The Calendar hole will go live in approximately 8 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 401st thehylian 749 70 36ms 2 Jan 2023 402nd ScottHamper 749 108 175ms 2 Mar 2022 403rd inventshah 748 116 59ms 1 May 2025 404th Natanaelel 🇸🇪 746 37 499ms 22 Jul 2023 405th Shanethegamer 🇺🇸 745 107 379ms 9 Apr 2025 406th Natanaelel 🇸🇪 742 44 39ms 11 Nov 2023 407th MeWhenI 🇻🇦 742 109 460ms 22 May 2022 407th Shanethegamer 🇺🇸 742 109 470ms 7 Jun 2022 409th marshallward 🇺🇸 741 101 89ms 8 Jul 2023 410th Frowny 739 71 11ms 1 Mar 2022 410th Eilonlif 🇮🇱 739 71 114ms 12 Mar 2023 412th MeWhenI 🇻🇦 735 92 50ms 10 Sep 2022 413th MeWhenI 🇻🇦 735 118 88ms 22 May 2022 414th Shanethegamer 🇺🇸 734 68 489ms 6 Sep 2024 415th stefangimmillaro 734 84 112ms 10 Jan 2023 416th YAJUE114514 734 86 277ms 30 Jul 2025 417th UnderKoen 🇳🇱 733 216 594ms 7 Feb 2024 418th MeWhenI 🇻🇦 732 74 44ms 4 Nov 2022 419th jared-hughes 731 61 52ms 9 Sep 2022 419th emgordon154 731 61 156ms 13 Nov 2024 421st bob-th 729 72 12ms 2 Aug 2024 422nd Shanethegamer 🇺🇸 728 116 46ms 30 Dec 2022 423rd Shanethegamer 🇺🇸 728 125 127ms 7 Jun 2022 424th SirBogman 🇺🇸 726 45 35ms 30 Aug 2022 425th Shanethegamer 🇺🇸 726 116 36ms 27 Sep 2024 426th Frowny 725 87 251ms 1 Mar 2022 426th annaproxy 725 87 225ms 2 Mar 2022 426th DaCuteRaccoon 725 87 341ms 1 Dec 2022 426th CaedenHarper 🇨🇦 725 87 338ms 27 Jan 2025 430th snoozingnewt 🇨🇦 724 69 431ms 15 Oct 2025 431st Irratix 🇳🇱 724 79 19ms 1 Mar 2022 432nd Shanethegamer 🇺🇸 724 111 40ms 14 Jun 2022 433rd pardouin 🇫🇷 722 67 1,139ms 29 Jul 2025 434th Feniske 🇫🇷 720 70 3,145ms 3 Nov 2023 435th NewDefectus 🇮🇱 719 73 57ms 29 Apr 2022 435th ZakkkkAttackkkk 🇵🇭 719 73 1,139ms 31 Jul 2022 435th AlephSquirrel 719 73 11ms 28 Jan 2023 435th fourth-bit 719 73 11ms 11 Jul 2023 435th neihousaigaai 719 73 35ms 22 Oct 2024 440th inventshah 719 96 4ms 1 May 2025 441st ovs-code 🇩🇪 718 73 133ms 3 Aug 2024 442nd stefangimmillaro 718 156 284ms 22 Jun 2023 443rd MeWhenI 🇻🇦 712 68 935ms 22 May 2022 444th JohandeRuiter 🇳🇱 711 97 15ms 12 Nov 2023 445th MeWhenI 🇻🇦 710 94 168ms 28 Feb 2025 446th minhtrancccp 709 74 11ms 11 Jan 2024 447th jared-hughes 709 75 1,716ms 17 Jul 2022 448th lifthrasiir 🇰🇷 708 39 3ms 29 Nov 2024 449th OhmNomNom 708 63 81ms 1 Nov 2022 449th KatieLG 🇬🇧 708 63 82ms 11 Oct 2025 451st didion0 🇺🇸 706 81 29ms 1 Mar 2022 451st jbt 706 81 259ms 28 Dec 2023 453rd CaedenHarper 🇨🇦 706 106 85ms 27 Jan 2025 453rd snoozingnewt 🇨🇦 706 106 132ms 5 Oct 2025 455th MeWhenI 🇻🇦 705 114 41ms 20 Jun 2022 456th Shanethegamer 🇺🇸 702 95 29ms 29 Apr 2025 457th MeWhenI 🇻🇦 702 211 1,895ms 7 Nov 2025 458th stefangimmillaro 700 114 401ms 11 Aug 2023 459th suwat513 699 75 10ms 20 Sep 2022 459th ahmetdemirag 🇨🇾 699 75 10ms 6 Mar 2025 459th plcc0 699 75 54ms 21 Mar 2025 459th RaBa21 🇭🇺 699 75 118ms 12 Jul 2025 463rd Natanaelel 🇸🇪 697 64 42ms 1 Mar 2022 463rd olivermrose 🇺🇸 697 64 62ms 1 Mar 2022 465th helbling 🇨🇭 697 82 36ms 13 Jun 2024 465th rucin93 🇵🇱 697 82 28ms 23 days ago 467th Shanethegamer 🇺🇸 696 95 142ms 8 Jun 2022 468th Shanethegamer 🇺🇸 695 96 99ms 7 Jun 2022 469th blaztoma 🇱🇹 694 36 74ms 22 Nov 2025 470th SirBogman 🇺🇸 693 108 117ms 23 Nov 2022 471st edsrzf 🇳🇿 691 130 52ms 27 Dec 2024 472nd Indivicivet 690 76 11ms 9 May 2022 472nd QuincyNash 🇺🇸 690 76 11ms 2 Dec 2022 472nd nstearns96 🇬🇧 690 76 31ms 9 Jan 2023 472nd TaserTheFox 🇺🇸 690 76 11ms 16 Feb 2023 472nd cros107 🇦🇺 690 76 11ms 19 Aug 2023 472nd stertooy 🇧🇪 690 76 10ms 15 Jun 2024 472nd hiichbindermax 690 76 11ms 22 Jun 2024 472nd JunkIce 690 76 11ms 24 Nov 2024 472nd Flekay 🇩🇪 690 76 13ms 10 Jul 2025 First Prev 401–480 of 1,537 Next Last