The Calendar hole will go live in approximately 3 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 638th AlephSquirrel 916 35 3ms 20 Apr 2023 638th primo-ppcg 🇹🇭 916 35 4ms 27 Apr 2023 638th MeWhenI 🇻🇦 916 35 3ms 23 May 2023 638th GrayJoKing 🇦🇺 916 35 4ms 15 Aug 2023 638th btnlq 916 35 3ms 21 Oct 2023 638th Yewzir 🇧🇪 916 35 4ms 28 Oct 2023 638th Betuaredead 916 35 4ms 12 Nov 2023 638th edsrzf 🇳🇿 916 35 4ms 1 Nov 2024 638th emgordon154 916 35 3ms 22 Dec 2024 638th sean-niemann 🇺🇸 916 35 4ms 26 Apr 2025 638th kg583 🇺🇸 916 35 4ms 25 Sep 2025 652nd primo-ppcg 🇹🇭 916 48 1,299ms 28 May 2021 652nd Lydxn 🇨🇦 916 48 1,290ms 25 Oct 2021 654th kg583 🇺🇸 916 53 5ms 8 Oct 2025 655th nwellnhof 🇩🇪 916 64 314ms 21 Dec 2021 655th btnlq 916 64 341ms 10 Mar 2023 655th MeWhenI 🇻🇦 916 64 338ms 26 Jul 2023 655th sean-niemann 🇺🇸 916 64 357ms 23 Dec 2024 655th WalrusesAreAwesome 916 64 378ms 11 Jan 2025 655th prplz 🇦🇺 916 64 343ms 23 Jan 2025 655th Yax42 🇫🇷 916 64 350ms 1 Aug 2025 655th KasperKivimaeki 🇫🇮 916 64 352ms 6 days ago 663rd canissimia 🇦🇶 916 134 1ms 14 Jul 2021 664th saito-ta 🇯🇵 914 41 3ms 19 May 2023 665th Lydxn 🇨🇦 914 42 69ms 15 May 2022 665th GrayJoKing 🇦🇺 914 42 70ms 16 May 2022 665th Steffan153 🇫🇮 914 42 73ms 10 Dec 2022 665th JayXon 🇺🇸 914 42 70ms 20 Mar 2023 665th Yewzir 🇧🇪 914 42 73ms 9 Nov 2023 665th Betuaredead 914 42 72ms 13 Nov 2023 665th pardouin 🇫🇷 914 42 72ms 3 Sep 2024 665th DialFrost 🇸🇬 914 42 66ms 14 Nov 2024 665th sean-niemann 🇺🇸 914 42 71ms 18 Apr 2025 665th albanian-laundromat 914 42 77ms 8 Nov 2025 675th MeWhenI 🇻🇦 913 30 4ms 16 Jul 2022 676th HPWiz 🇳🇿 913 31 518ms 10 May 2023 676th ovs-code 🇩🇪 913 31 542ms 24 Oct 2023 676th Codsilla 🇨🇦 913 31 510ms 31 Oct 2023 676th DialFrost 🇸🇬 913 31 614ms 5 Jan 2024 676th Steffan153 🇫🇮 913 31 516ms 17 Aug 2024 676th sean-niemann 🇺🇸 913 31 495ms 13 Mar 2025 682nd sean-niemann 🇺🇸 913 39 119ms 3 Aug 2024 682nd Steffan153 🇫🇮 913 39 117ms 3 Aug 2024 682nd rucin93 🇵🇱 913 39 122ms 3 Aug 2024 682nd GrayJoKing 🇦🇺 913 39 124ms 3 Aug 2024 682nd DialFrost 🇸🇬 913 39 121ms 3 Aug 2024 682nd Argeento 🇵🇱 913 39 120ms 3 Aug 2024 682nd JayXon 🇺🇸 913 39 122ms 4 Aug 2024 682nd pardouin 🇫🇷 913 39 119ms 4 Aug 2024 682nd lukegustafson 🇺🇸 913 39 125ms 4 Aug 2024 682nd Lydxn 🇨🇦 913 39 124ms 5 Aug 2024 682nd emplv 🇱🇻 913 39 128ms 29 Oct 2024 682nd ovs-code 🇩🇪 913 39 122ms 5 Jan 2025 682nd fuzzylojik-golf 🇺🇸 913 39 118ms 15 Jul 2025 682nd albanian-laundromat 913 39 126ms 2 Oct 2025 682nd snoozingnewt 🇨🇦 913 39 120ms 18 days ago 697th AdrienHache 🇫🇷 913 40 53ms 17 Oct 2024 698th retrohun 913 43 15ms 5 Aug 2018 698th Attero 🇸🇪 913 43 10ms 15 May 2020 698th hashkitten 913 43 15ms 24 Sep 2020 698th urojony 🇵🇱 913 43 9ms 28 Dec 2020 698th 77Tigers 913 43 11ms 4 Mar 2021 698th jacklynnepenick 913 43 11ms 14 Aug 2021 698th annaproxy 913 43 9ms 7 Dec 2021 698th emplv 🇱🇻 913 43 9ms 14 Dec 2021 698th bob-th 913 43 9ms 5 Aug 2022 698th galloj 🇨🇿 913 43 9ms 29 Aug 2022 698th MichalMarsalek 🇨🇿 913 43 9ms 14 Jan 2023 698th zbreit 🇺🇸 913 43 9ms 28 May 2023 698th heypwesto 🇳🇿 913 43 8ms 31 May 2023 698th kaptsanovb 913 43 9ms 8 Jun 2023 698th kellantech 913 43 9ms 13 Jun 2023 698th Natanaelel 🇸🇪 913 43 9ms 8 Sep 2023 698th FieryIceStickie 913 43 9ms 27 Nov 2023 698th Bulmenisaurus 913 43 15ms 4 Jun 2024 698th ahmetdemirag 🇨🇾 913 43 11ms 9 Jun 2024 698th thatbirdguythatuknownot 913 43 15ms 24 Aug 2024 698th Stockoh 🇫🇷 913 43 11ms 17 Nov 2024 698th snydej 913 43 9ms 21 Nov 2024 698th randolchance 913 43 10ms 19 Oct 2025 First Prev 641–720 of 5,356 Next Last