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 561st MeWhenI 🇻🇦 653 85 1,051ms 28 May 2023 562nd scpchicken 🇵🇼 652 70 999ms 1 Mar 2022 563rd BREMAUCY 🇫🇷 652 294 1,854ms 22 Jul 2025 564th jupj 🇫🇮 651 172 283ms 13 Nov 2023 565th MeWhenI 🇻🇦 649 113 4,736ms 24 Oct 2024 566th Trunksistor 🇫🇷 648 81 13ms 20 May 2022 566th RYNO8 648 81 52ms 18 Aug 2022 566th CarsonChr 🇺🇸 648 81 11ms 24 Sep 2022 566th tuffnatty 🇩🇪 648 81 49ms 19 Jul 2023 566th ssbhatt4321 648 81 23ms 14 Oct 2023 566th CutSandstone 648 81 10ms 19 Jul 2024 566th Mikey-Beep 🇬🇧 648 81 53ms 13 Aug 2025 573rd RYNO8 647 134 474ms 18 Aug 2022 574th shinh 646 69 71ms 25 Jun 2022 575th DialFrost 🇸🇬 646 71 55ms 31 Oct 2023 576th DialFrost 🇸🇬 646 139 172ms 3 May 2025 577th Bmrl7 645 107 11ms 11 Feb 2024 578th duckyluuk 🇳🇱 644 104 262ms 6 Feb 2025 579th Natanaelel 🇸🇪 642 89 25ms 23 Jul 2023 579th voytxt 🇨🇿 642 89 11ms 29 Jul 2023 581st ian-h-chamberlain 🇺🇸 641 142 196ms 6 Jul 2022 582nd dokutan 640 78 444ms 23 Feb 2025 583rd bobbysq 640 82 53ms 21 Dec 2022 583rd mbittner20 640 82 11ms 27 May 2023 583rd agreegious 640 82 119ms 16 Mar 2025 586th Awsute 637 99 1,109ms 26 Apr 2022 587th MeWhenI 🇻🇦 636 104 139ms 15 Nov 2022 588th eranws 635 90 23ms 24 Oct 2022 588th two-bad 🇬🇧 635 90 21ms 25 Feb 2024 590th m-tkach 🇺🇦 635 133 267ms 5 May 2025 591st Just4FunCoder 632 83 12ms 26 Nov 2022 592nd edsrzf 🇳🇿 632 134 411ms 5 days ago 593rd rboath 629 74 140ms 17 Dec 2024 594th Alex-x90 🇺🇸 627 108 100ms 14 Oct 2022 595th ansgustjd 627 110 19ms 5 Nov 2025 596th MeWhenI 🇻🇦 626 85 1,862ms 18 Nov 2023 597th Herbert00709 🇵🇱 625 40 95ms 19 Apr 2024 598th OllieBoyne 🇬🇧 624 84 85ms 25 May 2022 598th fredrik-bakke 🇳🇴 624 84 54ms 5 Oct 2022 598th KatieLG 🇬🇧 624 84 55ms 2 Feb 2024 598th Lv0Sys 🇵🇱 624 84 14ms 13 days ago 602nd targrik 624 89 278ms 27 Jul 2025 603rd Ripick 624 106 137ms 13 Aug 2024 604th RYNO8 622 111 4ms 18 Aug 2022 605th uttumuttu 🇫🇮 621 92 18ms 5 Mar 2022 605th coreynash 621 92 17ms 4 Nov 2023 607th Shanethegamer 🇺🇸 620 78 901ms 7 Jun 2022 608th arctouch-cristiannevianna 618 129 320ms 3 Apr 2023 609th MichalMarsalek 🇨🇿 617 85 68ms 1 Mar 2022 609th rak1507 🇬🇧 617 85 11ms 21 May 2022 609th LeeCamp 617 85 90ms 11 Jan 2023 609th 2011-Chan-Ethan 617 85 56ms 19 Jul 2023 609th rucin93 🇵🇱 617 85 169ms 13 Aug 2024 609th Terobero 617 85 10ms 23 Aug 2024 615th weliveinhell 🇭🇹 615 93 21ms 23 Oct 2023 616th janbehrens 🇩🇪 614 80 533ms 4 Mar 2022 617th MeWhenI 🇻🇦 614 122 42ms 14 Oct 2022 618th emgordon154 612 109 22ms 28 Dec 2024 619th GolfingSuccess 🇬🇷 611 236 1,464ms 3 Feb 2025 620th AkashTandon167 610 86 11ms 18 Mar 2022 620th Irratix 🇳🇱 610 86 98ms 23 Apr 2022 620th HumanoidCPU 610 86 55ms 27 May 2024 620th yokasuretsu 610 86 11ms 7 Jan 2025 624th Waffle3z 609 111 95ms 28 Mar 2022 625th alexsave 608 94 22ms 15 Nov 2025 626th plcc0 608 184 263ms 21 Mar 2025 627th 09cf 605 114 15ms 21 Sep 2023 628th janbehrens 🇩🇪 605 185 271ms 22 Jun 2023 629th MeWhenI 🇻🇦 604 76 45ms 16 Apr 2023 630th Shanethegamer 🇺🇸 604 102 104ms 8 Jun 2022 631st msbranicky 603 87 18ms 23 Jul 2023 632nd MeWhenI 🇻🇦 603 318 1,016ms 29 Aug 2023 633rd Shanethegamer 🇺🇸 602 74 60ms 7 Jun 2022 634th Larento 602 95 29ms 10 Oct 2023 635th elgan65536 602 151 164ms 9 Mar 2024 636th j-Ewan 602 186 288ms 11 Mar 2022 637th stefangimmillaro 599 113 100ms 4 Nov 2022 638th neihousaigaai 599 187 281ms 22 Oct 2024 639th guilhem-roy 🇫🇷 596 88 91ms 1 Mar 2022 639th michelebastione 🇮🇹 596 88 83ms 2 Mar 2022 First Prev 561–640 of 1,540 Next Last