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 Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Multitap Input 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) Taxicab Numbers 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers Huffman Encoder NFA Simulator Nim Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily 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 Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Multitap Input 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) Taxicab Numbers 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers Huffman Encoder NFA Simulator Nim Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 99th shellbertt 🇨🇦 771 35 45ms 8 Sep 2021 99th dokutan 771 35 46ms 30 Apr 2024 99th TheZwierzLF 🇵🇱 771 35 46ms 5 Jan 2026 104th clupasq 750 36 47ms 3 Feb 2018 104th tadd 750 36 46ms 16 Apr 2020 104th yzhs 🇩🇪 750 36 37ms 26 Jul 2021 107th j55d 730 37 44ms 4 Dec 2017 107th Secozzi 730 37 44ms 28 Nov 2019 107th kinoute 🇫🇷 730 37 47ms 10 Sep 2021 107th KrausRaus 🇺🇸 730 37 39ms 31 Dec 2021 111th mgergi 711 38 45ms 10 Oct 2018 111th SamirHodzic 711 38 47ms 11 Oct 2018 111th CaAlden 711 38 46ms 9 May 2019 111th reireias 711 38 45ms 30 Jul 2019 111th Mir0ff944 711 38 45ms 4 Apr 2020 111th Gradizer 711 38 48ms 13 Mar 2021 111th typewriter 711 38 44ms 1 Jun 2021 111th JRaspass 🇬🇧 711 38 45ms 21 Apr 2022 111th madex 🇩🇪 711 38 45ms 26 days ago 120th greghull 692 39 49ms 8 Nov 2017 120th robymus 692 39 46ms 18 Sep 2018 120th purp 692 39 47ms 13 Aug 2022 120th aydamak 692 39 38ms 15 May 2024 124th ndren 675 40 46ms 2 Aug 2023 124th BREMAUCY 🇫🇷 675 40 37ms 18 Mar 2024 124th Andriamanitra 🇫🇮 675 40 41ms 25 Feb 2025 127th Boostik 659 41 45ms 8 Jan 2018 127th ajc2 659 41 45ms 1 May 2018 127th segiddins 659 41 46ms 24 Aug 2018 127th giruzou 659 41 51ms 24 Mar 2019 127th 0xddom 659 41 48ms 18 Dec 2019 132nd nlc 643 42 38ms 18 Dec 2017 132nd adoxography 643 42 45ms 10 Oct 2019 134th stevehodges 628 43 45ms 8 Nov 2017 134th graft 628 43 39ms 10 Mar 2018 134th SephQ 628 43 45ms 7 Feb 2021 137th ndimov 614 44 45ms 13 Oct 2017 137th mogron 614 44 45ms 13 Dec 2019 137th sapphyrus 614 44 44ms 18 Feb 2020 137th ninjawarrior1337 614 44 48ms 1 Dec 2021 137th HallMatthew314 614 44 39ms 5 Dec 2021 137th mikiymk 614 44 39ms 21 Sep 2023 143rd somebody1234 600 45 37ms 20 Jan 2020 143rd BrenSchaap 600 45 39ms 13 Nov 2021 145th bbakersmith 587 46 39ms 30 Jul 2021 145th gfund 587 46 45ms 5 Oct 2022 147th Anonymousellama21 574 47 38ms 18 Feb 2022 148th dwayneparton 563 48 37ms 7 May 2020 148th stellartux 563 48 37ms 24 Dec 2023 150th iamsolarpowered 551 49 39ms 15 Dec 2017 150th th1rt3en 551 49 38ms 13 May 2018 150th zstearman3 551 49 44ms 12 Jul 2018 150th atayarani 551 49 45ms 18 Jan 2019 150th HumanoidCPU 551 49 40ms 3 Jul 2024 150th Florian-Mt 551 49 36ms 14 Jul 2024 156th domgetter 529 51 46ms 10 Jun 2020 156th boxjelly 529 51 41ms 11 Feb 2021 158th babcockd 519 52 39ms 19 Dec 2017 158th michaelrychly 519 52 45ms 5 Jun 2019 158th Ralac07 🇦🇺 519 52 37ms 4 Jul 2024 161st FnControlOption 509 53 50ms 21 Aug 2022 162nd sacthedev 500 54 44ms 3 Apr 2018 162nd omurakazuaki 🇯🇵 500 54 38ms 2 May 2019 162nd gutierrezm00 500 54 38ms 7 May 2020 165th RubenBrocke 491 55 39ms 3 Jul 2019 166th caerbannogwhite 482 56 39ms 12 Apr 2018 166th nif33 482 56 50ms 30 Jul 2022 168th rucin93 🇵🇱 474 57 37ms 31 May 2025 169th hyvyys 458 59 41ms 22 Sep 2020 170th hiracky16 443 61 38ms 15 Dec 2019 171st ze-h 🇺🇸 429 63 45ms 18 May 2022 172nd Ripick 415 65 38ms 17 Mar 2024 173rd yokasuretsu 403 67 38ms 18 Apr 2018 173rd mubix 403 67 46ms 5 Mar 2019 173rd MaxElf999 403 67 40ms 14 Dec 2022 176th bwenstar 380 71 36ms 9 Jul 2025 177th KatieLG-Transpiler 🇬🇧 355 76 39ms 24 Jun 2022 177th Mabeloid 🇳🇴 355 76 36ms 4 Oct 2024 177th madeforlosers 355 76 38ms 8 days ago 180th Noxilex 351 77 42ms 20 Mar 2019 180th RyanRogan 351 77 39ms 15 Apr 2020 182nd tomh1012 338 80 38ms 13 Oct 2020 183rd Onitech 329 82 39ms 14 Nov 2018 184th msbranicky 318 85 37ms 7 Sep 2023 185th StronkCheese 🇺🇸 290 93 37ms 18 Feb 2023 186th san-nat 273 99 40ms 12 Dec 2020 187th mokymok 🇺🇸 270 100 37ms 9 Nov 2021 188th kenberland 250 108 39ms 30 Nov 2018 First Prev 101–188 of 188