Evil Numbers in Ruby 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 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 Bytes Time Submitted 74th galloj 🇨🇿 711 38 32ms 14 Sep 2022 74th RuyiLi 711 38 31ms 7 Apr 2023 74th tatzyr 🇯🇵 711 38 32ms 8 Jan 2025 74th ejini6969 711 38 32ms 13 Jun 2025 80th n1LS 692 39 32ms 2 Oct 2019 80th ajc2 692 39 33ms 18 Oct 2019 80th AlephSquirrel 692 39 32ms 7 Mar 2023 80th vluyzvg 692 39 32ms 30 Mar 2023 80th LostSyntax21 🇬🇧 692 39 32ms 23 Aug 2024 80th snoozingnewt 🇨🇦 692 39 32ms 14 Sep 2025 86th aydamak 675 40 33ms 15 May 2024 87th robymus 659 41 32ms 17 Sep 2018 88th biinari 643 42 34ms 27 Mar 2018 88th adoxography 643 42 34ms 22 Jul 2018 88th jstanley0 643 42 31ms 12 Dec 2020 88th rucin93 🇵🇱 643 42 32ms 14 May 2025 88th Babafaba 643 42 36ms 15 Oct 2025 93rd ConorOBrien-Foxx 628 43 31ms 10 Apr 2018 93rd nlc 628 43 31ms 11 Apr 2018 93rd reireias 628 43 31ms 30 Jul 2019 93rd handisb 628 43 32ms 14 Sep 2019 93rd mogron 628 43 32ms 13 Dec 2019 93rd dwayneparton 628 43 32ms 8 May 2020 93rd Michaelncallahan 628 43 35ms 8 May 2020 93rd aksyristos 628 43 34ms 31 Jan 2023 101st snltd 614 44 31ms 14 Aug 2019 101st sapphyrus 614 44 32ms 18 Feb 2020 101st meenie 614 44 32ms 1 Jan 2021 101st Pluviolithic 614 44 32ms 17 Oct 2023 105th tom-lord 600 45 31ms 8 Nov 2017 105th clupasq 600 45 32ms 3 Feb 2018 105th biji1 600 45 33ms 26 Apr 2018 105th atsushiootani 600 45 33ms 7 Aug 2018 105th 0xddom 600 45 33ms 18 Dec 2019 105th tadd 600 45 32ms 16 Apr 2020 105th Secozzi 600 45 31ms 21 Oct 2020 105th Luj8n 600 45 31ms 12 Nov 2021 105th badboj40 600 45 34ms 14 Feb 2023 114th rlue 587 46 31ms 8 Nov 2017 114th basuneko 587 46 33ms 8 Nov 2017 114th JeremyC-za 587 46 32ms 10 Nov 2017 114th Yytsi 587 46 33ms 14 Mar 2019 114th TFeld00 🇩🇰 587 46 32ms 6 Jun 2019 114th th0rex 587 46 32ms 10 Jun 2019 114th Mir0ff944 587 46 32ms 23 Oct 2019 114th fynnkroeger 587 46 33ms 17 Oct 2022 122nd kobaltz 574 47 32ms 8 Nov 2017 122nd stevehodges 574 47 31ms 8 Nov 2017 122nd iamsolarpowered 574 47 33ms 15 Dec 2017 122nd babcockd 574 47 34ms 19 Dec 2017 122nd Mikaeel66 574 47 32ms 10 Nov 2019 122nd branch14 574 47 35ms 3 Aug 2020 122nd maths22 🇺🇸 574 47 31ms 9 Dec 2020 122nd HallMatthew314 574 47 33ms 10 Dec 2021 122nd Edjyzod 574 47 32ms 3 Oct 2022 131st jacobsmith 563 48 32ms 15 Feb 2018 131st yokasuretsu 563 48 31ms 18 Apr 2018 131st Marcel-Brouette 563 48 32ms 26 Aug 2018 131st jamespeilunli 563 48 33ms 1 May 2022 135th alexkurowski 551 49 34ms 8 Nov 2017 135th Boostik 551 49 33ms 7 Jan 2018 135th chris-arsenault 551 49 33ms 2 Feb 2018 135th caerbannogwhite 551 49 35ms 13 Apr 2018 135th jetpks 551 49 33ms 27 Jun 2019 135th boxjelly 551 49 35ms 12 Feb 2021 135th RustemB 🇷🇺 551 49 31ms 4 May 2021 135th schachmattmatt 551 49 31ms 11 Aug 2021 135th Thinkr1 551 49 33ms 19 days ago 144th sstadick 540 50 31ms 24 Jan 2018 144th sacthedev 540 50 31ms 3 Apr 2018 144th tsundokul 540 50 32ms 6 Nov 2018 144th atayarani 540 50 33ms 17 Jan 2019 144th Noxilex 540 50 31ms 20 Mar 2019 144th op-ecoprintq 540 50 31ms 31 Jul 2020 144th eggplants 🇯🇵 540 50 33ms 26 Nov 2020 First Prev 76–150 of 183 Next Last