 102 8ms 5 Mar 2022 519th janbehrens 🇩🇪 676 102 8ms 16 May 2023 519th CaedenHarper 🇨🇦 676 102 9ms 27 Jan 2025 519th iczelia 🇩🇪 676 102 8ms 17 Oct 2025 523rd Irratix 🇳🇱 675 66 77ms 9 Mar 2022 524th KrausRaus 🇺🇸 673 85 26ms 2 Mar 2022 525th knutae 🇳🇴 672 78 14ms 9 Mar 2022 525th jhpaques 🇫🇷 672 78 11ms 29 Jul 2022 525th marcin7Cd 672 78 12ms 2 Sep 2022 525th hellwue 672 78 10ms 28 Apr 2023 525th davecame 672 78 11ms 7 Nov 2023 530th c0d3-4-F00d 🇩🇪 672 126 57ms 5 Mar 2022 530th snoozingnewt 🇨🇦 672 126 57ms 1 Sep 2024 532nd MeWhenI 🇻🇦 670 92 110ms 24 Feb 2023 533rd m-tkach 🇺🇦 670 103 12ms 30 Mar 2022 534th Yax42 🇫🇷 670 119 486ms 27 Apr 2025 535th Shanethegamer 🇺🇸 669 83 1,170ms 7 Jun 2022 536th tuffnatty 🇩🇪 668 99 145ms 19 Jul 2023 537th tailorspy 667 130 76ms 22 Aug 2024 538th CLOStrophobic 🇮🇹 666 127 2,710ms 4 Feb 2025 539th dillon-duncando 665 70 102ms 10 Mar 2024 539th snoozingnewt 🇨🇦 665 70 178ms 19 Oct 2025 541st BambooleanLogic 🇸🇪 665 86 43ms 15 Nov 2022 541st Maznek 665 86 21ms 11 Dec 2023 543rd Lydxn 🇨🇦 665 138 459ms 5 Mar 2022 544th ehulinsky 🇺🇸 664 79 30ms 10 May 2023 544th SB-945 664 79 11ms 3 Jul 2023 544th dokutan 664 79 11ms 23 Feb 2025 544th robin-scragg 664 79 11ms 4 Aug 2025 544th luuumine 🇫🇷 664 79 10ms 26 Oct 2025 549th edsrzf 🇳🇿 661 101 91ms 1 Sep 2025 550th Shanethegamer 🇺🇸 661 218 446ms 28 Apr 2025 551st primo-ppcg 🇹🇭 660 139 397ms 4 Mar 2022 552nd MeWhenI 🇻🇦 658 103 99ms 14 Oct 2022 553rd JunkIce 657 76 528ms 3 Dec 2024 554th martinnorling 🇸🇪 656 80 11ms 2 Mar 2022 554th logvp 656 80 10ms 22 Nov 2024 554th kistlerf 🇨🇭 656 80 11ms 30 May 2025 557th albanian-laundromat 655 171 619ms 16 days ago 558th KatieLG 🇬🇧 654 74 915ms 29 Aug 2024 558th emgordon154 654 74 1,044ms 13 Nov 2024 560th CatsAreFluffy 654 85 55ms 31 Jan 2023 First Prev 481–560 of 1,540 Next Last