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 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 Bytes Time Submitted 81st n1LS 692 39 34ms 2 Oct 2019 81st ajc2 692 39 37ms 18 Oct 2019 81st AlephSquirrel 692 39 37ms 7 Mar 2023 81st vluyzvg 692 39 38ms 30 Mar 2023 81st LostSyntax21 🇬🇧 692 39 34ms 23 Aug 2024 81st snoozingnewt 🇨🇦 692 39 39ms 14 Sep 2025 87th aydamak 675 40 36ms 15 May 2024 88th robymus 659 41 34ms 17 Sep 2018 89th biinari 643 42 37ms 27 Mar 2018 89th adoxography 643 42 38ms 22 Jul 2018 89th jstanley0 643 42 36ms 12 Dec 2020 89th rucin93 🇵🇱 643 42 34ms 14 May 2025 89th Babafaba 643 42 36ms 15 Oct 2025 94th ConorOBrien-Foxx 628 43 36ms 10 Apr 2018 94th nlc 628 43 34ms 11 Apr 2018 94th reireias 628 43 34ms 30 Jul 2019 94th handisb 628 43 37ms 14 Sep 2019 94th mogron 628 43 36ms 13 Dec 2019 94th dwayneparton 628 43 36ms 8 May 2020 94th Michaelncallahan 628 43 36ms 8 May 2020 94th aksyristos 628 43 40ms 31 Jan 2023 94th TheZwierzLF 🇵🇱 628 43 35ms 10 days ago 103rd snltd 614 44 37ms 14 Aug 2019 103rd sapphyrus 614 44 35ms 18 Feb 2020 103rd meenie 614 44 36ms 1 Jan 2021 103rd Pluviolithic 614 44 35ms 17 Oct 2023 107th tom-lord 600 45 35ms 8 Nov 2017 107th clupasq 600 45 36ms 3 Feb 2018 107th biji1 600 45 36ms 26 Apr 2018 107th atsushiootani 600 45 37ms 7 Aug 2018 107th 0xddom 600 45 39ms 18 Dec 2019 107th tadd 600 45 37ms 16 Apr 2020 107th Secozzi 600 45 35ms 21 Oct 2020 107th Luj8n 600 45 35ms 12 Nov 2021 107th badboj40 600 45 37ms 14 Feb 2023 116th rlue 587 46 33ms 8 Nov 2017 116th basuneko 587 46 37ms 8 Nov 2017 116th JeremyC-za 587 46 38ms 10 Nov 2017 116th Yytsi 587 46 38ms 14 Mar 2019 116th TFeld00 🇩🇰 587 46 38ms 6 Jun 2019 116th th0rex 587 46 41ms 10 Jun 2019 116th Mir0ff944 587 46 36ms 23 Oct 2019 116th fynnkroeger 587 46 35ms 17 Oct 2022 124th kobaltz 574 47 35ms 8 Nov 2017 124th stevehodges 574 47 36ms 8 Nov 2017 124th iamsolarpowered 574 47 35ms 15 Dec 2017 124th babcockd 574 47 39ms 19 Dec 2017 124th Mikaeel66 574 47 36ms 10 Nov 2019 124th branch14 574 47 35ms 3 Aug 2020 124th maths22 🇺🇸 574 47 35ms 9 Dec 2020 124th HallMatthew314 574 47 35ms 10 Dec 2021 124th Edjyzod 574 47 39ms 3 Oct 2022 133rd jacobsmith 563 48 39ms 15 Feb 2018 133rd yokasuretsu 563 48 38ms 18 Apr 2018 133rd Marcel-Brouette 563 48 35ms 26 Aug 2018 133rd jamespeilunli 563 48 38ms 1 May 2022 137th alexkurowski 551 49 38ms 8 Nov 2017 137th Boostik 551 49 39ms 7 Jan 2018 137th chris-arsenault 551 49 37ms 2 Feb 2018 137th caerbannogwhite 551 49 36ms 13 Apr 2018 137th jetpks 551 49 37ms 27 Jun 2019 137th boxjelly 551 49 35ms 12 Feb 2021 137th RustemB 🇷🇺 551 49 37ms 4 May 2021 137th schachmattmatt 551 49 38ms 11 Aug 2021 137th Thinkr1 551 49 33ms 19 Nov 2025 146th sstadick 540 50 37ms 24 Jan 2018 146th sacthedev 540 50 36ms 3 Apr 2018 146th tsundokul 540 50 35ms 6 Nov 2018 146th atayarani 540 50 37ms 17 Jan 2019 146th Noxilex 540 50 34ms 20 Mar 2019 146th op-ecoprintq 540 50 33ms 31 Jul 2020 146th eggplants 🇯🇵 540 50 36ms 26 Nov 2020 153rd san-nat 529 51 36ms 12 Dec 2020 153rd frnco 529 51 37ms 2 Jun 2022 153rd Krtecik 529 51 37ms 9 Feb 2024 153rd Ralac07 🇦🇺 529 51 37ms 4 Jul 2024 157th flavono123 519 52 36ms 15 Jul 2019 157th pandapawskat 519 52 34ms 7 Oct 2021 159th sqlreader 509 53 35ms 28 Nov 2020 159th purp 509 53 35ms 12 Aug 2022 First Prev 81–160 of 185 Next Last