Prime Numbers in Ruby 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 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Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator 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 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 62nd OhmNomNom 818 33 31ms 30 Oct 2022 62nd retrohun 818 33 37ms 8 Jan 2023 62nd mnbvczx 🇰🇷 818 33 37ms 12 Mar 2023 62nd AlephSquirrel 818 33 32ms 14 Apr 2023 62nd FortuiteMan 🇫🇷 818 33 36ms 11 Sep 2023 62nd aaronze 🇦🇺 818 33 37ms 21 Sep 2023 62nd FlyingPenguin223 818 33 34ms 16 Nov 2023 62nd ngthanhtrung23 818 33 37ms 15 Mar 2024 62nd LostSyntax21 🇬🇧 818 33 40ms 24 Jul 2025 62nd Matter1024 🇮🇳 818 33 36ms 23 days ago 86th ConorOBrien-Foxx 794 34 37ms 2 Jul 2018 86th acornellier 794 34 37ms 8 Dec 2018 86th Yytsi 794 34 36ms 14 Mar 2019 86th Marin-Kitagawa 794 34 36ms 18 Jul 2021 86th pandapawskat 794 34 36ms 7 Oct 2021 86th DaCuteRaccoon 794 34 38ms 16 Apr 2022 86th ls-samer-abuthaher 794 34 36ms 2 Dec 2022 86th annaproxy 794 34 37ms 15 Sep 2023 86th Babafaba 794 34 32ms 15 Oct 2025 95th Haksell 🇦🇶 771 35 34ms 6 Apr 2020 95th daninnm 771 35 36ms 23 Jul 2021 95th shellbertt 🇨🇦 771 35 38ms 8 Sep 2021 95th dokutan 771 35 36ms 30 Apr 2024 95th D-MOVE 🇵🇭 771 35 34ms 3 hours ago 100th clupasq 750 36 36ms 3 Feb 2018 100th tadd 750 36 36ms 16 Apr 2020 100th yzhs 🇩🇪 750 36 31ms 26 Jul 2021 103rd j55d 730 37 37ms 4 Dec 2017 103rd Secozzi 730 37 36ms 28 Nov 2019 103rd kinoute 🇫🇷 730 37 36ms 10 Sep 2021 103rd KrausRaus 🇺🇸 730 37 32ms 31 Dec 2021 107th mgergi 711 38 36ms 10 Oct 2018 107th SamirHodzic 711 38 37ms 11 Oct 2018 107th CaAlden 711 38 36ms 9 May 2019 107th reireias 711 38 36ms 30 Jul 2019 107th Mir0ff944 711 38 37ms 4 Apr 2020 107th Gradizer 711 38 36ms 13 Mar 2021 107th typewriter 711 38 36ms 1 Jun 2021 107th JRaspass 🇬🇧 711 38 35ms 21 Apr 2022 115th greghull 692 39 37ms 8 Nov 2017 115th robymus 692 39 35ms 18 Sep 2018 115th purp 692 39 36ms 13 Aug 2022 115th aydamak 692 39 34ms 15 May 2024 119th ndren 675 40 36ms 2 Aug 2023 119th BREMAUCY 🇫🇷 675 40 32ms 18 Mar 2024 119th Andriamanitra 🇫🇮 675 40 33ms 25 Feb 2025 122nd Boostik 659 41 36ms 8 Jan 2018 122nd ajc2 659 41 37ms 1 May 2018 122nd segiddins 659 41 37ms 24 Aug 2018 122nd giruzou 659 41 36ms 24 Mar 2019 122nd 0xddom 659 41 38ms 18 Dec 2019 127th nlc 643 42 32ms 18 Dec 2017 127th adoxography 643 42 40ms 10 Oct 2019 129th stevehodges 628 43 36ms 8 Nov 2017 129th graft 628 43 32ms 10 Mar 2018 129th SephQ 628 43 37ms 7 Feb 2021 132nd ndimov 614 44 38ms 13 Oct 2017 132nd mogron 614 44 37ms 13 Dec 2019 132nd sapphyrus 614 44 37ms 18 Feb 2020 132nd ninjawarrior1337 614 44 37ms 1 Dec 2021 132nd HallMatthew314 614 44 31ms 5 Dec 2021 132nd mikiymk 614 44 31ms 21 Sep 2023 138th somebody1234 600 45 32ms 20 Jan 2020 138th BrenSchaap 600 45 32ms 13 Nov 2021 140th bbakersmith 587 46 32ms 30 Jul 2021 140th gfund 587 46 38ms 5 Oct 2022 142nd Anonymousellama21 574 47 34ms 18 Feb 2022 143rd dwayneparton 563 48 33ms 7 May 2020 143rd stellartux 563 48 32ms 24 Dec 2023 145th iamsolarpowered 551 49 33ms 15 Dec 2017 145th th1rt3en 551 49 32ms 13 May 2018 145th zstearman3 551 49 37ms 12 Jul 2018 145th atayarani 551 49 36ms 18 Jan 2019 145th HumanoidCPU 551 49 34ms 3 Jul 2024 145th Florian-Mt 551 49 34ms 14 Jul 2024 First Prev 76–150 of 182 Next Last