The Calendar hole will go live in approximately 13 days. Why not try and solve it ahead of time?
Prime 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 558th emplv 🇱🇻 914 95 335ms 28 Mar 2023 558th kkoenig 914 95 309ms 10 Sep 2025 563rd Protothor 913 40 93ms 7 Jun 2025 564th JayXon 🇺🇸 913 54 1,224ms 18 Apr 2024 564th stefangimmillaro 913 54 190ms 18 Apr 2024 566th janbehrens 🇩🇪 912 47 194ms 6 Dec 2021 566th argusdusty 🇺🇸 912 47 191ms 21 Aug 2022 566th Skwerl23 912 47 196ms 6 Feb 2023 566th NoahBolohan 🇨🇦 912 47 193ms 14 Feb 2023 566th LostSyntax21 🇬🇧 912 47 188ms 24 Jul 2025 566th CheeseCake628 🇳🇴 912 47 124ms 16 Oct 2025 572nd emgordon154 911 38 915ms 10 May 2025 573rd Shanethegamer 🇺🇸 911 44 505ms 16 Jan 2024 573rd AlephSquirrel 911 44 521ms 16 Jan 2024 573rd bizy-coder 911 44 524ms 17 Jan 2024 573rd ridingqwerty 🇺🇸 911 44 552ms 18 Jan 2024 573rd BREMAUCY 🇫🇷 911 44 532ms 25 Jan 2024 573rd snoozingnewt 🇨🇦 911 44 560ms 11 Feb 2024 573rd lynn 911 44 528ms 17 Feb 2024 573rd neel11235813 911 44 519ms 29 Feb 2024 573rd duckyluuk 🇳🇱 911 44 518ms 27 Mar 2024 573rd MeWhenI 🇻🇦 911 44 525ms 24 May 2024 573rd namelessiw 911 44 438ms 9 Aug 2024 573rd JunkIce 911 44 534ms 3 Dec 2024 573rd emgordon154 911 44 501ms 20 Apr 2025 573rd dokutan 911 44 506ms 30 Jun 2025 573rd CornerMercury 🇬🇧 911 44 434ms 12 Oct 2025 573rd Babafaba 911 44 541ms 18 Oct 2025 573rd albanian-laundromat 911 44 514ms 20 days ago 590th Lydxn 🇨🇦 911 54 289ms 10 Sep 2022 590th MeWhenI 🇻🇦 911 54 279ms 10 Sep 2022 590th inventshah 911 54 278ms 10 Sep 2022 590th sisyphus-ppcg 🇦🇺 911 54 288ms 10 Sep 2022 590th JayXon 🇺🇸 911 54 288ms 10 Sep 2022 590th GrayJoKing 🇦🇺 911 54 297ms 11 Sep 2022 590th btnlq 911 54 289ms 11 Sep 2022 590th clockworknazo 911 54 292ms 14 Sep 2022 590th Steffan153 🇫🇮 911 54 288ms 22 Jan 2023 590th msbranicky 911 54 288ms 3 Oct 2023 590th sean-niemann 🇺🇸 911 54 292ms 17 Dec 2023 590th dokutan 911 54 291ms 5 Jul 2024 590th DialFrost 🇸🇬 911 54 299ms 5 Nov 2024 590th albanian-laundromat 911 54 290ms 4 Jul 2025 590th fuzzylojik-golf 🇺🇸 911 54 295ms 18 Jul 2025 590th snoozingnewt 🇨🇦 911 54 299ms 5 Oct 2025 606th Lydxn 🇨🇦 910 46 266ms 22 Jan 2025 607th JayXon 🇺🇸 910 58 148ms 14 Oct 2022 607th Lydxn 🇨🇦 910 58 151ms 14 Oct 2022 607th DialFrost 🇸🇬 910 58 159ms 13 Nov 2025 610th Lydxn 🇨🇦 909 35 1,644ms 6 Feb 2022 610th chubbc 909 35 1,409ms 30 Dec 2024 612th MeWhenI 🇻🇦 908 33 329ms 5 Dec 2021 613th GrayJoKing 🇦🇺 908 43 171ms 4 Aug 2024 614th nwellnhof 🇩🇪 907 31 462ms 6 Dec 2021 614th DialFrost 🇸🇬 907 31 465ms 10 Apr 2025 614th sean-niemann 🇺🇸 907 31 424ms 10 Apr 2025 617th btnlq 907 54 143ms 14 Feb 2022 617th Lydxn 🇨🇦 907 54 142ms 14 Feb 2022 617th JayXon 🇺🇸 907 54 142ms 15 Feb 2022 617th lynn 907 54 142ms 24 May 2022 617th IanUtley 907 54 144ms 30 Oct 2022 617th annaproxy 907 54 143ms 8 Jan 2023 617th GrayJoKing 🇦🇺 907 54 143ms 18 Oct 2023 617th HumanEquivalentUnit 907 54 141ms 24 Oct 2023 617th ovs-code 🇩🇪 907 54 142ms 1 Jul 2024 626th Shanethegamer 🇺🇸 907 60 26ms 18 Dec 2023 626th Steffan153 🇫🇮 907 60 40ms 19 Dec 2023 626th zacjl 907 60 32ms 10 Oct 2024 626th emgordon154 907 60 27ms 10 Dec 2024 626th edsrzf 🇳🇿 907 60 30ms 30 Jan 2025 626th sean-niemann 🇺🇸 907 60 30ms 23 Jun 2025 626th kg583 🇺🇸 907 60 32ms 23 days ago 633rd primo-ppcg 🇹🇭 906 37 151ms 5 Feb 2022 633rd HPWiz 🇳🇿 906 37 107ms 3 May 2022 635th Lydxn 🇨🇦 906 59 179ms 6 Dec 2021 635th GrayJoKing 🇦🇺 906 59 161ms 6 Dec 2021 635th JayXon 🇺🇸 906 59 161ms 22 Dec 2021 635th Ripick 906 59 164ms 29 Jul 2022 635th Steffan153 🇫🇮 906 59 163ms 14 Jan 2023 635th MeWhenI 🇻🇦 906 59 168ms 4 Aug 2023 First Prev 561–640 of 2,954 Next Last