The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Prime 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 635th GrayJoKing 🇦🇺 916 35 4ms 15 Aug 2023 635th btnlq 916 35 3ms 21 Oct 2023 635th Yewzir 🇧🇪 916 35 4ms 28 Oct 2023 635th Betuaredead 916 35 4ms 12 Nov 2023 635th edsrzf 🇳🇿 916 35 4ms 1 Nov 2024 635th emgordon154 916 35 3ms 22 Dec 2024 635th sean-niemann 🇺🇸 916 35 4ms 26 Apr 2025 635th kg583 🇺🇸 916 35 4ms 25 Sep 2025 649th primo-ppcg 🇹🇭 916 48 1,299ms 28 May 2021 649th Lydxn 🇨🇦 916 48 1,290ms 25 Oct 2021 651st kg583 🇺🇸 916 53 5ms 8 Oct 2025 652nd canissimia 🇦🇶 916 134 1ms 14 Jul 2021 653rd nwellnhof 🇩🇪 915 64 314ms 21 Dec 2021 653rd btnlq 915 64 341ms 10 Mar 2023 653rd MeWhenI 🇻🇦 915 64 338ms 26 Jul 2023 653rd sean-niemann 🇺🇸 915 64 357ms 23 Dec 2024 653rd WalrusesAreAwesome 915 64 378ms 11 Jan 2025 653rd prplz 🇦🇺 915 64 343ms 23 Jan 2025 653rd Yax42 🇫🇷 915 64 415ms 1 Aug 2025 660th saito-ta 🇯🇵 914 41 3ms 19 May 2023 661st Lydxn 🇨🇦 914 42 69ms 15 May 2022 661st GrayJoKing 🇦🇺 914 42 70ms 16 May 2022 661st Steffan153 🇫🇮 914 42 73ms 10 Dec 2022 661st JayXon 🇺🇸 914 42 70ms 20 Mar 2023 661st Yewzir 🇧🇪 914 42 73ms 9 Nov 2023 661st Betuaredead 914 42 72ms 13 Nov 2023 661st pardouin 🇫🇷 914 42 72ms 3 Sep 2024 661st DialFrost 🇸🇬 914 42 66ms 14 Nov 2024 661st sean-niemann 🇺🇸 914 42 71ms 18 Apr 2025 661st albanian-laundromat 914 42 77ms 8 Nov 2025 671st HPWiz 🇳🇿 913 31 590ms 10 May 2023 671st ovs-code 🇩🇪 913 31 668ms 24 Oct 2023 671st Codsilla 🇨🇦 913 31 611ms 31 Oct 2023 671st DialFrost 🇸🇬 913 31 704ms 5 Jan 2024 671st Steffan153 🇫🇮 913 31 563ms 17 Aug 2024 671st sean-niemann 🇺🇸 913 31 607ms 13 Mar 2025 677th sean-niemann 🇺🇸 913 39 119ms 3 Aug 2024 677th Steffan153 🇫🇮 913 39 117ms 3 Aug 2024 677th rucin93 🇵🇱 913 39 122ms 3 Aug 2024 677th GrayJoKing 🇦🇺 913 39 124ms 3 Aug 2024 677th DialFrost 🇸🇬 913 39 121ms 3 Aug 2024 677th Argeento 🇵🇱 913 39 120ms 3 Aug 2024 677th JayXon 🇺🇸 913 39 122ms 4 Aug 2024 677th pardouin 🇫🇷 913 39 119ms 4 Aug 2024 677th lukegustafson 🇺🇸 913 39 125ms 4 Aug 2024 677th Lydxn 🇨🇦 913 39 124ms 5 Aug 2024 677th emplv 🇱🇻 913 39 128ms 29 Oct 2024 677th ovs-code 🇩🇪 913 39 122ms 5 Jan 2025 677th fuzzylojik-golf 🇺🇸 913 39 118ms 15 Jul 2025 677th albanian-laundromat 913 39 126ms 2 Oct 2025 677th snoozingnewt 🇨🇦 913 39 120ms 8 days ago 692nd AdrienHache 🇫🇷 913 40 53ms 17 Oct 2024 693rd retrohun 913 43 15ms 5 Aug 2018 693rd Attero 🇸🇪 913 43 10ms 15 May 2020 693rd hashkitten 913 43 15ms 24 Sep 2020 693rd urojony 🇵🇱 913 43 9ms 28 Dec 2020 693rd 77Tigers 913 43 11ms 4 Mar 2021 693rd jacklynnepenick 913 43 11ms 14 Aug 2021 693rd annaproxy 913 43 9ms 7 Dec 2021 693rd emplv 🇱🇻 913 43 9ms 14 Dec 2021 693rd bob-th 913 43 9ms 5 Aug 2022 693rd galloj 🇨🇿 913 43 9ms 29 Aug 2022 693rd MichalMarsalek 🇨🇿 913 43 9ms 14 Jan 2023 693rd zbreit 🇺🇸 913 43 9ms 28 May 2023 693rd heypwesto 🇳🇿 913 43 8ms 31 May 2023 693rd kaptsanovb 913 43 9ms 8 Jun 2023 693rd kellantech 913 43 9ms 13 Jun 2023 693rd Natanaelel 🇸🇪 913 43 9ms 8 Sep 2023 693rd FieryIceStickie 913 43 9ms 27 Nov 2023 693rd Bulmenisaurus 913 43 15ms 4 Jun 2024 693rd ahmetdemirag 🇨🇾 913 43 11ms 9 Jun 2024 693rd thatbirdguythatuknownot 913 43 15ms 24 Aug 2024 693rd Stockoh 🇫🇷 913 43 11ms 17 Nov 2024 693rd snydej 913 43 9ms 21 Nov 2024 693rd randolchance 913 43 10ms 19 Oct 2025 693rd AdrienHache 🇫🇷 913 43 10ms 28 hours ago 717th sisyphus-ppcg 🇦🇺 913 66 1ms 7 Jul 2022 717th m-tkach 🇺🇦 913 66 1ms 8 Mar 2023 717th orthoplex 🇨🇽 913 66 1ms 29 Jun 2023 717th UnderKoen 🇳🇱 913 66 1ms 21 May 2025 First Prev 641–720 of 5,345 Next Last