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 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) 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 Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab 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) 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 Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 77th tatzyr 🇯🇵 711 38 34ms 8 Jan 2025 77th ejini6969 711 38 36ms 13 Jun 2025 77th Thinkr1 711 38 36ms 3 Feb 2026 77th madex 🇩🇪 711 38 37ms 2 hours ago 85th n1LS 692 39 35ms 2 Oct 2019 85th ajc2 692 39 34ms 18 Oct 2019 85th AlephSquirrel 692 39 34ms 7 Mar 2023 85th vluyzvg 692 39 35ms 30 Mar 2023 85th LostSyntax21 🇬🇧 692 39 35ms 23 Aug 2024 85th snoozingnewt 🇨🇦 692 39 36ms 14 Sep 2025 91st aydamak 675 40 36ms 15 May 2024 92nd robymus 659 41 32ms 17 Sep 2018 93rd biinari 643 42 33ms 27 Mar 2018 93rd adoxography 643 42 34ms 22 Jul 2018 93rd jstanley0 643 42 35ms 12 Dec 2020 93rd rucin93 🇵🇱 643 42 35ms 14 May 2025 93rd Babafaba 643 42 35ms 15 Oct 2025 98th ConorOBrien-Foxx 628 43 35ms 10 Apr 2018 98th nlc 628 43 35ms 11 Apr 2018 98th reireias 628 43 33ms 30 Jul 2019 98th handisb 628 43 34ms 14 Sep 2019 98th mogron 628 43 34ms 13 Dec 2019 98th dwayneparton 628 43 36ms 8 May 2020 98th Michaelncallahan 628 43 36ms 8 May 2020 98th aksyristos 628 43 35ms 31 Jan 2023 98th TheZwierzLF 🇵🇱 628 43 35ms 21 Dec 2025 107th snltd 614 44 37ms 14 Aug 2019 107th sapphyrus 614 44 34ms 18 Feb 2020 107th meenie 614 44 35ms 1 Jan 2021 107th Pluviolithic 614 44 32ms 17 Oct 2023 111th tom-lord 600 45 34ms 8 Nov 2017 111th clupasq 600 45 35ms 3 Feb 2018 111th biji1 600 45 34ms 26 Apr 2018 111th atsushiootani 600 45 33ms 7 Aug 2018 111th 0xddom 600 45 34ms 18 Dec 2019 111th tadd 600 45 35ms 16 Apr 2020 111th Secozzi 600 45 34ms 21 Oct 2020 111th Luj8n 600 45 33ms 12 Nov 2021 111th badboj40 600 45 34ms 14 Feb 2023 120th rlue 587 46 33ms 8 Nov 2017 120th basuneko 587 46 33ms 8 Nov 2017 120th JeremyC-za 587 46 36ms 10 Nov 2017 120th Yytsi 587 46 33ms 14 Mar 2019 120th TFeld00 🇩🇰 587 46 36ms 6 Jun 2019 120th th0rex 587 46 35ms 10 Jun 2019 120th Mir0ff944 587 46 33ms 23 Oct 2019 120th fynnkroeger 587 46 36ms 17 Oct 2022 128th kobaltz 574 47 38ms 8 Nov 2017 128th stevehodges 574 47 35ms 8 Nov 2017 128th iamsolarpowered 574 47 35ms 15 Dec 2017 128th babcockd 574 47 34ms 19 Dec 2017 128th Mikaeel66 574 47 34ms 10 Nov 2019 128th branch14 574 47 39ms 3 Aug 2020 128th maths22 🇺🇸 574 47 36ms 9 Dec 2020 128th HallMatthew314 574 47 38ms 10 Dec 2021 128th Edjyzod 574 47 35ms 3 Oct 2022 137th jacobsmith 563 48 35ms 15 Feb 2018 137th yokasuretsu 563 48 37ms 18 Apr 2018 137th Marcel-Brouette 563 48 35ms 26 Aug 2018 137th jamespeilunli 563 48 35ms 1 May 2022 141st alexkurowski 551 49 34ms 8 Nov 2017 141st Boostik 551 49 33ms 7 Jan 2018 141st chris-arsenault 551 49 35ms 2 Feb 2018 141st caerbannogwhite 551 49 35ms 13 Apr 2018 141st jetpks 551 49 36ms 27 Jun 2019 141st boxjelly 551 49 33ms 12 Feb 2021 141st RustemB 🇷🇺 551 49 33ms 4 May 2021 141st schachmattmatt 551 49 36ms 11 Aug 2021 149th sstadick 540 50 35ms 24 Jan 2018 149th sacthedev 540 50 36ms 3 Apr 2018 149th tsundokul 540 50 36ms 6 Nov 2018 149th atayarani 540 50 36ms 17 Jan 2019 149th Noxilex 540 50 37ms 20 Mar 2019 149th op-ecoprintq 540 50 36ms 31 Jul 2020 149th eggplants 🇯🇵 540 50 36ms 26 Nov 2020 156th san-nat 529 51 34ms 12 Dec 2020 156th frnco 529 51 35ms 2 Jun 2022 156th Krtecik 529 51 37ms 9 Feb 2024 156th Ralac07 🇦🇺 529 51 36ms 4 Jul 2024 160th flavono123 519 52 35ms 15 Jul 2019 First Prev 81–160 of 188 Next Last