The Calendar hole will go live in approximately 8 days. Why not try and solve it ahead of time?
Prime Numbers in all languages in chars. 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 Chars Time Submitted 560th Steffan153 🇫🇮 916 36 127ms 3 Aug 2024 560th JayXon 🇺🇸 916 36 123ms 4 Aug 2024 560th pardouin 🇫🇷 916 36 123ms 4 Aug 2024 560th lukegustafson 🇺🇸 916 36 128ms 4 Aug 2024 560th Lydxn 🇨🇦 916 36 123ms 6 Aug 2024 566th Lydxn 🇨🇦 916 40 98ms 18 Aug 2021 566th MeWhenI 🇻🇦 916 40 99ms 18 Aug 2021 566th JayXon 🇺🇸 916 40 96ms 18 Aug 2021 569th kg583 🇺🇸 916 53 5ms 8 Oct 2025 570th canissimia 🇦🇶 916 134 1ms 14 Jul 2021 571st MeWhenI 🇻🇦 914 29 5ms 16 Jul 2022 572nd saito-ta 🇯🇵 914 41 3ms 19 May 2023 573rd Lydxn 🇨🇦 914 42 69ms 15 May 2022 573rd GrayJoKing 🇦🇺 914 42 70ms 16 May 2022 573rd Steffan153 🇫🇮 914 42 73ms 10 Dec 2022 573rd JayXon 🇺🇸 914 42 70ms 20 Mar 2023 573rd Yewzir 🇧🇪 914 42 73ms 9 Nov 2023 573rd Betuaredead 914 42 72ms 13 Nov 2023 573rd Lydxn 🇨🇦 914 42 5ms 20 Dec 2023 573rd Steffan153 🇫🇮 914 42 5ms 9 Aug 2024 573rd pardouin 🇫🇷 914 42 72ms 3 Sep 2024 573rd DialFrost 🇸🇬 914 42 66ms 14 Nov 2024 573rd sean-niemann 🇺🇸 914 42 71ms 18 Apr 2025 573rd sean-niemann 🇺🇸 914 42 5ms 19 Apr 2025 573rd albanian-laundromat 914 42 77ms 8 Nov 2025 586th saito-ta 🇯🇵 913 17 36ms 26 Jul 2022 586th clockworknazo 913 17 59ms 9 Aug 2022 588th HPWiz 🇳🇿 913 29 590ms 10 May 2023 588th ovs-code 🇩🇪 913 29 668ms 24 Oct 2023 588th Codsilla 🇨🇦 913 29 611ms 31 Oct 2023 588th DialFrost 🇸🇬 913 29 704ms 5 Jan 2024 588th Steffan153 🇫🇮 913 29 563ms 17 Aug 2024 588th sean-niemann 🇺🇸 913 29 607ms 13 Mar 2025 594th retrohun 913 43 15ms 5 Aug 2018 594th Attero 🇸🇪 913 43 10ms 15 May 2020 594th hashkitten 913 43 15ms 24 Sep 2020 594th urojony 🇵🇱 913 43 9ms 28 Dec 2020 594th 77Tigers 913 43 11ms 4 Mar 2021 594th jacklynnepenick 913 43 11ms 14 Aug 2021 594th annaproxy 913 43 9ms 7 Dec 2021 594th emplv 🇱🇻 913 43 9ms 14 Dec 2021 594th bob-th 913 43 9ms 5 Aug 2022 594th galloj 🇨🇿 913 43 9ms 29 Aug 2022 594th MichalMarsalek 🇨🇿 913 43 9ms 14 Jan 2023 594th zbreit 🇺🇸 913 43 9ms 28 May 2023 594th heypwesto 🇳🇿 913 43 8ms 31 May 2023 594th kaptsanovb 913 43 9ms 8 Jun 2023 594th kellantech 913 43 9ms 13 Jun 2023 594th Natanaelel 🇸🇪 913 43 9ms 8 Sep 2023 594th FieryIceStickie 913 43 9ms 27 Nov 2023 594th Bulmenisaurus 913 43 15ms 4 Jun 2024 594th ahmetdemirag 🇨🇾 913 43 11ms 9 Jun 2024 594th thatbirdguythatuknownot 913 43 15ms 24 Aug 2024 594th Stockoh 🇫🇷 913 43 11ms 17 Nov 2024 594th snydej 913 43 9ms 21 Nov 2024 594th randolchance 913 43 10ms 19 Oct 2025 617th sisyphus-ppcg 🇦🇺 913 66 1ms 7 Jul 2022 617th m-tkach 🇺🇦 913 66 1ms 8 Mar 2023 617th orthoplex 🇨🇽 913 66 1ms 29 Jun 2023 617th UnderKoen 🇳🇱 913 66 1ms 21 May 2025 621st inventshah 912 47 2ms 9 Sep 2022 621st Lydxn 🇨🇦 912 47 2ms 9 Sep 2022 621st sisyphus-ppcg 🇦🇺 912 47 2ms 10 Sep 2022 621st JayXon 🇺🇸 912 47 2ms 10 Sep 2022 621st GrayJoKing 🇦🇺 912 47 2ms 11 Sep 2022 621st btnlq 912 47 2ms 11 Sep 2022 621st Steffan153 🇫🇮 912 47 2ms 25 Mar 2023 621st m-tkach 🇺🇦 912 47 2ms 31 Jan 2024 621st sean-niemann 🇺🇸 912 47 2ms 1 Jan 2025 621st albanian-laundromat 912 47 2ms 7 Jun 2025 621st fuzzylojik-golf 🇺🇸 912 47 2ms 18 Jul 2025 621st snoozingnewt 🇨🇦 912 47 2ms 10 days ago 633rd marshallward 🇺🇸 912 49 41ms 29 Jun 2022 634th Lydxn 🇨🇦 912 54 99ms 14 Oct 2022 634th JayXon 🇺🇸 912 54 98ms 13 Jun 2023 636th Yewzir 🇧🇪 912 63 119ms 17 Feb 2024 636th elgan65536 912 63 114ms 4 Apr 2024 636th DialFrost 🇸🇬 912 63 118ms 11 Apr 2025 639th pardouin 🇫🇷 910 41 4,033ms 31 Oct 2024 639th btnlq 910 41 3,895ms 31 Oct 2024 First Prev 561–640 of 5,318 Next Last