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 870th Re-Adventures 🇮🇳 884 65 119ms 15 Jul 2023 870th The3gs 884 65 132ms 18 Aug 2023 870th msbranicky 884 65 148ms 1 Oct 2023 870th sean-niemann 🇺🇸 884 65 122ms 24 Oct 2023 870th okaponta 884 65 120ms 11 Jan 2024 870th Creative0708 🇨🇦 884 65 125ms 17 Feb 2024 870th MeWhenI 🇻🇦 884 65 123ms 31 Mar 2024 870th Aurel300 🇨🇭 884 65 128ms 5 Jun 2024 870th dokutan 884 65 133ms 26 Jul 2024 870th wuzekai518 884 65 128ms 5 Aug 2024 870th snoozingnewt 🇨🇦 884 65 124ms 29 Sep 2025 870th namelessiw 884 65 124ms 11 Nov 2025 870th luuumine 🇫🇷 884 65 124ms 19 Nov 2025 894th sisyphus-ppcg 🇦🇺 883 52 2ms 9 Oct 2023 894th Lydxn 🇨🇦 883 52 1ms 9 Oct 2023 894th Steffan153 🇫🇮 883 52 1ms 29 Jan 2024 894th MeWhenI 🇻🇦 883 52 1ms 18 Aug 2024 894th DialFrost 🇸🇬 883 52 1ms 19 Nov 2025 899th kg583 🇺🇸 883 57 37ms 14 Feb 2025 900th primo-ppcg 🇹🇭 882 55 5ms 30 Jan 2022 900th Lydxn 🇨🇦 882 55 5ms 30 Jan 2022 900th AlephSquirrel 882 55 5ms 10 Oct 2024 903rd edsrzf 🇳🇿 881 71 427ms 24 Sep 2025 903rd b-illy 🇬🇧 881 71 437ms 24 Sep 2025 903rd voytxt 🇨🇿 881 71 495ms 25 Sep 2025 903rd stefangimmillaro 881 71 443ms 6 Oct 2025 903rd h3ra993huskp 🇯🇵 881 71 605ms 22 days ago 903rd ScottHamper 881 71 444ms 22 days ago 909th primo-ppcg 🇹🇭 878 91 274ms 21 Apr 2020 909th prplz 🇦🇺 878 91 271ms 24 Apr 2020 909th stefangimmillaro 878 91 278ms 21 Aug 2023 912th Shanethegamer 🇺🇸 878 111 9ms 1 Aug 2023 912th Lydxn 🇨🇦 878 111 9ms 1 Aug 2023 912th MeWhenI 🇻🇦 878 111 9ms 1 Aug 2023 912th JayXon 🇺🇸 878 111 10ms 2 Aug 2023 912th Steffan153 🇫🇮 878 111 9ms 2 Aug 2023 912th janbehrens 🇩🇪 878 111 10ms 2 Aug 2023 912th GrayJoKing 🇦🇺 878 111 10ms 11 Aug 2023 912th BREMAUCY 🇫🇷 878 111 9ms 7 Sep 2023 912th Attero 🇸🇪 878 111 10ms 20 Sep 2023 912th lynn 878 111 9ms 17 Oct 2023 912th dokutan 878 111 9ms 26 Oct 2023 912th Yewzir 🇧🇪 878 111 9ms 12 Mar 2024 912th rucin93 🇵🇱 878 111 11ms 10 May 2024 912th HumanoidCPU 878 111 10ms 18 May 2024 912th KatieLG 🇬🇧 878 111 10ms 8 Jul 2024 912th pardouin 🇫🇷 878 111 9ms 20 Aug 2024 912th GolfingSuccess 🇬🇷 878 111 10ms 31 Aug 2024 912th emgordon154 878 111 9ms 4 Dec 2024 912th CaedenHarper 🇨🇦 878 111 9ms 24 Jan 2025 912th albanian-laundromat 878 111 10ms 20 Jul 2025 912th Babafaba 878 111 10ms 24 Oct 2025 912th snoozingnewt 🇨🇦 878 111 10ms 17 days ago 934th scpchicken 🇵🇼 876 21 124ms 10 Mar 2022 935th cure-honey 🇯🇵 876 51 40ms 15 Jul 2021 935th Lydxn 🇨🇦 876 51 40ms 15 Jul 2021 937th Lydxn 🇨🇦 876 94 1,875ms 22 Apr 2024 937th JayXon 🇺🇸 876 94 1,733ms 22 Apr 2024 939th darryletc 875 40 9ms 8 Jan 2019 939th janlelis 875 40 9ms 10 Feb 2021 939th 051 🇸🇬 875 40 9ms 19 Aug 2022 939th nstearns96 🇬🇧 875 40 9ms 28 Nov 2022 939th NickTheEASDude 🇺🇸 875 40 9ms 11 Apr 2024 939th LordSir101 875 40 9ms 11 Aug 2025 945th sisyphus-ppcg 🇦🇺 875 41 2ms 4 Nov 2022 946th prplz 🇦🇺 875 56 2ms 2 Jan 2022 946th Irratix 🇳🇱 875 56 1ms 13 Jun 2022 946th roupiq 🇵🇱 875 56 2ms 14 Apr 2024 946th sean-niemann 🇺🇸 875 56 1ms 25 Feb 2025 946th DialFrost 🇸🇬 875 56 2ms 14 Nov 2025 951st DialFrost 🇸🇬 874 109 443ms 6 Mar 2025 951st MeWhenI 🇻🇦 874 109 460ms 28 Mar 2025 951st emgordon154 874 109 451ms 29 Apr 2025 954th emgordon154 873 61 98ms 25 days ago 954th DialFrost 🇸🇬 873 61 129ms 25 days ago 954th GolfingSuccess 🇬🇷 873 61 101ms 25 days ago 954th edsrzf 🇳🇿 873 61 114ms 24 days ago 954th snoozingnewt 🇨🇦 873 61 127ms 22 days ago 959th btnlq 873 69 1ms 7 Nov 2020 960th PFischbeck 872 45 15ms 30 Jan 2018 First Prev 881–960 of 5,317 Next Last