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 Calendar 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 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 ArkScript 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 ArkScript 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 Calendar 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 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 62nd aaronze 🇦🇺 818 33 43ms 21 Sep 2023 62nd FlyingPenguin223 818 33 37ms 16 Nov 2023 62nd ngthanhtrung23 818 33 42ms 15 Mar 2024 62nd LostSyntax21 🇬🇧 818 33 37ms 24 Jul 2025 62nd Matter1024 🇮🇳 818 33 41ms 15 Nov 2025 86th ConorOBrien-Foxx 794 34 45ms 2 Jul 2018 86th acornellier 794 34 47ms 8 Dec 2018 86th Yytsi 794 34 41ms 14 Mar 2019 86th Marin-Kitagawa 794 34 41ms 18 Jul 2021 86th pandapawskat 794 34 41ms 7 Oct 2021 86th DaCuteRaccoon 794 34 44ms 16 Apr 2022 86th ls-samer-abuthaher 794 34 40ms 2 Dec 2022 86th annaproxy 794 34 42ms 15 Sep 2023 86th Babafaba 794 34 35ms 15 Oct 2025 95th Haksell 🇦🇶 771 35 37ms 6 Apr 2020 95th daninnm 771 35 44ms 23 Jul 2021 95th shellbertt 🇨🇦 771 35 41ms 8 Sep 2021 95th dokutan 771 35 42ms 30 Apr 2024 95th D-MOVE 🇵🇭 771 35 40ms 27 days ago 95th TheZwierzLF 🇵🇱 771 35 38ms 80 mins ago 101st clupasq 750 36 42ms 3 Feb 2018 101st tadd 750 36 42ms 16 Apr 2020 101st yzhs 🇩🇪 750 36 36ms 26 Jul 2021 104th j55d 730 37 39ms 4 Dec 2017 104th Secozzi 730 37 40ms 28 Nov 2019 104th kinoute 🇫🇷 730 37 41ms 10 Sep 2021 104th KrausRaus 🇺🇸 730 37 33ms 31 Dec 2021 108th mgergi 711 38 39ms 10 Oct 2018 108th SamirHodzic 711 38 43ms 11 Oct 2018 108th CaAlden 711 38 43ms 9 May 2019 108th reireias 711 38 41ms 30 Jul 2019 108th Mir0ff944 711 38 38ms 4 Apr 2020 108th Gradizer 711 38 43ms 13 Mar 2021 108th typewriter 711 38 41ms 1 Jun 2021 108th JRaspass 🇬🇧 711 38 42ms 21 Apr 2022 116th greghull 692 39 41ms 8 Nov 2017 116th robymus 692 39 40ms 18 Sep 2018 116th purp 692 39 41ms 13 Aug 2022 116th aydamak 692 39 36ms 15 May 2024 120th ndren 675 40 38ms 2 Aug 2023 120th BREMAUCY 🇫🇷 675 40 36ms 18 Mar 2024 120th Andriamanitra 🇫🇮 675 40 36ms 25 Feb 2025 123rd Boostik 659 41 41ms 8 Jan 2018 123rd ajc2 659 41 42ms 1 May 2018 123rd segiddins 659 41 42ms 24 Aug 2018 123rd giruzou 659 41 43ms 24 Mar 2019 123rd 0xddom 659 41 48ms 18 Dec 2019 128th nlc 643 42 34ms 18 Dec 2017 128th adoxography 643 42 43ms 10 Oct 2019 130th stevehodges 628 43 41ms 8 Nov 2017 130th graft 628 43 36ms 10 Mar 2018 130th SephQ 628 43 42ms 7 Feb 2021 133rd ndimov 614 44 38ms 13 Oct 2017 133rd mogron 614 44 41ms 13 Dec 2019 133rd sapphyrus 614 44 41ms 18 Feb 2020 133rd ninjawarrior1337 614 44 38ms 1 Dec 2021 133rd HallMatthew314 614 44 38ms 5 Dec 2021 133rd mikiymk 614 44 35ms 21 Sep 2023 139th somebody1234 600 45 38ms 20 Jan 2020 139th BrenSchaap 600 45 36ms 13 Nov 2021 141st bbakersmith 587 46 35ms 30 Jul 2021 141st gfund 587 46 43ms 5 Oct 2022 143rd Anonymousellama21 574 47 36ms 18 Feb 2022 144th dwayneparton 563 48 36ms 7 May 2020 144th stellartux 563 48 35ms 24 Dec 2023 146th iamsolarpowered 551 49 36ms 15 Dec 2017 146th th1rt3en 551 49 35ms 13 May 2018 146th zstearman3 551 49 42ms 12 Jul 2018 146th atayarani 551 49 41ms 18 Jan 2019 146th HumanoidCPU 551 49 38ms 3 Jul 2024 146th Florian-Mt 551 49 40ms 14 Jul 2024 152nd domgetter 529 51 43ms 10 Jun 2020 152nd boxjelly 529 51 37ms 11 Feb 2021 154th babcockd 519 52 36ms 19 Dec 2017 154th michaelrychly 519 52 39ms 5 Jun 2019 154th Ralac07 🇦🇺 519 52 35ms 4 Jul 2024 157th FnControlOption 509 53 43ms 21 Aug 2022 158th sacthedev 500 54 42ms 3 Apr 2018 158th omurakazuaki 🇯🇵 500 54 35ms 2 May 2019 158th gutierrezm00 500 54 36ms 7 May 2020 First Prev 81–160 of 183 Next Last