The Calendar hole will go live in approximately 13 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 721st j-Ewan 546 96 98ms 4 Mar 2022 721st nullie 546 96 79ms 9 Jun 2022 721st andrewjc2000 546 96 27ms 28 Jul 2025 724th emgordon154 546 205 259ms 18 Jan 2025 725th rifatx 543 147 454ms 16 Jul 2024 726th Bmrl7 541 97 111ms 29 Mar 2024 726th Deedogg 541 97 35ms 9 Sep 2024 726th IsaacAlexBarden 541 97 26ms 13 Feb 2025 726th albanian-laundromat 541 97 3,887ms 11 May 2025 730th albanian-laundromat 541 125 134ms 20 Aug 2025 731st 0xjac 🇨🇭 541 207 264ms 7 Jun 2025 732nd Re-Adventures 🇮🇳 539 106 27ms 1 Feb 2023 733rd hamhub7 539 148 393ms 8 Aug 2022 734th DialFrost 🇸🇬 538 142 491ms 3 May 2025 735th Shanethegamer 🇺🇸 538 167 146ms 27 Sep 2024 736th jacobly0 🇺🇸 538 208 263ms 17 Aug 2023 737th SirFireball3521 537 85 1,093ms 15 Mar 2023 738th sleepyStick 535 98 9ms 11 Mar 2022 738th damoose717 535 98 11ms 24 May 2025 740th rifatx 533 210 268ms 17 Jul 2024 741st Yewzir 🇧🇪 533 278 2,754ms 15 Nov 2025 742nd retrohun 532 100 669ms 1 Mar 2022 743rd snyderek 🇺🇸 532 163 99ms 17 Oct 2024 744th Andrey135296 530 99 192ms 29 Nov 2024 745th Protothor 529 108 10ms 21 Jun 2025 746th MeWhenI 🇻🇦 528 93 556ms 15 Feb 2023 747th edsrzf 🇳🇿 528 212 291ms 8 Nov 2024 748th janbehrens 🇩🇪 527 87 4ms 6 Apr 2022 748th blaztoma 🇱🇹 527 87 35ms 24 days ago 750th ibexq 527 131 11ms 2 May 2023 751st JGDoerrer 526 173 164ms 5 Apr 2022 752nd Fishron 525 100 105ms 18 Jun 2022 752nd vishwathg 525 100 106ms 5 Oct 2023 752nd 4ndyJ 🇬🇧 525 100 205ms 23 Dec 2023 752nd chartung17 525 100 115ms 1 Jan 2024 756th annaproxy 525 152 350ms 28 Mar 2022 757th GolfinK 521 53 35ms 22 Nov 2024 758th janbehrens 🇩🇪 521 153 347ms 3 Mar 2022 759th JRaspass 🇬🇧 521 215 261ms 7 Feb 2024 760th XenThe 🇬🇧 520 110 12ms 6 Jul 2025 761st celiendonze 🇨🇭 519 101 110ms 18 Jul 2023 761st namelessiw 519 101 115ms 13 Jul 2024 761st moustave 519 101 225ms 3 Dec 2024 761st Andre3582 519 101 13ms 8 Oct 2025 765th MeWhenI 🇻🇦 519 147 1,243ms 10 Mar 2022 766th Lv0Sys 🇵🇱 518 86 322ms 11 days ago 767th kmathis22 518 177 438ms 20 Nov 2025 768th kmathis22 518 216 254ms 10 Oct 2025 769th CatsAreFluffy 515 134 15ms 27 Jan 2023 770th janbehrens 🇩🇪 515 157 494ms 24 Mar 2022 771st inverseLorentz 🇦🇺 514 102 12ms 5 May 2023 771st cingulataluke 514 102 46ms 29 Aug 2023 771st wh3n3v3r 🇨🇿 514 102 26ms 12 Nov 2024 771st WillowWispy 514 102 30ms 17 Mar 2025 771st mousetail 🇳🇱 514 102 270ms 26 Sep 2025 771st madeforlosers 514 102 10ms 11 Nov 2025 777th TheZwierzLF 🇵🇱 512 87 2,166ms 47 hours ago 778th JRaspass 🇬🇧 510 90 20ms 22 Sep 2022 779th Bonjour27891 🇻🇳 509 103 40ms 4 Mar 2022 779th AlexanderFair 509 103 742ms 25 Jul 2023 779th CheeseCake628 🇳🇴 509 103 31ms 23 Dec 2023 782nd MeWhenI 🇻🇦 509 131 27ms 6 Aug 2023 783rd jupj 🇫🇮 507 136 13ms 19 Oct 2022 784th MathisBullinger 506 113 48ms 27 Mar 2022 784th emgordon154 506 113 37ms 9 Aug 2024 786th Yewzir 🇧🇪 506 221 272ms 25 Oct 2023 787th akusumoto 🇯🇵 505 180 153ms 30 Mar 2022 788th yzhs 🇩🇪 504 104 12ms 3 Jun 2022 788th eiburns 504 104 33ms 25 Aug 2023 790th msbranicky 503 146 3,837ms 7 Jan 2025 791st MeWhenI 🇻🇦 501 93 119ms 12 Dec 2022 792nd ashtraypettingzoo 🇺🇸 501 126 451ms 12 Feb 2023 793rd twocatsinatrenchcoat 500 105 36ms 29 Mar 2022 793rd yuchuehw 500 105 37ms 28 Jan 2024 793rd xyangst 500 105 39ms 18 Oct 2024 793rd vhoulbreque 🇫🇷 500 105 11ms 11 Feb 2025 797th MeWhenI 🇻🇦 500 170 461ms 12 Dec 2023 798th targrik 497 115 12ms 27 Mar 2025 798th madeforlosers 497 115 17ms 3 Nov 2025 800th namelessiw 495 101 563ms 13 Jul 2024 First Prev 721–800 of 1,539 Next Last