The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Abundant Numbers (Long) 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 400th Lydxn 🇨🇦 910 80 41ms 20 Nov 2022 400th 386asm 🇺🇸 910 80 40ms 16 Apr 2023 400th GrayJoKing 🇦🇺 910 80 42ms 27 Oct 2023 400th Steffan153 🇫🇮 910 80 43ms 2 Aug 2024 400th sean-niemann 🇺🇸 910 80 41ms 15 Jan 2025 400th albanian-laundromat 910 80 44ms 15 days ago 400th DialFrost 🇸🇬 910 80 46ms 3 days ago 408th emplv 🇱🇻 909 59 14ms 22 Nov 2022 409th JayXon 🇺🇸 909 71 94ms 19 Nov 2022 409th Lydxn 🇨🇦 909 71 89ms 20 Nov 2022 409th MeWhenI 🇻🇦 909 71 100ms 20 Aug 2024 412th MeWhenI 🇻🇦 909 72 8ms 31 Dec 2022 412th Shanethegamer 🇺🇸 909 72 9ms 18 Feb 2023 414th primo-ppcg 🇹🇭 908 43 28ms 20 Nov 2022 415th primo-ppcg 🇹🇭 908 47 1,852ms 20 Nov 2022 415th Steffan153 🇫🇮 908 47 4,769ms 9 Aug 2024 417th DialFrost 🇸🇬 908 69 840ms 2 Mar 2025 418th anter69 🇭🇺 907 45 821ms 23 Feb 2023 419th GolfingSuccess 🇬🇷 907 62 560ms 24 Dec 2024 419th MeWhenI 🇻🇦 907 62 556ms 24 Dec 2024 419th duckyluuk 🇳🇱 907 62 561ms 25 Dec 2024 419th GrayJoKing 🇦🇺 907 62 567ms 3 Feb 2025 423rd DialFrost 🇸🇬 907 88 330ms 17 Nov 2025 424th primo-ppcg 🇹🇭 906 68 148ms 20 Nov 2022 424th MichalMarsalek 🇨🇿 906 68 132ms 18 Dec 2022 424th GrayJoKing 🇦🇺 906 68 136ms 14 Jan 2023 427th IanUtley 906 75 39ms 8 Feb 2025 428th revlayle 🇺🇸 905 84 355ms 22 Nov 2022 428th Betuaredead 905 84 373ms 7 Jan 2023 428th arctouch-cristiannevianna 905 84 340ms 9 Jun 2023 428th aliakseikalosha 905 84 345ms 2 Aug 2023 428th rifatx 905 84 341ms 22 Jul 2024 428th mrondon8 905 84 354ms 2 Dec 2024 428th annaproxy 905 84 371ms 11 Apr 2025 428th Re-Adventures 🇮🇳 905 84 372ms 15 Apr 2025 428th janbehrens 🇩🇪 905 84 386ms 17 Apr 2025 437th sisyphus-ppcg 🇦🇺 904 42 128ms 14 Dec 2022 437th Lydxn 🇨🇦 904 42 106ms 15 Dec 2022 437th DialFrost 🇸🇬 904 42 98ms 2 Jul 2025 437th sean-niemann 🇺🇸 904 42 104ms 3 Jul 2025 441st GrayJoKing 🇦🇺 904 67 43ms 19 Nov 2022 441st MeWhenI 🇻🇦 904 67 22ms 22 Nov 2022 441st Steffan153 🇫🇮 904 67 23ms 18 Feb 2023 441st Shanethegamer 🇺🇸 904 67 21ms 5 Oct 2023 441st sean-niemann 🇺🇸 904 67 23ms 7 Jan 2024 446th JayXon 🇺🇸 904 111 276ms 8 Feb 2024 447th Lydxn 🇨🇦 903 61 15ms 9 Oct 2023 447th sean-niemann 🇺🇸 903 61 16ms 18 Nov 2025 447th ovs-code 🇩🇪 903 61 15ms 19 Nov 2025 447th dokutan 903 61 15ms 19 Nov 2025 451st stefangimmillaro 903 66 35ms 19 Nov 2022 451st janbehrens 🇩🇪 903 66 29ms 19 Nov 2022 451st diddily 903 66 30ms 20 Nov 2022 451st SirBogman 🇺🇸 903 66 49ms 20 Nov 2022 451st StefanHabel 🇨🇦 903 66 30ms 20 Nov 2022 451st Alex-x90 🇺🇸 903 66 31ms 20 Nov 2022 451st jakobkordez 🇸🇮 903 66 30ms 20 Nov 2022 451st anter69 🇭🇺 903 66 29ms 21 Nov 2022 451st inverseLorentz 🇦🇺 903 66 29ms 22 Nov 2022 451st QuincyNash 🇺🇸 903 66 29ms 27 Nov 2022 451st OllieBoyne 🇬🇧 903 66 28ms 28 Nov 2022 451st jroscoe5 903 66 31ms 7 Dec 2022 451st Eilonlif 🇮🇱 903 66 29ms 9 Dec 2022 451st 051 🇸🇬 903 66 30ms 15 Dec 2022 451st aksyristos 903 66 29ms 1 Jan 2023 451st jfallon1997 903 66 32ms 3 Jan 2023 451st betaveros 903 66 30ms 7 Jan 2023 451st bob-th 903 66 29ms 24 Jan 2023 451st Ripick 903 66 31ms 1 Feb 2023 451st CatsAreFluffy 903 66 29ms 18 Feb 2023 451st Just4FunCoder 903 66 29ms 23 Mar 2023 451st jhu04 903 66 29ms 26 Apr 2023 451st CedricGebistorf 903 66 29ms 3 May 2023 451st fourth-bit 903 66 30ms 26 Jun 2023 451st bartsowka2000 903 66 30ms 4 Jul 2023 451st 2011-Chan-Ethan 903 66 29ms 5 Jul 2023 451st Alessandro-Balconi 🇮🇹 903 66 29ms 23 Aug 2023 451st cesarm4 903 66 29ms 29 Aug 2023 451st BREMAUCY 🇫🇷 903 66 31ms 12 Oct 2023 451st PeterTillema 🇳🇱 903 66 31ms 20 Oct 2023 First Prev 401–480 of 2,625 Next Last