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 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 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) 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 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 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) 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 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 Bytes Time Submitted 76th ejini6969 711 38 34ms 13 Jun 2025 82nd n1LS 692 39 39ms 2 Oct 2019 82nd ajc2 692 39 37ms 18 Oct 2019 82nd AlephSquirrel 692 39 37ms 7 Mar 2023 82nd vluyzvg 692 39 36ms 30 Mar 2023 82nd LostSyntax21 🇬🇧 692 39 42ms 23 Aug 2024 82nd snoozingnewt 🇨🇦 692 39 33ms 14 Sep 2025 88th aydamak 675 40 35ms 15 May 2024 89th robymus 659 41 36ms 17 Sep 2018 90th biinari 643 42 40ms 27 Mar 2018 90th adoxography 643 42 36ms 22 Jul 2018 90th jstanley0 643 42 39ms 12 Dec 2020 90th rucin93 🇵🇱 643 42 40ms 14 May 2025 90th Babafaba 643 42 36ms 15 Oct 2025 95th ConorOBrien-Foxx 628 43 38ms 10 Apr 2018 95th nlc 628 43 34ms 11 Apr 2018 95th reireias 628 43 35ms 30 Jul 2019 95th handisb 628 43 36ms 14 Sep 2019 95th mogron 628 43 36ms 13 Dec 2019 95th dwayneparton 628 43 38ms 8 May 2020 95th Michaelncallahan 628 43 37ms 8 May 2020 95th aksyristos 628 43 40ms 31 Jan 2023 95th TheZwierzLF 🇵🇱 628 43 36ms 21 Dec 2025 104th snltd 614 44 34ms 14 Aug 2019 104th sapphyrus 614 44 37ms 18 Feb 2020 104th meenie 614 44 35ms 1 Jan 2021 104th Pluviolithic 614 44 34ms 17 Oct 2023 108th tom-lord 600 45 37ms 8 Nov 2017 108th clupasq 600 45 37ms 3 Feb 2018 108th biji1 600 45 42ms 26 Apr 2018 108th atsushiootani 600 45 35ms 7 Aug 2018 108th 0xddom 600 45 43ms 18 Dec 2019 108th tadd 600 45 37ms 16 Apr 2020 108th Secozzi 600 45 37ms 21 Oct 2020 108th Luj8n 600 45 38ms 12 Nov 2021 108th badboj40 600 45 36ms 14 Feb 2023 117th rlue 587 46 36ms 8 Nov 2017 117th basuneko 587 46 36ms 8 Nov 2017 117th JeremyC-za 587 46 39ms 10 Nov 2017 117th Yytsi 587 46 39ms 14 Mar 2019 117th TFeld00 🇩🇰 587 46 36ms 6 Jun 2019 117th th0rex 587 46 37ms 10 Jun 2019 117th Mir0ff944 587 46 36ms 23 Oct 2019 117th fynnkroeger 587 46 37ms 17 Oct 2022 125th kobaltz 574 47 36ms 8 Nov 2017 125th stevehodges 574 47 37ms 8 Nov 2017 125th iamsolarpowered 574 47 35ms 15 Dec 2017 125th babcockd 574 47 36ms 19 Dec 2017 125th Mikaeel66 574 47 37ms 10 Nov 2019 125th branch14 574 47 40ms 3 Aug 2020 125th maths22 🇺🇸 574 47 35ms 9 Dec 2020 125th HallMatthew314 574 47 35ms 10 Dec 2021 125th Edjyzod 574 47 38ms 3 Oct 2022 134th jacobsmith 563 48 37ms 15 Feb 2018 134th yokasuretsu 563 48 40ms 18 Apr 2018 134th Marcel-Brouette 563 48 38ms 26 Aug 2018 134th jamespeilunli 563 48 37ms 1 May 2022 138th alexkurowski 551 49 42ms 8 Nov 2017 138th Boostik 551 49 40ms 7 Jan 2018 138th chris-arsenault 551 49 36ms 2 Feb 2018 138th caerbannogwhite 551 49 38ms 13 Apr 2018 138th jetpks 551 49 36ms 27 Jun 2019 138th boxjelly 551 49 40ms 12 Feb 2021 138th RustemB 🇷🇺 551 49 37ms 4 May 2021 138th schachmattmatt 551 49 34ms 11 Aug 2021 138th Thinkr1 551 49 36ms 19 Nov 2025 147th sstadick 540 50 36ms 24 Jan 2018 147th sacthedev 540 50 37ms 3 Apr 2018 147th tsundokul 540 50 36ms 6 Nov 2018 147th atayarani 540 50 43ms 17 Jan 2019 147th Noxilex 540 50 36ms 20 Mar 2019 147th op-ecoprintq 540 50 35ms 31 Jul 2020 147th eggplants 🇯🇵 540 50 38ms 26 Nov 2020 154th san-nat 529 51 37ms 12 Dec 2020 154th frnco 529 51 36ms 2 Jun 2022 154th Krtecik 529 51 37ms 9 Feb 2024 154th Ralac07 🇦🇺 529 51 36ms 4 Jul 2024 158th flavono123 519 52 40ms 15 Jul 2019 158th pandapawskat 519 52 34ms 7 Oct 2021 160th sqlreader 509 53 35ms 28 Nov 2020 First Prev 81–160 of 186 Next Last